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Phosphorus flow characteristics in the waste system of Poyang Lake Watershed over the past 70 years.
Chen, Zhiqin; Liu, Wei; Qin, Tian; Wu, Mengting; Li, Zhiwen; Zhang, Yalan; Wu, Daishe; Abakumov, Evgeny; Chebykina, Ekaterina; Zhang, Yondong; Dai, Jianjun; Xiao, Huoqing; Xie, Xianchuan; Kong, Ming.
  • Chen Z; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China.
  • Liu W; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China.
  • Qin T; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China.
  • Wu M; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China.
  • Li Z; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China.
  • Zhang Y; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China.
  • Wu D; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China; School of Materials and Chemical Engineering, Pingxiang University, Pingxiang City of Jiangxi Province 337000, China.
  • Abakumov E; Department of Applied Ecology, Saint Petersburg State University, Saint Petersburg 199178, Russian Federation.
  • Chebykina E; Department of Applied Ecology, Saint Petersburg State University, Saint Petersburg 199178, Russian Federation.
  • Zhang Y; Jiangxi Nanxin Environmental Protection Technology Co. LTD, Jiujiang City of Jiangxi Province 330300, China.
  • Dai J; Jiangxi Nanxin Environmental Protection Technology Co. LTD, Jiujiang City of Jiangxi Province 330300, China.
  • Xiao H; Jiangxi Academy of Eco-environmental Sciences and Planning, Nanchang, Jiangxi 330039, China.
  • Xie X; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China. Electronic address: xchxie@ncu.edu.cn.
  • Kong M; Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China. Electronic address: kongming@nies.org.
Sci Total Environ ; 941: 173704, 2024 Sep 01.
Article en En | MEDLINE | ID: mdl-38844222
ABSTRACT
With the intensification of human activities, the amount of phosphorus (P)-containing waste has increased. When such waste is not recycled, P is released into the environment, leading to environmental issues such as the eutrophication of water bodies. In this study, based on the material flow analysis method, a P Waste Flow analysis model (P-WFA) was developed to analyze the P flow in the waste system of Poyang Lake, the largest freshwater lake in China. To address the research gap in long-term P flow analysis at the watershed scale, this study quantified the P content in the waste system of the Poyang Lake Watershed from 1950 to 2020. The analysis revealed that from 1950 to 2020, the total P input into the waste system increased from 5.49 × 104 tons in 1950 to 2.28 × 105 tons in 2020. The breeding industry system was identified as the primary source, accounting for 25.19-41.59 % of the total waste system. Over the past 70 years, P loss to surface water from waste systems has been primarily facilitated by manure from the breeding industry, as well as drainage from crop farming systems (77.74 % in 2020). At the same time, the P recycling rate (PRR) of the waste system exhibited an initial increase followed by a decrease, increasing from 44.14 % to 47.75 % before dropping to 44.41 %. Population growth, urbanization, and changes in consumption levels in Jiangxi Province have led to changes in the dietary structure and fertilizer use, consequently affecting the P cycling pattern. This study presents a comprehensive P flow model for waste systems in the Poyang Lake Watershed. This model can be used as a reference to enhance P cycling and manage P loss in other large freshwater lakes.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2024 Tipo del documento: Article

Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2024 Tipo del documento: Article