中国环境科学

作者：罗婧, 胡维平, 彭兆亮, 刘刚, 李茂兵, 郭西亚, 王艳平

单位：1. 中国科学院南京地理与湖泊研究所, 湖泊与流域水安全重点实验室, 江苏 南京 211135;2. 中国科学院南京地理与湖泊研究所, 湖泊与环境国家重点实验室, 江苏 南京 211135;3. 安徽省巢湖管理局, 安徽 巢湖 238000;4. 华设设计集团股份有限公司, 江苏 南京 210014;5. 江苏省环境工程技术有限公司, 江苏 南京 210019;6. 南通大学地理科学学院, 江苏 南通 226019

关键词：水环境容量,连续分箱模型,协调性分析,巢湖

基金：国家自然科学基金资助项目(41907158,42077426,42377451,42307074);长江生态环境保护修复联合研究(2022-LHYJ-02-0401)

Based on the continuous-binning uniform mixed water quality model, an approach for computing water environmental capacity for different functional regions of shallow lakes was established. The certainty and uncertainty of results were analyzed by statistical methods. Meteorological and hydrological data over multiple years was used to calculate water environmental capacity for each region of Lake Chaohu, and compatibility correction was made to the result of each area. More accurate results under different hydrological conditions and water quality targets of Lake Chaohu were obtained by calculating the value range and average value of water environmental capacity series, and analyzing the consistency among water environmental capacity, pollutant flux into the lake, the water quality target and water quality. The results suggest that the annual degradation coefficients of total nitrogen, total phosphorus, ammonia nitrogen and permanganate index of Chaohu Lake were 2.99, 1.94, 10.86, 0.36a-1, respectively. The water environmental capacity of the lake varies significantly under different hydrological conditions and water quality targets. The water environmental capacity exhibits decreasing trend with the decrease of water storage and stricter water quality targets. The approach proposed in this study shows high efficiency in calculating annual water environmental capacity under different hydrological conditions and water quality targets for shallow lakes, and can be used for providing guidelines for pollutants control in lakes.

来源：2024年第11期

《中国环境科学》期刊编辑部

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