| 浙江省安吉县西部小流域非点源污染估算 |
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| 引用本文： | 张敏,刘庆生,刘高焕. 浙江省安吉县西部小流域非点源污染估算[J]. 资源科学, 2011, 33(2): 242-248 |
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| 作者姓名： | 张敏 刘庆生 刘高焕 |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室,北京,100101;中国科学院研究生院,北京,100049
2. 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室,北京,100101 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项课题：“太湖流域水生态功能分区与质量目标管理技术示范”(编号：2008ZX07526-007)。 |
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| 摘 要： | 本文以浙江省安吉县西部地区为例,以总氮作为污染评价指标,利用优化后的输出系数法估算非点源污染,并分析污染来源及特点,为相关研究和决策提供数据和理论支持。通过研究发现土地利用和降雨对流域NSP贡献最大,其次是农村人口和牲畜;土地利用中以竹林和耕地的非点源污染输出为主。就单位面积而言,耕地对非点源污染输出贡献比例最大,其次是园地、裸地、居民地、竹林、草地和林地。此外,不同的土地利用组合类型和比例对非点源污染输出也有着重要影响,总体规律是随着耕地和居民地比例的增加,其他林地比例的减少,污染输出增大。其中需要注意的是,"竹林-耕地-林地"混合类型比竹林单一土地利用类型的单位面积污染输出更小,由此推断在耕地中适当的载植林木可以有效的降低非点源污染的输出。
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| 关 键 词： | 小流域 非点源污染 总氮 土地利用结构 |
Investigating Non-point Source Pollution in the Western Region of Anji County, Zhejiang Province |
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| ZHANG Min,LIU Qingsheng and LIU Gaohuan. Investigating Non-point Source Pollution in the Western Region of Anji County, Zhejiang Province[J]. Resources Science, 2011, 33(2): 242-248 |
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| Authors: | ZHANG Min LIU Qingsheng LIU Gaohuan |
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| Affiliation: | State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Graduate University of Chinese Academic of Sciences, Beijing 100049, China;State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | Non-point source pollution(NSP) is one of the most important contributors to water quality deterioration.In the present paper,the authors investigated the NSP across western Anji County in Zhejiang Province using an improved export coefficient method in combination with the total nitrogen taken as a pollution assessment index,to estimate the pollution load of NSP occurring in every townships and the entire study area.We also analyzed the sources and characteristics of the pollution,with the aim to provide m... |
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| Keywords: | Small drainage area Non-point source pollution Total nitrogen Land use structure |
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