中国变性土和变性土性土壤的地理分布

本文在各种土壤调查报告和文献的基础上初步编绘了一份中国变性土及变性土性土壤分布图。这些土壤分布于十个不同的地区。参照《土壤系统分类制》(USDA,1975)的标准,变性土主要分布于河南西部的南阳盆地,淮北平原、山东半岛西部和北部平原,以及海南岛北部和雷州半岛等四个地区,而变性土性土壤则分布于其余六个地区。在长江流域各大潮盆地及其支流的粘重母质上,主要分布变性土性冲积潮新成土,它们地形上处于低洼地区,同时具水湿的土壤水分状况,因而不属于变性土。

GEOGRAPHICAL DISTRIBUTION OF VERTISOLS AND VERTIC SOILS IN CHINA

This paper deals with a preliminary map of Vertisols and Vertic soils in China, compiled on the basis of different soil survey reports and publications. The Vertisols and Vertic Soils are presented in ten different regions According to "Soil Taxonomy "(USDA,1975) various kinds of Vertisols are present mostly in the regions of Nanyang basin of the southwestern Henan province, the Huaihe River Plain, plain of western and northern Shandong Peninsula,the northern part of Hainan Island and the Leizhou Peninsula respectively. Different Vertie Soils are present in the othe, regions. In the region of big lake and their tributanes of the Yangtze River basins there are mostly Vertic Fluvaquents of different heavy clay parent materials. They are not classified as Vertisols because of their low-lying topogrophic position and aquic moisture regime of the soil.