Uncertainty analyses on the calculation of water environmental capacity by an innovative holistic method and its application to the Dongjiang River |
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| Authors: | Qiuwen Chen Qibin Wang Zhijie Li and Ruonan Li |
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| Institution: | Center for Eco-Environmental Research, Nanjing Hydraulic Research Institute, Nanjing 210029, China;State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of sciences, Beijing 100085, China;State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of sciences, Beijing 100085, China;State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of sciences, Beijing 100085, China;State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of sciences, Beijing 100085, China |
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| Abstract: | The estimation and allocation of water environmental capacity (WEC) are essential to water quality management and social-economic interests. However, there is inevitable uncertainty in the capacity estimation due to model conceptualization, data collection and parameter calibration. An innovative holistic approach was developed, which took both independence and relevance between parameters into account to analyze the uncertainties in WEC calculation and estimate the margin of safety. The Dongjiang River was taken as the case to demonstrate the method, focusing on the chemical oxygen demand and NH4+-N thatwere the two major water quality problems in the river. The results showed that the proposed holistic approach is very promising and applicable compared to traditional methods of uncertainty analysis. |
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| Keywords: | Water environmental capacity Model uncertainty Holistic approach Dongjiang River |
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