The driving force of basin water resource utilization to lake nutrients |
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| Authors: | Jiayu Peng Xing Wang Minghao Wang |
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| Institution: | 1. National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing, China;2. College of Water Science, Beijing Normal University, Beijing, China;3. College of Environment, Tsinghua University, Beijing, China |
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| Abstract: | ABSTRACTUnderstanding of the effect of basin water resources utilization on lake nutrients is helpful to prevent lake eutrophication and facilitate sustainable water resources management. In this study, a lake basin dualistic water cycle system is established to identify the environmental effect of lake water. Four water utilization indicators were chosen to build a driving relationship with the lake nutrients. Three different trophic lakes in Yunnan Province, China – Dianchi, Erhai and Fuxian – were selected to demonstrate the changes in basin water utilization, runoff, nutrient loads and water-use indicators for the period 2000–2015. In addition, the driving forces of water-use indicators to nutrients (total nitrogen and total phosphorus) were analysed by a general additive model. Finally, an optimized water utilization system for each lake basin is proposed. The research provides a practical tool for water resources and environmental management in lake basins. |
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| Keywords: | dualistic water cycle system analysis representative water utilization indicators generalized additive models driving analysis optimized water utilization |
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