| 洞庭湖平原堤垸区非点源污染模拟与分析 |
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| 引用本文： | 王婷婷,唐莉华,刘军.洞庭湖平原堤垸区非点源污染模拟与分析[J].水力发电学报,2011,30(5). |
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| 作者姓名： | 王婷婷 唐莉华 刘军 |
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| 作者单位： | 清华大学水利水电工程系水沙科学与水利水电工程国家重点实验室,北京,100084 |
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| 基金项目： | 水利部公益性行业专项科研经费项目(200801008) |
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| 摘 要： | 洞庭湖是我国的第二大淡水湖,近年来出现了水环境质量下降及富营养化等污染问题,非点源污染已成为其主要污染源。本研究在洞庭湖平原堤垸地区建立了分布式非点源污染负荷模型,对洞庭湖平原堤垸地区的非点源氮磷污染负荷的产生量及入河量进行了估算,并对研究区内氮磷污染负荷的流失规律及时空分布特征进行了分析研究。模拟及分析表明,堤垸地区非点源污染负荷以溶解态污染物为主,汛期污染负荷产生量约占年总量的75%;农田径流所产生的氮磷污染物占总量的70%左右,畜禽养殖的贡献率次之;非点源污染负荷的入河系数约为0.7。研究结果可为今后洞庭湖区水环境保护与治理提供参考。
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| 关 键 词： | 环境水利 氮磷污染负荷 非点源污染 平原堤垸区 洞庭湖 |
Simulation and analysis of non-point source pollution in the polder region of Dongting Lake |
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| WANG Tingting,TANG Lihua,LIU Jun.Simulation and analysis of non-point source pollution in the polder region of Dongting Lake[J].Journal of Hydroelectric Engineering,2011,30(5). |
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| Authors: | WANG Tingting TANG Lihua LIU Jun |
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| Affiliation: | WANG Tingting,TANG Lihua,LIU Jun(State Key Laboratory of Hydroscience and Hydraulic Engineering,Department of Hydraulic Engineering,Tsinghua University,Beijing 100084) |
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| Abstract: | Dongting Lake,the second largest freshwater lake in China,is recently subjected to a trend of deterioration of water quality and eutrophication problem,and non-point source pollution has become a major source of its water pollution.In this paper,a distributed non-point source pollution model is developed to estimate the load and discharge amounts of such nitrogen and phosphorus sources in the Dongting polder region,and the causes and the spatial and temporal distribution of such sources over the study area ... |
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| Keywords: | environment water conservancy nitrogen and phosphorus pollution non-point source pollution polder region Dongting Lake |
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