| 沙漠与沙漠化 |
|
|
|
|
| Soil Characteristics Changes in Desertification Processes in Hunshandake Sandy Land, Northern China |
| LIU Shu-lin, WANG Tao, QU Jian-jun |
| Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
|
|
|
|
Abstract Soil spatial heterogeneity is very huge in Hunshandake Sandy Land. Soil grain size on shifting dunes and soil nutrient content on non-desertified lands exist very obvious difference. With the development of land desertification, a coarse sands accumulation layer often formed in the surface of soil, and the content of soil organic carbon (SOC) and the total Nitrogen (TN) both decrease obviously. Moreover, the content of SOC has bigger spatial difference than the content of TN. With the increase of desertification severity, the content of SOC decreases much faster than the content of TN, causing the ratio of C and N decrease obviously. There are close correlation between the content of SOC, the content of TN and the clay particles content in top soil layers of desertified lands. Soil wind erosion is the main driving factor of soil developing process in land desertification, and it seriously affect the soil stability, the transfer of soil fine material composition and nutrient.
|
|
Received: 19 July 2007
Published: 20 July 2008
|
|
|
[1]王涛.中国沙漠和沙漠化土地[M].石家庄:河北科技出版社, 2003:1-34.
[2]乌兰图雅,阿拉腾图雅,长安,等.遥感、GIS支持下的浑善达克沙漠化土地最新特征分析[J].内蒙古师大学报:自然科学(汉文)版,2001,30(4):356-360.
[3]武健伟,赵廷宁,鲁瑞洁.浑善达克沙地现代土地沙漠化发展动态与成因分析[J].中国水土保持科学,2003,1(4):36-40.
[4]刘树林,王涛.浑善达克沙地地区土地沙漠化初步研究[J].水土保持学报,2004,18(5):99-103.
[5]王涛,陈广庭,钱正安,等.中国北方沙尘暴现状及对策[J].中国沙漠,2001,21(4):322-327.
[6]王涛,陈广庭,赵哈林,等.中国北方沙漠化过程及其防治研究的新进展[J].中国沙漠,2006,26(4):507-516.
[7]苏永忠,赵哈林.土壤有机碳储量、影响因素及其环境效应的研究进展[J].中国沙漠,2002,22(3):220-228.
[8]李玉强,赵哈林,赵学勇,等.科尔沁沙地沙漠化过程中土壤碳氮特征分析[J].水土保持学报,2005,19(5):73-76.
[9]付华,王彦荣,吴彩霞,等.放牧对阿拉善荒漠草地土壤性状的影响[J].中国沙漠,2002,22(4):339-343.
[10]刘颖茹,杨持,朱志梅,等.我国北方草原沙漠化过程中土壤碳、氮变化规律研究[J].应用生态学报, 2004, 15(9):1604-1606.
[11]刘树林,王涛,郭坚.浑善达克沙地春季风沙活动特征观测研究[J].中国沙漠,2006,26(3):356-361. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2008, Vol. 28 
