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Chang C, Wang R, Xu L, Zhao Z, Cheng W, Hao J, Huang F. Historical co-enrichment, source attribution, and risk assessment of critical nutrients and heavy metal/metalloids in lake sediments: insights from Chaohu Lake, China. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:390. [PMID: 39172153 DOI: 10.1007/s10653-024-02168-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Accepted: 08/11/2024] [Indexed: 08/23/2024]
Abstract
In Chinese freshwater lakes, eutrophication often coincides with heavy metal/metalloids (HM/Ms) pollution, yet the coevolution of critical nutrients (P, S, Se) and HM/Ms (Cd, Hg, etc.) remains understudied. To address this gap, we conducted a sedimentary chemistry analysis on a 30 cm-deep core, dating back approximately 200 years, retrieved from Chaohu Lake, China. The age-depth model revealed a gradual increase in deposition rates over time. Notably, the concentrations and enrichment factors (EFs) of most target elements surged in the uppermost ~ 15 cm layer, covering the period from 1953 to 2013, while both the concentrations and EFs in deeper layers remained relatively stable, except for Hg. This trend indicates a significant co-enrichment and near-synchronous increase in the levels and EFs of both nutrients and HM/Ms in the upper sediment layers since the mid-twentieth century. Anthropogenic factors were identified as the primary drivers of the enrichment of P, Se, Cd, Hg, Zn, and Te in the upper core, with their contributions also showing a coupled evolutionary trend over time. Conversely, geological activities governed the enrichment of elements in the lower half of the core. The gradual accumulation of anthropogenic Hg between the - 30 to - 15 cm layers might be attributed to global Hg deposition resulting from the industrial revolution. The ecological risk index (RI) associated with HM/Ms loading has escalated rapidly over the past 50 years, with Cd and Hg posing the greatest threats. Furthermore, the PMF model was applied to specifically quantify source contributions of these elements in the core, with anthropogenic and geogenic factors accounting for ~ 60 and ~ 40%, respectively. A good correlation (r2 = 0.87, p < 0.01) between the PMF and Ti-normalized method was observed, indicating their feasibility and cross-validation in source apportionment. Finally, we highlighted environment impact and health implications of the co-enrichment of nutrients and HM/Ms. This knowledge is crucial for developing strategies to protect freshwater ecosystems from the combined impacts of eutrophication and HM/Ms pollution, thereby promoting water environment and human health.
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Affiliation(s)
- Chuanyu Chang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China.
- State Key Laboratory of Lithospheric and Environmental Coevolution, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China.
| | - Ruirui Wang
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Liqiang Xu
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China.
| | - Zhenjie Zhao
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, 550025, China
| | - Wenhan Cheng
- College of Resources and Environment, Anhui Agriculture University, Hefei, 230036, Anhui, China
| | - Jihua Hao
- State Key Laboratory of Lithospheric and Environmental Coevolution, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China
| | - Fang Huang
- State Key Laboratory of Lithospheric and Environmental Coevolution, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China
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Wang X, Xia Y, Zhang Y, Ji Q, Yan G, Huang B, He M, Yang Y, Zhong M, He H, Yang P, Liu X, Wu Q, Sabel CE, Lei P, Jin Z. Evidence of economic development revealed in centennial scale sedimentary records of organic pollutants in Huguangyan Marr Lake. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172044. [PMID: 38554953 DOI: 10.1016/j.scitotenv.2024.172044] [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: 11/24/2023] [Revised: 03/09/2024] [Accepted: 03/26/2024] [Indexed: 04/02/2024]
Abstract
Sedimentary records of polycyclic aromatic hydrocarbons (PAHs) and phthalates could reflect energy consumption and industrial production adjustment. However, there is limited knowledge about their effects on variations of PAH and phthalate compositions in the sediment core. The PAH and phthalate sedimentary records in Huguangyan Maar Lake in Guangdong, China were constructed, and random forest models were adopted to quantify the associated impact factors. Sums of sixteen PAH (∑16 PAH) and seven phthalate (∑7 PAE) concentrations in the sediment ranged from 28.8 to 1110 and 246-4290 μg/kg dry weight in 1900-2020. Proportions of 5-6 ring PAHs to the ∑16 PAHs increased from 32.0 %-40.7 % in 1900-2020 with increased coal and petroleum consumption, especially after 1980. However, those of 2-3 ring PAHs decreased from 30.7 % to 23.6 % due to the biomass substitution with natural gas. The proportions of bis (2-ethylhexyl) phthalate to the ∑7 PAEs decreased from 52.3 %-29.1 % in 1900-2020, while those of di-isobutyl phthalate increased (13.7 % to 42.3 %). The shift from traditional plasticizers to non-phthalates drove this transformation, though the primary plastic production is increasing. Our findings underscore the effectiveness of optimizing energy structures and updating chemical products in reducing organic pollution in aquatic environments.
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Affiliation(s)
- Xinkai Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yubao Xia
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Yanxia Zhang
- School of Environment, Nanjing Normal University, Nanjing 210023, China; Aarhus Institute of Advanced Studies, Aarhus University, 8000 Aarhus, Denmark; BERTHA - Big Data Centre for Environment and Health, Department of Public Health, Aarhus University, 8000 Aarhus, Denmark.
| | - Qingsong Ji
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Guojing Yan
- State Key Laboratory of Soil & Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Biao Huang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Maoyong He
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Yi Yang
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Ming Zhong
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Huan He
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Pengfei Yang
- Key Laboratory of Soil Resource & Biotech Applications, Shaanxi Academy of Sciences, Xi'an Botanical Garden of Shaanxi Province (Institute of Botany of Shaanxi Province), Xi'an 710061, China
| | - Xiaofei Liu
- Key Laboratory of Soil Resource & Biotech Applications, Shaanxi Academy of Sciences, Xi'an Botanical Garden of Shaanxi Province (Institute of Botany of Shaanxi Province), Xi'an 710061, China
| | - Qiumei Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Clive E Sabel
- BERTHA - Big Data Centre for Environment and Health, Department of Public Health, Aarhus University, 8000 Aarhus, Denmark; Department of Public Health, Aarhus University, 8000 Aarhus, Denmark; School of Geography, Earth and Environmental Sciences, University of Plymouth, UK
| | - Pei Lei
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.
