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Chang TC, Lin WY, Fang TH. Spatial variability of nitrogen cycling in the sediments of the Danshuie River Estuary (Northern Taiwan). MARINE POLLUTION BULLETIN 2023; 197:115776. [PMID: 37979530 DOI: 10.1016/j.marpolbul.2023.115776] [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: 05/08/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/20/2023]
Abstract
Dissolved N species, TOC and total N (TN) in sediment cores (SC) collected from an eutrophic estuary were analyzed to understand the N geochemical variation in SC of the eutrophic estuary. Extremely higher concentrations of ammonium (6550 μM) and DON (2050 μM) were observed in pore water of the upper estuary and both concentrations generally accounted for 65-99 % and 1-34 % of the dissolved total N pool, respectively, in the three sediment pore waters. The DON and TN concentrations decreased with increasing depth in SC of the upper estuary, opposite the ammonium profile, suggesting that the mineralization of DON and TN provided the ammonium source to the SC. While, the TN mineralization was more profound than the DON mineralization in SC of the middle and lower estuary. The mineralization rate of DON and TN obviously differed from the different depth intervals of the three SC.
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Affiliation(s)
- Ting Chia Chang
- Department of Marine Environmental Informatics, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Wei Yu Lin
- Department of Marine Environmental Informatics, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Tien Hsi Fang
- Department of Marine Environmental Informatics, National Taiwan Ocean University, Keelung 202, Taiwan; Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan.
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Wen Y, Zhang W, Shan B. Amino acids as indicators of seasonal variations in organic matter degradation in surface sediments from a shallow lake. J Environ Sci (China) 2023; 131:1-10. [PMID: 37225371 DOI: 10.1016/j.jes.2022.10.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/26/2022] [Accepted: 10/26/2022] [Indexed: 05/26/2023]
Abstract
Degradation of organic matter (OM) in sediments is a key link in nutrient cycling and sedimentation processes in lakes. The aim of this study was to explore the degradation of OM in surface sediments of a shallow lake (Baiyangdian Lake, China) under seasonal temperature variations. For this, we used the amino acid-based degradation index (DI) and the spatiotemporal distribution characteristics and sources of OM. Sediment OM in the lake mainly originated from freshwater aquatic plants and terrestrial C4 plants. The sediment at some sampling sites was affected by surrounding crops. The organic carbon and total nitrogen contents, and the total hydrolyzed amino acid concentrations in the sediments were highest in summer and lowest in winter. The lowest DI occurred in spring, which indicated that the OM in the surface sediment at this time was highly degraded and relatively stable, and the highest DI occurred in winter, which showed that the sediment was fresh. The water temperature was positively correlated with the organic carbon content (p < 0.01) and total hydrolyzed amino acids concentration (p < 0.05). Seasonal variations in the overlying water temperature had a large effect on OM degradation in the lake sediments. Our results will facilitate the management and restoration of lake sediments that suffer from endogenous release of OM in a warming climate.
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Affiliation(s)
- Yan Wen
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenqiang Zhang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Baoqing Shan
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Li T, Zhou P, Ding Y, Tang Q, Zhou S, Liu Y. Distribution Characteristics and Source Analysis of Nitrogen and Phosphorus in Different Rivers in Two Water Period: A Case Study of Pi River and Shiting River in the Upper Reaches of Tuo River in China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:12433. [PMID: 36231734 PMCID: PMC9566003 DOI: 10.3390/ijerph191912433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/21/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
In this paper, the distribution characteristics of total nitrogen (TN), total phosphorus (TP) and fractions of nitrogen and phosphorus in water and surface sediments of the Pi and Shiting rivers in the dry and wet seasons were studied by molybdenum blue/ascorbic acid spectrophotometry and Standard Measurements and Testing (SMT). Correlation analysis, cluster analysis and principal component analysis were used to identified nitrogen and phosphorus pollution sources. The results showed that: (1) nitrogen and phosphorus in water and surface sediments in the study area were at different levels. (2) In the Pi river, the decomposition of animal and plant residues, the leachate from the accumulation of aquaculture wastewater and urban domestic sewage were the main sources of nitrogen and phosphorus pollution, while in the Shiting river, the unreasonable application of pesticides and fertilizers, the degradation of animal and plant residues, agricultural wastewater from agricultural drainage channels, industrial production wastewater and the weathering of agricultural wastes had a great impact on the nitrogen and phosphorus pollution. The results in this study provide reliable experimental data and a reference to local relevant departments for the implementation of effective control measures for the reduction of the nitrogen and phosphorus pollution load in the river basin.
