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• W4288045677 endingPage "157523" @default.
• W4288045677 startingPage "157523" @default.
• W4288045677 abstract "Quantitatively assessing watershed health under anthropogenic activities and management responses is important for the scientific planning and management of watersheds. The current research on watershed health assessments insufficiently reflects watershed scale information from different dimensions, which leads to the incomplete understanding of watersheds and thus the lack of systematic management. This study investigated the health status in the Chaohu Lake watershed (CLW) based on monthly sampling data at 46 river sites in 2018. Watershed health assessment comprehensively considered four dimensions including socioeconomic and natural pressures, nonpoint pollution export, river water quality and management responses with the pressure-state-impact-response (PSIR) framework. Canonical correlation analysis (CCA) and variance partitioning analysis (VPA) were integrated to further quantify the inter-relationships among the variables of each PSIR index. An obstacle degree model was applied to examine the factors of mainly affecting the status of watershed health. The results showed that phosphorus, nitrogen and sediment exports of CLW increased more and river water quality in CLW worsened due to socioeconomic and natural pressures. Water quality improvement effectively responds to increasing woodland and grassland. Compared with natural factors, phosphorus, nitrogen and sediment exports had closer relationships with the pressures from socioeconomic activities. Moreover, socioeconomic pressures explained more changes in phosphorus and nitrogen exports, while natural factors explained relatively more changes in sediment exports. Phosphorus, nitrogen and sediment exports and woodland and grassland coverage explained <35 % of the variation in river water quality. Additionally, the obstacle degrees of pressures and phosphorus, nitrogen and sediment exports were lower, and the obstacle degrees of river water quality and woodland and grassland coverage were higher in urban sub-watersheds, which was the opposite in agricultural sub-watersheds. This research provides a new evaluation framework of watershed health and its obstacle factors, which is crucial to improve watershed health." @default.
• W4288045677 created "2022-07-27" @default.
• W4288045677 creator A5004491983 @default.
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• W4288045677 creator A5038735935 @default.
• W4288045677 creator A5069915147 @default.
• W4288045677 date "2022-11-01" @default.
• W4288045677 modified "2023-10-17" @default.
• W4288045677 title "Watershed health assessment using the coupled integrated multistatistic analyses and PSIR framework" @default.
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• W4288045677 doi "https://doi.org/10.1016/j.scitotenv.2022.157523" @default.
• W4288045677 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35905965" @default.
• W4288045677 hasPublicationYear "2022" @default.
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