摘要
在野外采样、室内分析和前人研究资料的基础上,对我国不同地带沙地盐分状况及其分异规律、盐分含量与气象要素的关系、沙地植被对土壤盐分淋溶的影响等方面进行了探讨.
According to the results which use PCA and hierachical clustering to analyse salt content of drifting sand, 12 sandlands (sandy deserts) of our country are devided into 4 types of salt leaching sandland, i.e. strong leaching, leaching, weak leaching and non-leaching. Analysis shows that the ratio of evaporation to precipitation is a key factor that affect the salt status of sandland, rather than air temperatrue. Existence of vegetation can weaken salt leaching to different extent in each natural zone.
出处
《地理科学》
CSSCI
CSCD
北大核心
1995年第4期315-320,共6页
Scientia Geographica Sinica
关键词
沙地
盐分
植被
气象要素
Salts of sandland
Vegetation
Meteorological factors
