北京市红门川流域径流对防护林结构变化的响应
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国家"十一五"科技支撑计划项目"华北土石山区中尺度流域防护林体系优化配置"(2006BAD03A0201)


Response of Runoff to Changes of Shelter Forest Structure in Hongmenchuan Basin of Beijing City
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    摘要:

    根据红门川流域原有1∶1万土地利用图,结合流域1990,1995,2000和2005年共4期遥感影像,在GIS支持下,得到4期土地利用图,采用ArcView景观分析软件,得到防护林的空间格局变化情况。同时利用红门川流域1990—2006年逐日径流量的资料,研究了防护林空间格局变化与径流量的响应关系。结果表明,红门川流域防护林总面积和各森林类型面积方面均没有明显变化,防护林主要以乔木林为主,占防护林总面积的80%以上。在年降水量没有明显变化的基础上,红门川流域的径流量由1990年的3.00×107m3减少到2005年后的1.00×107m3以下,主要是防护林发挥了削洪减洪的功能。但是从研究结果来看,还不能准确得到防护林结构变化对径流产生重要影响的结论。

    Abstract:

    The research work is based on the original landuse map (1:10 000) of Hongmenchuan basin and combined with remote sensing images of the basin in 1990,1995,2000,and 2005. Landuse maps of the four periods were made with the support of GIS software and the change in the spatial pattern of shelter was found with the help of ArcView. At the same time,using the data of daily runoff of Hongmenchuan basin from 1990 to 2006,the response relationship between the change in the structure of shelter forest and the local runoff was studied. Results showed that the total area of shelter forest and the areas of various forest types did not change obviously. Shelter forest was dominated by highwood,accounting for more than 80%. With a little change of precipitation,annual runoff had a declined tendency from 3.00×107 m3 in 1990 to less than 1.00×107 m3 after 2000. The main reason was that shelter forest had played a role in flood reduction. However,the conclusion that the structure change of shelter forest had exerted an important influence on runoff can not be reached at present.

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朱丽,秦富仓,姚云峰.北京市红门川流域径流对防护林结构变化的响应[J].水土保持通报,2010,(4):63-67

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  • 收稿日期:2009-11-02
  • 最后修改日期:2010-01-29
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  • 在线发布日期: 2014-11-26
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