子午岭林区的植被破坏与侵蚀产沙特点  

Characteristics of Vegetation Destruction by Human Beingand Soil Erosion and Yield Sediment in Ziwuling Forest Area

作　　者：王斌科[1] 唐克丽[1] 

机构地区：[1]中国科学院水利部西北水土保持研究所,陕西杨陵712100

出　　处：《水土保持研究》1993年第1期68-72,共5页Research of Soil and Water Conservation

基　　金：国家自然科学基金资助重大项目

摘　　要：从子午岭林区消长的历史过程出发,在分析讨论人为活动——植被变化——侵蚀产沙的基础上,应用野外调查和航片对比解译数据,分析研究了人为破坏植被的时空特点,主要方式及其与侵蚀产沙的关系,表明近期大规模人为植被破坏活动在时间上的阵性与人口增长、经营政策变化同步,植被破坏随地形部位的空间差异与加速侵蚀的发生演变密切相关,从而说明,人为破坏植被是造成森林林地面积减小的根本原因。In this paper,by analysing historical process of forest change and relation of human activities-vegetation change—ecologic response,using data from field work and contrast interpre- tation of airphoto,temperal and spatial distribution of manmade destroying forest and relationship between it and soil erosion are studied.The results have shown that manmade forest destruction is a principal factor to lead forest area decrease and ecologic environment worsening

关 键 词：子午岭林区 植被破坏 侵蚀产沙 时空变化 

分 类 号：S157[农业科学—土壤学]