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Affiliation(s)
- Tongfei Li
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Pingyan Zhou
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Yunchang Ding
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Qiding Tang
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Shanshan Zhou
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Ying Liu
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Beijing Engineering Research Center of Food Environment and Public Health, Minzu University of China, Beijing 100081, China
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Yang X, Hu C, Wang B, Lin H, Xu Y, Guo H, Liu G, Ye J, Gao D. Sediment nitrogen mineralization and immobilization affected by non-native Sonneratia apetala plantation in an intertidal wetland of South China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 305:119289. [PMID: 35427679 DOI: 10.1016/j.envpol.2022.119289] [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: 01/07/2022] [Revised: 03/14/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
The mineralization and immobilization of nitrogen (N) are critical biogeochemical transformations in estuarine and coastal sediments. However, the biotic and abiotic mechanisms that regulate the two processes in different aged mangrove sediments remain poorly understood. Here, we used 15N isotope dilution method to investigate the changes in sediment N mineralization (GNM) and NH4+ immobilization (GAI) of different aged mangrove habitats (including 0, 10, and 20 years Sonneratia apetala, as well as >40 years mature native Kandelia obovata) in Qi'ao Island, Guangdong Province, China. Measured GNM and GAI rates ranged from 2.69 to 17.53 μg N g-1 d-1 and 2.29-21.38 μg N g-1 d-1, respectively, which varied both spatially and seasonally. The ratio of GNM to total N (PAM%, 0.24-0.86%) also varied spatially and seasonally, but the ratio of GAI to GNM (RAI, 0.79-1.54) only varied spatially. Mangrove restoration significantly increased the N mineralization and immobilization rates, but remained lower than those of mature native Kandelia obovata habitat. The sediment bacterial abundance, labile organic matter and temperature are the dominant factors in controlling N mineralization and immobilization. Our findings suggested that exotic mangrove Sonneratia aperale plantation can enhance sediment N mineralization and immobilization rates and improve N stability through accumulated biomass rapidly. Overall, these results provide new insights into sediment N transformation processes and associated influencing mechanisms in such intertidal wetlands profoundly influenced by human activities.
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Affiliation(s)
- Xiaolong Yang
- State Environmental Protection Key Laboratory of Coastal Ecosystem, National Marine Environmental Monitoring Center, Dalian, 116023, China; Postdoctoral Workstation of Dalian SEM Bio-Engineering Technology Co. Ltd., Dalian, 116620, China
| | - Chengye Hu
- Fishery College, Zhejiang Ocean University, Zhoushan, 316022, China
| | - Bin Wang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China
| | - Hao Lin
- School of Geographic Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Yongping Xu
- Postdoctoral Workstation of Dalian SEM Bio-Engineering Technology Co. Ltd., Dalian, 116620, China
| | - Hao Guo
- State Environmental Protection Key Laboratory of Coastal Ecosystem, National Marine Environmental Monitoring Center, Dalian, 116023, China
| | - Guize Liu
- State Environmental Protection Key Laboratory of Coastal Ecosystem, National Marine Environmental Monitoring Center, Dalian, 116023, China
| | - Jinqing Ye
- State Environmental Protection Key Laboratory of Coastal Ecosystem, National Marine Environmental Monitoring Center, Dalian, 116023, China
| | - Dengzhou Gao
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China.
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Ding S, Li C, Ding X, Li G, Ban G, Xia Z, Zhao X, Lin Q, Wang X. An exploration of manure derived N in soils using 15N after the application of biochar, straw and a mix of both. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 804:150239. [PMID: 34798750 DOI: 10.1016/j.scitotenv.2021.150239] [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: 06/18/2021] [Revised: 08/07/2021] [Accepted: 09/05/2021] [Indexed: 06/13/2023]
Abstract
It is common practice to apply manure onto soil as an effective way to increase soil fertility. However, the impact of different carbon sources on the transformation and fate of manure derived nitrogen (N) remains poorly understood. This study investigated the mineralization and immobilization turnover (MIT) of various manure-N fractions using sequential extractions and 15N tracing techniques combined after soil amendment with biochar, straw and mixtures thereof. Soil N was fractionated into mineral nitrogen (NH4+ and NO3-), microbial biomass nitrogen (MBN), hot water extractable organic nitrogen (HWDON), hydrochloric acid extractable organic nitrogen (HCl-N), and residual nitrogen (RN). Results showed that biochar addition increased the 15NH4+ content by 45% during the early stage. However, the high pH and labile C absence of biochar inhibited the remineralization of microbial immobilization N during the mid-to-late stage. Straw addition enhanced 15NH4+ assimilation by 10% to form HCl-15N. After that, microbial cellular structures and secondary metabolites were remineralized to meet crop N requirements. Adding carbon source mixtures with the organic fertilizer manifested the relationship between biochar and straw. The labile C content of the carbon sources rather than the C/N ratio was the critical factor regulating the N-MIT process. Overall, these findings offer new insights into the N transformation approaches using the co-application technique of organic amendments.
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Affiliation(s)
- Shuai Ding
- Department of Soil and Water Sciences, China Agricultural University, Beijing 100193, PR China
| | - Caibin Li
- Bijie Tobacco Company of Guizhou Province, Bijie, Guizhou 551700, PR China
| | - Xinyu Ding
- Department of Soil and Water Sciences, China Agricultural University, Beijing 100193, PR China
| | - Guitong Li
- Department of Soil and Water Sciences, China Agricultural University, Beijing 100193, PR China
| | - Guojun Ban
- Bijie Tobacco Company of Guizhou Province, Bijie, Guizhou 551700, PR China
| | - Zhongwen Xia
- Bijie Tobacco Company of Guizhou Province, Bijie, Guizhou 551700, PR China
| | - Xiaorong Zhao
- Department of Soil and Water Sciences, China Agricultural University, Beijing 100193, PR China
| | - Qimei Lin
- Department of Soil and Water Sciences, China Agricultural University, Beijing 100193, PR China
| | - Xiang Wang
- Department of Soil and Water Sciences, China Agricultural University, Beijing 100193, PR China.
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