摘要
根据 1 997— 1 998年对科尔沁沙地沙丘植被的实地调查 ,本文依据植物地理学、植物生态学的方法 ,对不同景观梯度带上沙丘植被的植物组成及其重要值等进行了分析 ,从而研究出该地区现阶段在风力水力侵蚀胁迫下的退化草原植被的空间分布格局 ,同时也说明植被的分布与大气降水所制约的水分梯度和风力侵蚀发展的沙漠化梯度有直接的关系。
Based on investigated information of dune vegetation in Kerqin Sandy Land during 1997-1998,the paper analyzes carefully the compositions of dune plants and their important value and so on in different landscape gradient belts according to the methods of Plant Geagraphy and Plant Ecology,and concludes the distribution pattern of veyetation on degenerate grassland under wind and water erosion at present.Meanwhile,the direct relations between the distribution of vegetation and the moisture gradient testricted by air precipitation and desertfication gradient developing by wind erosion are showed.
出处
《干旱区资源与环境》
CSSCI
CSCD
2000年第1期44-48,共5页
Journal of Arid Land Resources and Environment
基金
内蒙古自治区科委资助项目 !( 92 0 12 0- 2 )
关键词
科尔沁沙地
景观梯度
植被分布格局
Kerqin Sandy Land,landscape gradient,distribution pattern of vegetation.
