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Serra Comineti CDS, Schlindwein MM, de Oliveira Hoeckel PH. Socio-environmental externalities of sewage waste management. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:174109. [PMID: 38908579 DOI: 10.1016/j.scitotenv.2024.174109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/22/2024] [Accepted: 06/16/2024] [Indexed: 06/24/2024]
Abstract
Conventional sewage management is expensive and inefficient, putting the environment and public health at risk, making access to sewage services difficult for everyone. Reusing sewage waste has agricultural and economic potential, but can contain harmful contaminants if not treated properly. This review is based on the hypothesis that the destination of sewage waste generates environmental and social externalities, which have not yet been widely compared. With the aim of identifying, from the literature, the socio-environmental externalities generated by different sewage waste management approaches, a systematic review of the literature was carried out, including 244 documents, with 50 % of these discussing impacts of conventional treatment and 37 % analyzing the reuse of waste. The main impacts and externalities were evaluated in three situations: untreated sewage, treated sewage, and reused waste. The results indicate that sewage waste has an underutilized economic value and can generate revenue, reduce operational costs and electricity expenses. Six negative externalities generated by conventional sewage treatment were identified: health costs; environmental cleaning; carbon offsetting; damage to tourism; damage to fishing and agriculture; and real estate depreciation. In reuse, there is a risk of two negative externalities: health costs and environmental cleaning, but two positive externalities were also identified: the reduction of phosphate rock mining and the neutralization of carbon credits. The complexity of the transition to sustainable sewage treatment practices is highlighted given the lack of consensus on the safe use of sewage waste, the lack of regulatory standardization, implementation costs and differences in regional parameters, highlighting the need for preliminary experimentation in a multidisciplinary and contextualized approach, considering comparative externalities among the available sewage waste management possibilities.
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Affiliation(s)
- Camila da Silva Serra Comineti
- Federal University of Grande Dourados (UFGD), Rodovia Dourados/Itahum, Km 12, Cidade Universitária, Dourados 79.804-970, Brazil; Federal University of Mato Grosso do Sul (UFMS), Av. Costa e Silva, s/n° | Bairro Universitário, Campo Grande 79.070-900, Brazil.
| | - Madalena Maria Schlindwein
- Federal University of Grande Dourados (UFGD), Rodovia Dourados/Itahum, Km 12, Cidade Universitária, Dourados 79.804-970, Brazil.
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Su M, Fan M, Song T, Yang Y, Chen S, Tu W, Li Z, Li S. Spatio-temporal characteristics and multi-scale risk identification of pollution load based on sensitivity analysis in small watersheds located in Tuojiang River Basin, China. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:803. [PMID: 39120619 DOI: 10.1007/s10661-024-12977-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 08/05/2024] [Indexed: 08/10/2024]
Abstract
High-quality development of water resources supports high-quality socio-economic development. High-quality development connects high-quality life, and clarifying the key management contents of small watersheds plays an important role in building ecologically clean small watersheds and promoting regional production and life. Previous research on pollution loads has focused on examining the impact of various external drivers on pollution loads but still lacks research on the impact of changes in pollution sources themselves on pollution loads. In this study, sensitivity analysis was used to determine the impact of changes from different sources on the total pollution loads, which can recognize the critical pollution sources. We first employed the pollutant discharge coefficient method to quantify non-point source pollution loads in the small watershed in the upstream Tuojiang River basin from 2010 to 2021. Then, combination sensitivity analysis with Getis-Ord Gi* was used to identify the critical sources and their crucial areas at the global, districts (counties), and towns (streets) scales, respectively. The results indicate: (1) The pollution loads of COD, NH3-N, TN, and TP all show a decreasing trend, reducing by 18.3%, 16.2%, 18.6%, and 28.1% from 2010 to 2021, respectively; (2) Livestock and poultry breeding pollution source is the most critical source for majority areas across watershed; (3) High-risk areas are mainly concentrated in Jingyang district and its subordinate towns (streets). There is a trend of low-pollution risk areas transitioning to high-pollution risk areas, with high-risk areas predominantly concentrated in the southeast and exhibiting a noticeable phenomenon of pollution load spilling around. This study can promote other similar small watersheds, holding significant importance for non-point source pollution control in small watersheds.
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Affiliation(s)
- Mingyue Su
- School of Environment and Resources, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Min Fan
- School of Environment and Resources, Southwest University of Science and Technology, Mianyang, 621010, China.
