地理科学

地理科学 ›› 1995, Vol. 15 ›› Issue (4): 315-320,393.doi: 10.13249/j.cnki.sgs.1995.04.315

• 论文 • 上一篇    下一篇

我国不同地带沙地盐分特征研究

赵文智, 荔克让, 何欣东   

  1. 中国科学院兰州沙漠研究所 兰州730000
  • 收稿日期:1994-03-31 修回日期:1995-01-28 出版日期:1995-07-20 发布日期:1995-07-20

THE STUDY ON SALT FEATURE OF SANDLAND IN DIFFERENT ZONES OF CHINA

Zhao Wenzhi, Li Kerang, He Xindong   

  1. Institute of Desert Research, Academia Sinica, Lanzhuo 730000
  • Received:1994-03-31 Revised:1995-01-28 Online:1995-07-20 Published:1995-07-20

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35 | 4

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.

Abstract: 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.