北京市怀柔水库集水区径流与防护林结构变化响应研究  

Research on the Changes of Runoff and Protection Forest Structure in Huairou Reservoir Watershed of Beijing

作　　者：朱丽[1,2] 秦富仓[1] 姚云峰[1] 余新晓[3] 

机构地区：[1]内蒙古农业大学生态环境学院,呼和浩特010019 [2]包头师范学院资源与环境科学系,包头001403 [3]北京林业大学水土保持学院,北京100086

出　　处：《水土保持研究》2009年第3期143-147,共5页Research of Soil and Water Conservation

基　　金：国家“十一五”科技计划课题(2006BAD03A0201)

摘　　要：利用北京市怀柔水库集水区1990年、1995年和2000年三期遥感影像,采用ArcView景观分析软件,得到防护林的空间格局变化情况。同时利用怀柔水库集水区1990-2006年逐日径流量的资料,研究防护林空间格局变化与当地径流量的响应关系。结果表明:怀柔水库集水区防护林在总面积方面没有明显变化,但不同林种面积变化明显,由灌木林为主逐步演变为以乔木林为主。当地降水量变化不大的基础上,年径流量有明显减少的趋势,其主要原因是防护林格局的变化,防护林系统的不断完善。随着防护林功能的发挥,2000年后研究区的径流量减少到1990年的5%,径流量逐年减少并呈现稳定的趋势。Using remote sensing images of Huairou Reservoir Watershed of Beijing in 1990, 1995 and 2000, with the help of ArcView, the change of spatial pattern of protection forest was obtained. At the same time, using the data of daily unoff of Huairou Reservoir Watershed in 1990-2006, the response relation between the change of the structure of protection forest and the local runoff was studied. The results showed that. the total area of protection forest had not changed obviously, but there were significant changes in the areas of various kinds of forest, from dominated by shrub to dominated by highwood. On the basis of the little change of the precipitation, the annual runoff had a tendency to reduce, the main reasons were the changes of the pattern of protection forest and the constant perfection of shelter-forest system. With the functions of protection forest played, after the year of 2000, the runoff decreased to 5 % of the 1990＇s, the runoff decreased year by year and had a steady trend.

关 键 词：防护林 景观格局 径流变化 

分 类 号：TV697.2[水利工程—水利水电工程] S727.2[农业科学—林木遗传育种]