- Tianfu Institute of Research and Innovation, Southwest University of Science and Technology, Chengdu, 610299, China.
| | - Tao Song
- School of Environment and Resources, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Yuankun Yang
- School of Environment and Resources, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Shu Chen
- School of Environment and Resources, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Weiguo Tu
- Sichuan Provincial Academy of Nature Resources Sciences, Sichuan, 610015, China
| | - Zhuo Li
- School of Environment and Resources, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Sen Li
- Sichuan Provincial Academy of Nature Resources Sciences, Sichuan, 610015, China
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Boyacioglu H, Gunacti MC, Barbaros F, Gul A, Gul GO, Ozturk T, Kurnaz ML. Impact of climate change and land cover dynamics on nitrate transport to surface waters. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:270. [PMID: 38358427 DOI: 10.1007/s10661-024-12402-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/29/2024] [Indexed: 02/16/2024]
Abstract
The study investigated the impact of climate and land cover change on water quality. The novel contribution of the study was to investigate the individual and combined impacts of climate and land cover change on water quality with high spatial and temporal resolution in a basin in Turkey. The global circulation model MPI-ESM-MR was dynamically downscaled to 10-km resolution under the RCP8.5 emission scenario. The Soil and Water Assessment Tool (SWAT) was used to model stream flow and nitrate loads. The land cover model outputs that were produced by the Land Change Modeler (LCM) were used for these simulation studies. Results revealed that decreasing precipitation intensity driven by climate change could significantly reduce nitrate transport to surface waters. In the 2075-2100 period, nitrate-nitrogen (NO3-N) loads transported to surface water decreased by more than 75%. Furthermore, the transition predominantly from forestry to pastoral farming systems increased loads by about 6%. The study results indicated that fine-resolution land use and climate data lead to better model performance. Environmental managers can also benefit greatly from the LCM-based forecast of land use changes and the SWAT model's attribution of changes in water quality to land use changes.
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Affiliation(s)
- Hulya Boyacioglu
- Department of Environmental Engineering, Dokuz Eylul University, Izmir, Turkey.
| | - Mert Can Gunacti
- Department of Civil Engineering, Dokuz Eylul University, Izmir, Turkey
| | - Filiz Barbaros
- Department of Civil Engineering, Dokuz Eylul University, Izmir, Turkey
| | - Ali Gul
- Department of Civil Engineering, Dokuz Eylul University, Izmir, Turkey
| | | | - Tugba Ozturk
- Faculty of Engineering and Natural Sciences, Department of Physics, Isik University, Istanbul, Turkey
| | - M Levent Kurnaz
- Center for Climate Change and Policy Studies, Bogazici University, Istanbul, Turkey
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Liu J, Wang M, Pang X, Yan X, Chen X, Tian J. Assessment of the response characteristics of pollution load in Huntai Basin under climate change. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:173. [PMID: 38236442 DOI: 10.1007/s10661-024-12350-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 01/11/2024] [Indexed: 01/19/2024]
Abstract
This study establishes a calibrated SWAT (Soil and Water Assessment Tool) model for the Huntai Basin, driven by SSP126, SSP245, SSP585, and multi-model ensemble (MME) models in CMIP6 (Coupled Model Intercomparison Project-6), to investigate the effects of climate change on hydrological processes and pollution load in the Huntai Basin. The results show that the annual mean temperature and the annual precipitation will gradually increase. The nitrogen and phosphorus pollution loads in the basin exhibit a trend of decreasing-increasing-decreasing. The correlation between the nitrogen-phosphorus pollution load and the hydrological process strengthens with increasing radiative forcing. In the four scenarios, CO2 is a primary driving factor that contributes greatly to nitrogen and phosphorus pollution. The main differences are in the total driving factors, and SSP126 and SSP245 are less than those of other models. The total phosphorus and total nitrogen pollution in different climate models were higher than the average level during the benchmark period, except for ammonia nitrogen pollution, which was lower. The nitrogen and phosphorus pollution in SSP126 and SSP245 modes will reach the maximum in 2040s, and the pollution in other periods will be lower than that in SSP585 and MME scenarios. In the long run, the development state between SSP126 and SSP245 may be better appropriate for the Huntai Basin's future sustainable development. This paper analyzes the occurrence and influencing factors of nitrogen and phosphorus pollution under climate change to provide reference to the protection of water environment under changing environments.
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Affiliation(s)
- Jianwei Liu
- School of Hydraulic Engineering, Dalian University of Technology, Dalian, 116024, China.
