Soil Grain Features Under Rocky Desertification in the Guizhou Karst Mountain Area

Peng Qin; Lin Changhu; He Tengbing

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Soil Grain Features Under Rocky Desertification in the Guizhou Karst Mountain Area

- Soil Grain Features Under Rocky Desertification in the Guizhou Karst Mountain Area
- Bulletin of Soiland Water Conservation Vol. 26, Issue 2, Pages: 29-32(2007)
- 作者机构：
  
  1. 贵州大学生命科学院,贵州,贵阳,550025
  2. 贵州科学院,贵州,贵阳,550001
- 作者简介：
- 基金信息：
- DOI：
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- Published：2007
- 稿件说明：
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Peng Qin, Lin Changhu, He Tengbing. Soil Grain Features Under Rocky Desertification in the Guizhou Karst Mountain Area[J]. Bulletin of Soiland Water Conservation, 2007, 26(2): 29-32.
DOI：

Peng Qin, Lin Changhu, He Tengbing. Soil Grain Features Under Rocky Desertification in the Guizhou Karst Mountain Area[J]. Bulletin of Soiland Water Conservation, 2007, 26(2): 29-32. DOI：

摘要

对贵州喀斯特山区不同石漠化等级土壤粒级进行了研究。结果表明

在贵州省喀斯特山区不同石漠化等级土壤垂直断面(A-B-C)<0.001mm黏粒增加;0.01～0.05mm

0.05～0.25mm细砂粒和0.25～1mm粗砂粒减少。随着石漠化程度增强土壤表层(0-20mm)黏粒含量减少

砂粒增加。在贵州省西部地区

<0.005mm的土粒随着石漠化程度的加剧含量减少。不同石漠化等级中<0.005mm土粒与有机质成极显著正相关关系

相关系数为0.95;0.05～1mm土粒与有机质成显著负相关关系

Abstract

Soil mechanical composition in the karst area of rocky desertification

Guizhou Province was studied.Results show that with rocky desertification intensified

the content of clay decreased

and the content of sand increased.In the sol profile (A -B -C)

clay (smaller than 0.001 mm)g radually increased with depth

whereas sand(in the ranges of 0.01～0.05mm

0.05～0.25mm and 0.25～1mm)gradually decreased.Within the surface layer (0～20mm)

the amount of sand decreased

and the amount of clay increased.The content of clay decreased in west part of the area as well.The correlation between the content of clay and organic matter was significantly positive with the correlation coefficient being 0.95.On the contrary

the correlation between sand and organic matter was significantly negative with the correlation coefficient being 0.63.

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