| 农业非点源污染的流域单元划分方法 |
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| 引用本文： | 张水龙,庄季屏. 农业非点源污染的流域单元划分方法[J]. 农业环境科学学报, 2001, 20(1): 34-37 |
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| 作者姓名： | 张水龙 庄季屏 |
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| 作者单位： | 1. 中国环境管理干部学院,
2. 中国科学院沈阳应用生态研究所, |
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| 摘 要： | 为了正确地认识不同尺度的农业非点源污染现象的特征 ,寻找不同尺度之间的联系规律 ,从流域的尺度效应、流域相似性以及流域的空间单元划分等方面进行了研究 ,提出一套兼顾尺度效应的以等级系统为基础的流域单元划分方法 ,同时以辽西下河套小流域为例 ,进行了具体的应用 ,进一步充实了农业非点源污染研究的方法论。
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| 关 键 词： | 农业非点源污染 流域 尺度效应 相似性 流域单元划分 |
| 文章编号： | 1000－0267(2001)01－0034－04 |
| 修稿时间： | 2000-03-11 |
A Method for Plotting Watershed Unit of Non-Point Source Pollution from Agriculture |
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| ZHANG Shui_long,ZHUANG Ji_ping. A Method for Plotting Watershed Unit of Non-Point Source Pollution from Agriculture[J]. Journal of Agro-Environment Science( J. Agro-Environ. Sci.), 2001, 20(1): 34-37 |
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| Authors: | ZHANG Shui_long ZHUANG Ji_ping |
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| Affiliation: | ZHANG Shui-long1,ZHUANG Ji-ping2 |
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| Abstract: | Non-point source pollution (NPS) from agriculture has been regarded as a complicated environmental problem. And one of its essential characteristics is spatial variability. In order to describe the characteristics and inherent relation, respectively at different scales, the present paper illustrated the effects, similarity and spatial unit division at watershed level, and developed a method for plotting watershed unit which is based on hierarchical system and took account of the scale effects. In taking Xiahetao watershed as a model, it has been indicated that the procedure could strengthen the methodology of non-point source pollution from agriculture. |
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| Keywords: | non-point pollution watershed scale effects similarity watershed unit division |
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