| | - Mingwei Wang
- School of Hydraulic Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Xiaoteng Pang
- School of Hydraulic Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Xiaohui Yan
- School of Hydraulic Engineering, Dalian University of Technology, Dalian, 116024, China
- Coal Industry Engineering Research Center of Mining Area Environmental And Disaster Cooperative Monitoring, Anhui University of Science and Technology, Huainan, 232001, China
| | - Xiaoqiang Chen
- School of Hydraulic Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jing Tian
- School of Hydraulic Engineering, Dalian University of Technology, Dalian, 116024, China
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Wang R, Ma Y, Zhao G, Zhou Y, Shehab I, Burton A. Investigating water quality sensitivity to climate variability and its influencing factors in four Lake Erie watersheds. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 325:116449. [PMID: 36252329 DOI: 10.1016/j.jenvman.2022.116449] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 09/21/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Climate change alters weather patterns and hydrological cycle, thus potentially aggravating water quality impairment. However, the direct relationships between climate variability and water quality are complicated by a multitude of hydrological and biochemical mechanisms dominate the process. Thus, little is known regarding how water quality responds to climate variability in the context of changing meteorological conditions and human activities. Here, a longitudinal study was conducted using trend, correlation, and redundancy analyses to explore stream water quality sensitivity to temperature, precipitation, streamflow, and how the sensitivity was affected by watershed climate, land cover percentage, landscape configuration, fertilizer application, and tillage types. Specifically, daily pollutant concentration data of suspended solid (SS), total phosphorus (TP), soluble reactive phosphorus (SRP), total Kjeldahl nitrogen (TKN), nitrate and nitrite (NOx), and chloride (Cl) were used as water quality indicators in four Lake Erie watersheds from 1985 to 2017, during which the average temperature has increased 0.5 °C and the total precipitation has increased 9%. Results show that precipitation and flow were positively associated with SRP, NOx, TKN, TP, and SS, except for SRP and NOx in the urban basin. The rising temperatures led to increasing concentrations of SS, TKN, and TP in the urban basin. SRP and NOx sensitivity to precipitation was higher in the years with more precipitation and higher precipitation seasonality, and the basins with more spatially aggregated cropland. No-tillage and reduced tillage management could decrease both precipitation and temperature sensitivity for most pollutants. As one of the first studies leveraging multiple watershed environmental variables with long-term historical climate and water quality data, this study can assist target land use planning and management policy to mitigate future climate change effects on surface water quality.
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Affiliation(s)
- Runzi Wang
- School for Environment and Sustainability, University of Michigan, 440 Church Street, Ann Arbor, MI, 48109-1041, USA.
| | - Yueying Ma
- Community and Regional Planning Program, School of Architecture, The University of Texas at Austin, 310 Inner Campus Drive B7500, Austin, TX, 78712, USA.
| | - Gang Zhao
- Department of Global Ecology, Carnegie Institution for Science, Stanford, 260 Panama St, Stanford, CA, 94305, USA.
| | - Yuhan Zhou
- School for Environment and Sustainability, University of Michigan, 440 Church Street, Ann Arbor, MI, 48109-1041, USA.
| | - Isabella Shehab
- School for Environment and Sustainability, University of Michigan, 440 Church Street, Ann Arbor, MI, 48109-1041, USA.
| | - Allen Burton
- School for Environment and Sustainability, University of Michigan, 440 Church Street, Ann Arbor, MI, 48109-1041, USA.
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Bi F, Zhou H, Zhu M, Wang W. Economic benefit evaluation of water resources allocation in transboundary basins based on particle swarm optimization algorithm and cooperative game model-A case study of Lancang-Mekong River Basin. PLoS One 2022; 17:e0265350. [PMID: 35853085 PMCID: PMC9295979 DOI: 10.1371/journal.pone.0265350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 02/28/2022] [Indexed: 11/24/2022] Open
Abstract
The present work aims to find the optimal solution of Nash Equilibrium (NE) in the traditional Game Theory (GT) applied to water resources allocation. Innovatively, this paper introduces Particle Swarm Optimization (PSO) into GT to propose a cooperative game model to solve the NE problem. Firstly, the basic theory of the PSO algorithm and cooperative game model is described. Secondly, the PSO-based cooperative game model is explained. Finally, the PSO-based cooperative game model is compared with the Genetic Algorithm (GA) to test the performance. Besides taking the countries in Lancang Mekong River Basin as the research object, this paper discusses each country's water consumption and economic benefits under different cooperation patterns. Then, a series of improvement measures and suggestions are put forward accordingly. The results show that the average server occupancy time of the PSO-based cooperative game model is 78.46% lower than that of GA, and the average waiting time is 79.24% lower than that of the GA. Thus, the model reported here has higher computational efficiency and excellent performance than the GA and is more suitable for the current study. In addition, the multi-country cooperation mode can obtain more economic benefits than the independent water resource development mode. This model can quickly find the optimal combination of 16 cooperation modes and has guiding significance for maximizing the benefits of cross-border water Resource Utilization. This research can provide necessary technical support to solve the possible contradictions and conflicts between cross-border river basin countries and build harmonious international relations.
