|Table of Contents|

Variation of Physical Parameters of Soil Under Different Rocky Desertification in Karst Region, Southwest China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2010年第02期
Page:
195-199
Research Field:
水资源与环境
Publishing date:

Info

Title:
Variation of Physical Parameters of Soil Under Different Rocky Desertification in Karst Region, Southwest China
Author(s):
ZHOU Lian-chuan1;  CHEN Xiao-min1;  LI Xiao-liang1; 2;  YANG Xin-qiang1;  XIA Wen1;  CUI Chen1
(1.School of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China; 2.School of Plant Sciences, Anhui Science and Technology University, Fengyang 233100, Anhui,China)
Keywords:
Karst region;  rocky desertification;  physical parameters;  variation;  organic matter;  soil structure
PACS:
X833;S151
DOI:
-
Abstract:
In order to explore the variation of soil physical properties under rocky desertification, the physical parameters of soil collected in Libo and Puding Counties of Guizhou Province were studied by means of field sampling and indoor analysis. The result showed that: content of soil organic matter decreased with serious rocky desertification; bulk density of soil(only 6.15 N/cm3), which did not degrade, increased and soil porosity decreased with serious rocky desertification; content of soil clay particles rose because of serious rocky desertification; content of water-stable aggregates and coefficient of soil structure decreased with serious rocky desertification; correlation coefficients among content of soil organic matter, sandy particles and water-stable aggregates(>5 mm)and soil structure index were extremely significant, and the values were -0.921 2, 0.827 7, 0.907 2 and 0.899 3, respectively. Enhancing content of soil organic matter with forest conservation was an effective way to prevent rocky desertification and to improve soil physical properties in Karst region.

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Last Update: 2010-06-20