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
出处
《水土保持研究》
CSCD
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
关键词
子午岭林区
植被破坏
侵蚀产沙
时空变化
the Ziwuling forest area
vagetation destruction byhuman
erosion and yiecd sediment
temperal and spatial Change