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Affiliation(s)
- Fei Bi
- School of Business, Hohai University, Nanjing, China
| | - Haiwei Zhou
- School of Business, Hohai University, Nanjing, China
- International River Research Centre, Hohai University, Nanjing, China
| | - Min Zhu
- School of Economics & Management, The Open University of China, Beijing, China
| | - Weiwei Wang
- School of Business, Hohai University, Nanjing, China
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Wang L, Zeng X, Yu H. Association between Lake Sediment Nutrients and Climate Change, Human Activities: A Time-Series Analysis. ENVIRONMENTAL MANAGEMENT 2022; 70:117-133. [PMID: 35318516 DOI: 10.1007/s00267-022-01599-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 01/16/2022] [Indexed: 06/14/2023]
Abstract
Climate change and human activities are closely linked with the nutrient accumulation in sediments, but the role of influence factors and the driving mechanisms are unclear. Here, by using the generalized additive model (GAM), we investigated the contributions and driving mechanisms of climate change and human activities on TON, TN, and TP accumulation in sediments of typical lakes in the Huai River basin (Nansi Lake and Hongze Lake) from 1988 to 2018. The impacts of factors, such as air temperature (AT), real GDP per capita (GDP), population density (PD), crop sown area (CSA), artificial impervious area (AIA), and domestic sewage discharge (DSD) were considered in this study. The results of the multivariate GAM showed that the sediment variables were significantly affected by climate change in Nansi Lake, but not in Hongze Lake. AT and DSD contributed the most to the variation of sediment TOC in Nansi Lake, while the most critical factors affecting TN and TP were AT, PD and DSD. PD and CSA showed strong ability to explain the change of TOC in Hongze Lake, while CSA and DSD showed strong ability to explain the variations of TN and TP. The results show that the selected optimal multivariate GAM can well quantify the effects of climate change and human activities on nutrient enrichment in lake sediments. Effective recommendations are provided for decision-makers in developing water quality management plans to prevent eutrophication outbreaks in lake waters by targeting and controlling key factors.
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Affiliation(s)
- Linjie Wang
- School of Environment and Natural Resource, Renmin University of China, Beijing, 100872, China
| | - Xiangang Zeng
- School of Environment and Natural Resource, Renmin University of China, Beijing, 100872, China.
| | - Hui Yu
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
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Degradation of Reactive Brilliant Red X-3B by Photo-Fenton-like Process: Effects of Water Chemistry Factors and Degradation Mechanism. WATER 2022. [DOI: 10.3390/w14030380] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Azo dye wastewater belongs to the highly concentrated organic wastewater, which is difficult to be treated by traditional biological processes. The oxidation efficiency of a single physicochemical method is not considerable. Recent research indicated that the advanced oxidation processes (AOPs) based on the highly reactive hydroxyl radical (∙OH) became one of the preferred methods in dealing with such dye wastewater. In this paper, the typical azo dye, reactive brilliant red X-3B, was employed as the target pollutant, and the transition metal Mn and hydrogen peroxide as the catalysts. A photo-Fenton-like process, UV/Mn2+-H2O2 system, was established, which enables a combination of various technologies to improve azo dye degradation efficiency while reducing disposal costs. The results indicated that the UV/Mn2+-H2O2 system had the synergism of Mn2+/H2O2 and UV/H2O2, which was 2.6 times greater than the sum of the two individual effects. And the degradation of X-3B reached the optimum under the conditions of 0.59 mmol/L of the Mn2+, 10 mmol/L of the H2O2, pH = 6 and a high level of DO. The ∙OH, generated from chem-catalytic and photocatalytic decomposition of H2O2, played the predominant role in the decolorization of X-3B and mineralization of its intermediates. The ∙OH tended to attack and break the chromophore group, resulting in the rapid decolorization of X-3B. The azo bond in X-3B was easy to be decomposed in the form of N2, while the triazinyl group was recalcitrant for ring opening. The degradation process of the UV/Mn2+-H2O2 system preferred to be conducted at an acidic condition and appropriate concentrations of Mn2+ and H2O2. The alkaline condition would decrease the utilization of H2O2, and excessive H2O2 would also quench the ∙OH.
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Martins I, Soares J, Neuparth T, Barreiro AF, Xavier C, Antunes C, Santos MM. Prioritizing the Effects of Emerging Contaminants on Estuarine Production under Global Warming Scenarios. TOXICS 2022; 10:46. [PMID: 35202234 PMCID: PMC8877751 DOI: 10.3390/toxics10020046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/28/2021] [Accepted: 01/10/2022] [Indexed: 02/06/2023]
Abstract
Due to non-linear interactions, the effects of contaminant mixtures on aquatic ecosystems are difficult to assess, especially under temperature rise that will likely exacerbate the complexity of the responses. Yet, under the current climatic crisis, assessing the effects of water contaminants and temperature is paramount to understanding the biological impacts of mixtures of stressors on aquatic ecosystems. Here, we use an ecosystem model followed by global sensitivity analysis (GSA) to prioritize the effects of four single emerging contaminants (ECs) and their mixture, combined with two temperature rise scenarios, on the biomass production of a NE Atlantic estuary. Scenarios ran for 10 years with a time-step of 0.1 days. The results indicate that macroinvertebrate biomass was significantly explained by the effect of each single EC and by their mixture but not by temperature. Globally, the most adverse effects were induced by two ECs and by the mixture of the four ECs, although the sensitivity of macroinvertebrates to the tested scenarios differed. Overall, the present approach is useful to prioritize the effects of stressors and assess the sensitivity of the different trophic groups within food webs, which may be of relevance to support decision making linked to the sustainable management of estuaries and other aquatic systems.
