{"title":"Transition of phosphorus balance steady-state redirects the relationship of phosphorus mediums in Poyang Lake, China","authors":"","doi":"10.1016/j.ecolind.2024.112633","DOIUrl":null,"url":null,"abstract":"<div><p>The phosphorus fate is critical to aquatic environment and ecosystem in lake. The relationship of phosphorus distribution in different mediums remains unknown under the fluctuation of phosphorus balance steady-state in lake. This study investigates the phosphorus balance of import and export in the Poyang Lake from 1990 to 2019, uncovering the transitional process of phosphorus balance steady-state and its influence on the phosphorus distribution relationship in different mediums. Our finding demonstrates that the phosphorus balance steady-state underwent four transitions during the study period of 1990–2019, resulting in a more fragile lake environment and ecosystem, with shorter intervals between quasi-balance states in Poyang Lake. The rate of sediment phosphorus burial and net phosphorus deposition increased significantly before the third phosphorus balance steady-state (2011–2013). However, the net deposition rate decreased by 5.3% with an increase in aquatic phosphorus after the third transition of phosphorus balance steady-state (2014) in Poyang Lake. Sediment played a significant role in redirecting from a net phosphorus sink to a net phosphorus source for water environment. The influence of phosphorus retention and sediment burial shifted from antagonism to synergism in increasing phosphorus content of waterbody, leading to a 5.4% rise in potential sources of aquatic phosphorus loading. These findings strengthen our understanding of phosphorus cycling and offer guidance for managing water environments in lakes. This work plays a vital role in regional water quality maintenance and water supply safety.</p></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":null,"pages":null},"PeriodicalIF":7.0000,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1470160X24010902/pdfft?md5=aa6a2eba60a5629b34692dcad4badc8b&pid=1-s2.0-S1470160X24010902-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ecological Indicators","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1470160X24010902","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
The phosphorus fate is critical to aquatic environment and ecosystem in lake. The relationship of phosphorus distribution in different mediums remains unknown under the fluctuation of phosphorus balance steady-state in lake. This study investigates the phosphorus balance of import and export in the Poyang Lake from 1990 to 2019, uncovering the transitional process of phosphorus balance steady-state and its influence on the phosphorus distribution relationship in different mediums. Our finding demonstrates that the phosphorus balance steady-state underwent four transitions during the study period of 1990–2019, resulting in a more fragile lake environment and ecosystem, with shorter intervals between quasi-balance states in Poyang Lake. The rate of sediment phosphorus burial and net phosphorus deposition increased significantly before the third phosphorus balance steady-state (2011–2013). However, the net deposition rate decreased by 5.3% with an increase in aquatic phosphorus after the third transition of phosphorus balance steady-state (2014) in Poyang Lake. Sediment played a significant role in redirecting from a net phosphorus sink to a net phosphorus source for water environment. The influence of phosphorus retention and sediment burial shifted from antagonism to synergism in increasing phosphorus content of waterbody, leading to a 5.4% rise in potential sources of aquatic phosphorus loading. These findings strengthen our understanding of phosphorus cycling and offer guidance for managing water environments in lakes. This work plays a vital role in regional water quality maintenance and water supply safety.
期刊介绍:
The ultimate aim of Ecological Indicators is to integrate the monitoring and assessment of ecological and environmental indicators with management practices. The journal provides a forum for the discussion of the applied scientific development and review of traditional indicator approaches as well as for theoretical, modelling and quantitative applications such as index development. Research into the following areas will be published.
• All aspects of ecological and environmental indicators and indices.
• New indicators, and new approaches and methods for indicator development, testing and use.
• Development and modelling of indices, e.g. application of indicator suites across multiple scales and resources.
• Analysis and research of resource, system- and scale-specific indicators.
• Methods for integration of social and other valuation metrics for the production of scientifically rigorous and politically-relevant assessments using indicator-based monitoring and assessment programs.
• How research indicators can be transformed into direct application for management purposes.
• Broader assessment objectives and methods, e.g. biodiversity, biological integrity, and sustainability, through the use of indicators.
• Resource-specific indicators such as landscape, agroecosystems, forests, wetlands, etc.