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Fan J, Wang Y, Cui K. Three-century climate variations recovered from Lake Heilongtan in southwest China and potential Anthropogenic evidences. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169094. [PMID: 38056659 DOI: 10.1016/j.scitotenv.2023.169094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 12/01/2023] [Accepted: 12/02/2023] [Indexed: 12/08/2023]
Abstract
Under increasing influences of human activities on earth surface system, the concept of Anthropocene has been proposed and widely investigated to represent such a human-dominated geological epoch. To acquire further details about the Anthropocene, investigations on high-resolution continuous records are essentially necessary, especially for regions under notable human impacts. Here, a continuous sediment record covering the past three centuries was collected from Lake Heilongtan, a closed basin lake located in the Hengduan Mountains, in southwest China. High-resolution sedimentary proxies were examined to reconstruct past climate and environment changes, including grain size distribution, geochemical element composition, and organic matter content. The results indicated that water levels were relatively higher under generally warm and wet conditions between 1717 and 1800 CE, while a decline in regional moisture after 1800 CE caused serious shrinkage of the lake level. Comparisons with regional paleoclimate records revealed that solar activity played a significant role in promoting climate variations in southwest China. After 1910 CE, the sedimentary proxies revealed an out-of-phase with regional climate changes, especially the progressive increase after 1950 CE. With the expansion of regional population, the intensified human activities have possibly affected the catchment erosion and sedimentation processes, accounting for the deviation from natural climate changes. Accordingly, the reconstructed sedimentation history in Lake Heilongtan experienced a possible transition from natural-driven to human-dominant status during the past three centuries, revealing potential evidence for the Anthropocene in southwest China.
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Affiliation(s)
- Jianing Fan
- College of Resource Environment and Tourism, Capital Normal University, 100048 Beijing, PR China
| | - Yongbo Wang
- College of Resource Environment and Tourism, Capital Normal University, 100048 Beijing, PR China.
| | - Kai Cui
- College of Resource Environment and Tourism, Capital Normal University, 100048 Beijing, PR China
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Fan J, Zhai D, Xu H, Wei X, Jin C, Jiang H, Shi W, Liu X. Distinct lake sedimentary imprints of earthquakes, floods and human activities in the Xiaojiang Fault zone: Towards a quantitative paleoseismograph in the southeastern Tibetan Plateau. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 868:161662. [PMID: 36681332 DOI: 10.1016/j.scitotenv.2023.161662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/08/2023] [Accepted: 01/13/2023] [Indexed: 06/17/2023]
Abstract
Lake sediments that widely distributed in the active and complicated fault zones have been recently showing great potential for paleoseismic reconstruction. However, flood events and human activities may make the seismic signal unrecognizable. In this study, high-resolution analyses of sedimentary structure, physical and chemical proxies, as well as absolutely radioactive dating were conducted on seven representative sediment cores from the depocenter, nearshore and inlet areas of Yangzong Lake, a typical fault lake in the Xiaojiang Fault zone, southeastern Tibetan Plateau (TP). These new data were calibrated by historical documents, suggesting that seismically induced mass-transport deposits (MTDs, i.e., turbidites) were massive and/or amalgamated (earthquake doublet), became fining and thickening towards the lake center (without changing lake morphology), and occasionally exhibited soft sediment deformation structures (SSDs, i.e., microfaults). These sediments were relatively poorly sorted and instantaneously deposited from slope failures within the lake. An extremely strong earthquake could cause coseismic subsidence of the lake basin and destruct the local hydrological system, resulting in exceptionally high Mn and total inorganic carbon (TIC) contents in the lake center. In contrast, flood deposits were thinner with horizontal beddings, had higher terrestrial organic matter (higher C/N ratios), and distributed locally in the lake inlet area. Human activities-induced sediments were inversely graded, poorly sorted and gradually deposited, had horizontal beddings and no erosive base, and exhibited high carbon, Pb and Zn contents and low C/N ratios. In addition, macroseismic investigations and statistical results from intensity prediction equations (IPEs) provided a conservative threshold of ∼8 Modified Mercalli Intensities (MMI) for triggering turbidites, and a ∼ 10 MMI for inducing coseismic subsidence and hydrological destruction. This study was among the first attempts to establish a quantitative lacustrine paleoseismograph in the southeastern TP, and the new results would greatly improve the valid assessment of geohazard risks.
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Affiliation(s)
- Jiawei Fan
- State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China; Xinjiang Pamir Intracontinental Subduction National Observation and Research Station, Beijing 100029, China; Urumqi Institute of Central Asia Earthquake, China Earthquake Administration, Urumqi 830011, China.
| | - Dayou Zhai
- Yunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming 650500, China; MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment, Yunnan University, Kunming 650500, China
| | - Hongyan Xu
- State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China.
| | - Xiaotong Wei
- State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China
| | - Changfei Jin
- Yunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming 650500, China; MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment, Yunnan University, Kunming 650500, China
| | - Hanchao Jiang
- State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China; Xinjiang Pamir Intracontinental Subduction National Observation and Research Station, Beijing 100029, China; Urumqi Institute of Central Asia Earthquake, China Earthquake Administration, Urumqi 830011, China
| | - Wei Shi
- State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China
| | - Xingqi Liu
- College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
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