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Affiliation(s)
- Irene Martins
- CIMAR/CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Av. General Norton de Matos S/N, 4450-208 Matosinhos, Portugal; (J.S.); (T.N.); (A.F.B.); (C.A.)
| | - Joana Soares
- CIMAR/CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Av. General Norton de Matos S/N, 4450-208 Matosinhos, Portugal; (J.S.); (T.N.); (A.F.B.); (C.A.)
| | - Teresa Neuparth
- CIMAR/CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Av. General Norton de Matos S/N, 4450-208 Matosinhos, Portugal; (J.S.); (T.N.); (A.F.B.); (C.A.)
| | - Aldo F. Barreiro
- CIMAR/CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Av. General Norton de Matos S/N, 4450-208 Matosinhos, Portugal; (J.S.); (T.N.); (A.F.B.); (C.A.)
| | - Cândido Xavier
- FCUP—Faculty of Sciences, University of Porto, Rua do Campo Alegre S/N, 4169-007 Porto, Portugal;
| | - Carlos Antunes
- CIMAR/CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Av. General Norton de Matos S/N, 4450-208 Matosinhos, Portugal; (J.S.); (T.N.); (A.F.B.); (C.A.)
- Aquamuseu do Rio Minho, Parque do Castelinho, 4920-290 Vila Nova de Cerveira, Portugal
| | - Miguel M. Santos
- CIMAR/CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Av. General Norton de Matos S/N, 4450-208 Matosinhos, Portugal; (J.S.); (T.N.); (A.F.B.); (C.A.)
- FCUP—Faculty of Sciences, University of Porto, Rua do Campo Alegre S/N, 4169-007 Porto, Portugal;
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Application of Satellite-Based and Observed Precipitation Datasets for Hydrological Simulation in the Upper Mahi River Basin of Rajasthan, India. SUSTAINABILITY 2021. [DOI: 10.3390/su13147560] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Hydrological modeling is an important tool used for basin management and studying the impacts of extreme events in a river basin. In streamflow simulations, precipitation plays an essential role in hydrological models. Meteorological satellite precipitation measurement techniques provide highly accurate rainfall information with high spatial and temporal resolution. In this analysis, the tropical rainfall monitoring mission (TRMM) 3B42 V7 precipitation products were employed for simulating streamflow by using the soil water assessment tool (SWAT) model. With India Metrological Department and TRMM data, the SWAT model can be used to predict streamflow discharge and identify sensitive parameters for the Mahi basin. The SWAT model was calibrated for 2 years and then independently validated for 2 years by comparing observed and simulated streamflow. A strong correlation was observed between the calibration and validation results for the Paderdibadi station, with a Nash–Sutcliffe efficiency of >0.34 and coefficient of determination (R2) of >0.77. The SWAT model was used to adequately simulate the streamflow for the Upper Mahi basin with a satisfactory R2 value. The analysis indicated that TRMM 3B42 V7 is useful in SWAT applications for predicting streamflow and performance and for sensitivity analysis. In addition, satellite data may require correction before its utilization in hydrological modeling. This study is helpful for stakeholders in monitoring and managing agricultural, climatic, and environmental changes.
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Spatiotemporal Dynamics of Nitrogen Transport in the Qiandao Lake Basin, a Large Hilly Monsoon Basin of Southeastern China. WATER 2020. [DOI: 10.3390/w12041075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The Qiandao Lake Basin (QLB), which occupies low hilly terrain in the monsoon region of southeastern China, is facing serious environmental challenges due to human activities and climate change. Here, we investigated source attribution, transport processes, and the spatiotemporal dynamics of nitrogen (N) movement in the QLB using the Soil and Water Assessment Tool (SWAT), a physical-based model. The goal was to generate key localized vegetative parameters and agronomic variables to serve as credible information on N sources and as a reference for basin management. The simulation indicated that the basin’s annual average total nitrogen (TN) load between 2007 and 2016 was 11,474 tons. Steep slopes with low vegetation coverage significantly influenced the spatiotemporal distribution of N and its transport process. Monthly average TN loads peaked in June due to intensive fertilization of tea plantations and other agricultural areas and then dropped rapidly in July. Subsurface flow is the key transport pathway, with approximately 70% of N loads originating within Anhui Province, which occupies just 58% of the basin area. The TN yields of sub-basins vary considerably and have strong spatial effects on incremental loads entering the basin’ major stream, the Xin’anjiang River. The largest contributor to N loads was domestic sewage (21.8%), followed by livestock production (20.8%), cropland (18.6%), tea land (15.5%), forest land (10.9%), atmospheric deposition (5.6%), orchards (4.6%), industry (1.4%), and other land (0.8%). Our simulation underscores the urgency of increasing the efficiency of the wastewater treatment, conserving slope land, and optimizing agricultural management as components of a comprehensive policy to control N pollution in the basin.
