非点源污染模拟的空间分割优化

被引:7
作者
胡远安
程声通
贾海峰
机构
[1] 清华大学环境科学与工程系环境模拟与污染控制国家重点联合试验室
[2] 清华大学环境科学与工程系环境模拟与污染控制国家重点联合试验室 北京
[3] 北京
关键词
非点源污染; 分散参数模型; 地统计学; 自相关;
D O I
10.16511/j.cnki.qhdxxb.2005.03.021
中图分类号
X501 [环境污染源];
学科分类号
071012 ; 0713 ; 083002 ;
摘要
以水土评价模型SWAT在芦溪小流域的应用为例,讨论不同支持数据下模型计算结果与空间分割响应关系。结果表明,空间分割的持续细化并不能够持续地改善计算结果。利用地统计学工具对不同支持数据下研究区域的空间变异进行定量评价,并与SWAT模型输出空间分割的响应曲线对照,可以得出:研究区域的空间自相关尺度是确定合理的空间分割程度的一个关键依据。合理的子流域面积特征尺度A应当在空间自相关尺度L的1/2~1/3之间。
引用
收藏
页码:367 / 370
页数:4
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