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Nine-Year Systematic Evaluation of the GPM and TRMM Precipitation Products in the Shuaishui River Basin in East-Central China. REMOTE SENSING 2020. [DOI: 10.3390/rs12061042] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Owing to their advantages of wide coverage and high spatiotemporal resolution, satellite precipitation products (SPPs) have been increasingly used as surrogates for traditional ground observations. In this study, we have evaluated the accuracy of the latest five GPM IMERG V6 and TRMM 3B42 V7 precipitation products across the monthly, daily, and hourly scale in the hilly Shuaishui River Basin in East-Central China. For evaluation, a total of four continuous and three categorical metrics have been calculated based on SPP estimates and historical rainfall records at 13 stations over a period of 9 years from 2009 to 2017. One-way analysis of variance (ANOVA) and multiple posterior comparison tests are used to assess the significance of the difference in SPP rainfall estimates. Our evaluation results have revealed a wide-ranging performance among the SPPs in estimating rainfall at different time scales. Firstly, two post-time SPPs (IMERG_F and 3B42) perform considerably better in estimating monthly rainfall. Secondly, with IMERG_F performing the best, the GPM products generally produce better daily rainfall estimates than the TRMM products. Thirdly, with their correlation coefficients all falling below 0.6, neither GPM nor TRMM products could estimate hourly rainfall satisfactorily. In addition, topography tends to impose similar impact on the performance of SPPs across different time scales, with more estimation deviations at high altitude. In general, the post-time IMERG_F product may be considered as a reliable data source of monthly or daily rainfall in the study region. Effective bias-correction algorithms incorporating ground rainfall observations, however, are needed to further improve the hourly rainfall estimates of the SPPs to ensure the validity of their usage in real-world applications.
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Zarrineh N, Abbaspour KC, Holzkämper A. Integrated assessment of climate change impacts on multiple ecosystem services in Western Switzerland. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 708:135212. [PMID: 31810703 DOI: 10.1016/j.scitotenv.2019.135212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/23/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
Climate change can affect the provision of ecosystem services in various ways. In this study, we provide an integrated assessment of climate change impacts on ecosystem services, considering uncertainties in both climate projection and model parameterization. The SWAT model was used to evaluate the impacts on water regulation, freshwater, food, and erosion regulation services for the Broye catchment in Western Switzerland. Downscaled EURO-CORDEX projections were used for three periods of thirty years: base climate (1986-2015), near future (2028-2057), and far future (2070-2099). Results reveal that in the far future, low flow is likely to decrease in summer by 77% and increase in winter by 65%, while peak flow may decrease in summer by 19% and increase in winter by 26%. Reduction in summer precipitation reduces nitrate leaching by 25%; however, nitrate concentrations are projected to increase by 14% due to reduced dilution. An increase in winter precipitation increases nitrate leaching by 44%, leading to an increase of nitrate concentration by 11% despite increasing discharge and dilution. Yields of maize and winter wheat are projected to increase in the near future but decrease in the far future because of increasing water and nutrient stress. Average grassland productivity is projected to benefit from climate change in both future periods due to the extended growing season. This increase in productivity benefits erosion regulation as better soil cover helps to decrease soil loss in winter by 5% in the far future. We conclude that water regulation, freshwater and food services will be negatively affected by climate change. Hence, agricultural management needs to be adapted to reduce negative impacts of climate change on ecosystem services and to utilize emerging production potentials. Our findings highlight the need for further studies of potentials to improve nutrient and water management under future climate conditions.
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Affiliation(s)
- Nina Zarrineh
- Agroscope, Agroecology and Environment Division, Reckenholzstrasse 191, CH-8046 Zürich, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland.
| | - Karim C Abbaspour
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, P.O. Box 611, CH-8600 Dübendorf, Switzerland
| | - Annelie Holzkämper
- Agroscope, Agroecology and Environment Division, Reckenholzstrasse 191, CH-8046 Zürich, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland
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Zhang J, Ni S, Wu W, Huang X, Jiang H, Li Q, Wang J, Wu G, Zorn C, Yu C. Evaluating the effectiveness of the pollutant discharge permit program in China: A case study of the Nenjiang River Basin. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 251:109501. [PMID: 31542624 DOI: 10.1016/j.jenvman.2019.109501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 08/30/2019] [Accepted: 08/30/2019] [Indexed: 06/10/2023]
Abstract
China is continually seeking to improve river water quality. Implemented in 1996, the total pollutant load control system (TPLCS) is a regulatory strategy to reduce total pollutant loads, under which a Pollutant Discharge Permit (PDP) program tracks and regulates nutrient inputs from point source polluters. While this has been promising, the input-response relationship between discharge permits and water quality targets is largely unclear - especially in China's large and complex river basins. In response, this study involved a quantitative analysis method to combine the water quality targets of the 12th Five-Year Plan (2011-2015) with allocated PDPs in the Nenjiang River Basin, China. We demonstrated our approach by applying the Soil and Water Assessment Tool (SWAT) to the Nenjiang River Basin for hydrological and water quality simulation. Ammonia nitrogen (NH3-N) was used as the primary water quality indicator. Modelling indicated that only one control section in the wider river basin did not achieve the water quality target, suggesting that the TPLCS is largely effective. The framework should be applied in other basins to study the effectiveness of PDP policies, advise further updates to the TPLCS, and ultimately aim to achieve freshwater quality targets nationally.
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Affiliation(s)
- Jie Zhang
- Key Laboratory for Geo-Environmental Monitoring of Coastal Zone of the Ministry of Natural Resources, Shenzhen University, Shenzhen, 518060, China; School of Civil Engineering, Shenzhen University, Shenzhen, 518060, China; Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, 100084, China
| | - Shaoqiang Ni
- Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, 100084, China
| | - Wenjun Wu
- State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation, Chinese Academy for Environmental Planning, Beijing, 100012, China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
| | - Xiao Huang
- Norwegian Institute of Bioeconomy Research, Saerheim, Klepp st., 4353, Norway; Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, 100084, China
| | - Hongqiang Jiang
- State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation, Chinese Academy for Environmental Planning, Beijing, 100012, China
| | - Qingquan Li
- Key Laboratory for Geo-Environmental Monitoring of Coastal Zone of the Ministry of Natural Resources, Shenzhen University, Shenzhen, 518060, China; School of Civil Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Jinnan Wang
- State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation, Chinese Academy for Environmental Planning, Beijing, 100012, China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Guofeng Wu
- Key Laboratory for Geo-Environmental Monitoring of Coastal Zone of the Ministry of Natural Resources, Shenzhen University, Shenzhen, 518060, China
| | - Conrad Zorn
- Environmental Change Institute, University of Oxford, Oxford, UK
| | - Chaoqing Yu
- Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, 100084, China.
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Boukari A, Benabdallah S, Everbecq E, Magermans P, Grard A, Habaieb H, Deliège JF. Assessment of Agriculture Pressures Impact on the Joumine River Water Quality Using the PEGASE Model. ENVIRONMENTAL MANAGEMENT 2019; 64:520-535. [PMID: 31542813 DOI: 10.1007/s00267-019-01207-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 09/03/2019] [Indexed: 06/10/2023]
Abstract
The protection of the aquatic environment while managing the risk of water scarcity in the Mediterranean region is challenging. Ensuring future sustainability of water resources needs improved monitoring networks and early warning system of future trends of water quality. A specific concern is given to nonpoint source pollution from agriculture, which is often the main source of water quality degradation in rivers. In this work, we focused on the Joumine river basin, a rural-catchment situated north Tunisia dominated by agricultural activities and exposed to eutrophication problems. Aiming to present an assessment framework of the spatial-temporal water quality variability and quantify "pressure-impact" relationships, we used a physically based modeling approach involving the river/basin integrated model PEGASE (Planification Et Gestion de l'ASsainissement des Eaux). PEGASE simulates watercourses physicochemical quality depending on the morphology of the drainage network, hydrometeorological conditions and natural and anthropogenic influences. Simulation results showed a better description of Joumine river water quality and helped in identifying exposed areas to nutrients export. Results have also emphasized the contribution of different pollution sources. We were able to examine the potential impact of agriculture diffuse pollution and we found that Nitrate is the element mostly threatening water quality. The nutrients patterns suggest that climate and farming practices are important factors controlling their transfer. These findings demonstrate that the adopted assessment approach in investigating the behavior of the studied hydrosystem can be a useful support to develop an appropriate surface water quality management program in a semiarid context.
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Affiliation(s)
- Amira Boukari
- National Agronomy Institute of Tunisia, GREEN-TEAM Laboratory, University of Carthage, 43 Avenue Charles Nicolle, 1082, Tunis Mahrajène, Tunisia.
- Aquapôle Research and Development unit, Freshwater and Oceanic Science Unit of Research, University of Liège, Quartier Polytech 1, Allée de la découverte, 11-bât.B53, 4000, Liège, Belgium.
| | - Sihem Benabdallah
- Center for Water Research and Technologies, CERTE, BP 273, 8020, Soliman, Tunisia
| | - Etienne Everbecq
- Aquapôle Research and Development unit, Freshwater and Oceanic Science Unit of Research, University of Liège, Quartier Polytech 1, Allée de la découverte, 11-bât.B53, 4000, Liège, Belgium
| | - Pol Magermans
- Aquapôle Research and Development unit, Freshwater and Oceanic Science Unit of Research, University of Liège, Quartier Polytech 1, Allée de la découverte, 11-bât.B53, 4000, Liège, Belgium
| | - Aline Grard
- Aquapôle Research and Development unit, Freshwater and Oceanic Science Unit of Research, University of Liège, Quartier Polytech 1, Allée de la découverte, 11-bât.B53, 4000, Liège, Belgium
| | - Hamadi Habaieb
- National Agronomy Institute of Tunisia, GREEN-TEAM Laboratory, University of Carthage, 43 Avenue Charles Nicolle, 1082, Tunis Mahrajène, Tunisia
| | - Jean-François Deliège
- Aquapôle Research and Development unit, Freshwater and Oceanic Science Unit of Research, University of Liège, Quartier Polytech 1, Allée de la découverte, 11-bât.B53, 4000, Liège, Belgium
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Ma P, Liu S, Yu Q, Li X, Han X. Sources and transformations of anthropogenic nitrogen in the highly disturbed Huai River Basin, Eastern China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:11153-11169. [PMID: 30796665 DOI: 10.1007/s11356-019-04470-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 02/04/2019] [Indexed: 06/09/2023]
Abstract
Due to serious nitrogen pollution in the Huai River, Eastern China, nitrogenous concentrations and dual stable isotopes (δ15N and δ18O) were measured to ascertain the sources and transformation of nitrogen in the Shaying River, the largest and most polluted tributary of the Huai River during the summer and winter seasons. Total nitrogen (TN), NO3-, and NH4+ were significantly higher in winter, with values of 7.84 ± 3.44 mg L-1, 2.31 ± 0.81 mg L-1, and 3.00 ± 2.24 mg L-1, respectively, while the highest nitrogen compounds occurred in the Jialu River, one of the tributaries of the Shaying River, in both summer and winter. Isotope characteristics of nitrate reveal that manure and sewage were the principal nitrate sources in both summer (62.44 ± 19.66%) and winter (67.33 ± 15.45%), followed by soil organic nitrogen, with 24.94 ± 15.52% in summer and 26.33 ± 9.45% in winter. Values of δ15N-suspended particulate nitrogen (SPN) ranged from 0.78 to 13.51%, revealing that point source from industrial and domestic sewage accounted for the largest input to SPN at most sites, whereas soil organic nitrogen and agricultural fertilizers were found in the Jialu River in both sampling periods. Point sources from septic/manure and household waste were the main contributors to ammonium in most river water samples in both summer and winter; most wastewater discharged into the river was untreated, which was one of the main reasons for the high level of ammonium in winter. Nitrogen pollution and the dams had an effect on N transformation in the river. Significant assimilation of NH4+ and aerobic denitrification competed for NH4+, resulting in the weakness of nitrification in the summer. Denitrification was also an important process of nitrate removal during the summer, whereas nitrification was a key N transformation process in the river in the winter time. To reduce nitrogen pollution and improve water quality, greater effort should be focused on the management of sources from urban input as well as on the improvement in sewage treatment.
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Affiliation(s)
- Pei Ma
- Henan University of Engineering, No. 1 Xianghe Road, Zhengzhou, 451191, Henan, China.
| | - Shuaixia Liu
- Henan University of Engineering, No. 1 Xianghe Road, Zhengzhou, 451191, Henan, China
| | - Qibiao Yu
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xinyan Li
- Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Xinqing Han
- Zhoukou hydrology and Water Resources Survey Bureau, Zhoukou, 466000, Henan, China
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Iqbal MM, Shoaib M, Farid HU, Lee JL. Assessment of Water Quality Profile Using Numerical Modeling Approach in Major Climate Classes of Asia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15102258. [PMID: 30326666 PMCID: PMC6209875 DOI: 10.3390/ijerph15102258] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/11/2018] [Accepted: 10/12/2018] [Indexed: 11/16/2022]
Abstract
A river water quality spatial profile has a diverse pattern of variation over different climatic regions. To comprehend this phenomenon, our study evaluated the spatial scale variation of the Water Quality Index (WQI). The study was carried out over four main climatic classes in Asia based on the Koppen-Geiger climate classification system: tropical, temperate, cold, and arid. The one-dimensional surface water quality model, QUAL2Kw was selected and compared for water quality simulations. Calibration and validation were separately performed for the model predictions over different climate classes. The accuracy of the water quality model was assessed using different statistical analyses. The spatial profile of WQI was calculated using model predictions based on dissolved oxygen (DO), biological oxygen demand (BOD), nitrate (NO3), and pH. The results showed that there is a smaller longitudinal variation of WQI in the cold climatic regions than other regions, which does not change the status of WQI. Streams from arid, temperate, and tropical climatic regions show a decreasing trend of DO with respect to the longitudinal profiles of main river flows. Since this study found that each climate zone has the different impact on DO dynamics such as reaeration rate, reoxygenation, and oxygen solubility. The outcomes obtained in this study are expected to provide the impetus for developing a strategy for the viable improvement of the water environment.
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Affiliation(s)
| | - Muhammad Shoaib
- Graduate School of Water Resources, Sungkyunkwan University, Suwon-si 2066, Korea.
| | - Hafiz Umar Farid
- Department of Agricultural Engineering, Bahauddin Zakariya University, Multan 66000, Pakistan.
| | - Jung Lyul Lee
- Graduate School of Water Resources, Sungkyunkwan University, Suwon-si 2066, Korea.
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