| 2010年烟台沙漠学术研讨会论文选 |
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| Comparison of Soil Physical and Chemical Properties in the Desertification Process of Hulunbeier Sandy Land and Songnen Sandy Land |
| WANG Jin1, ZHOU Rui-lian1, ZHAO Ha-lin2, ZHAO Xue-yong2 |
| 1.College of Life Sciences, Ludong University, Yantai 264025, Shandong, China; 2.Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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Abstract The change in soil physical and chemical properties during the process of desertification were investigated in Songnen Sandy Land and Hulunbeier Sandy Land. The clay content, soil hardness, soil temperature, organic matter, total nutrients, soil moisture and salt content in the non-desertified grassland in Songnen Sandy Land were markedly higher than that in Hulunbeier Sandy Land, but the coarse sand content and soil bulk density in Songnen Sandy Land were significantly lower than that in Hulunbeier Sandy Land. With the development of desertification, an obvious decrease in contents of fine sand, sticky silt, soil moisture, soil salt, and soil hardness, organic carbon, total nutrient were observed in both Songnen Sandy Land and Hulunbeier Sandy Land. But the coarse soil content, soil temperature, soil bulk density increased significantly, and the change range in Songnen Sandy Land was higher than that in Hulunbeier Sandy Land. The physical and chemical characteristics of grassland soil were more easily impacted by desertification in Songnen Sandy Land than in Hulunbeier Sandy Land, and the main reason is that the original soil physical and chemical indices in Songnen Sandy Land were better than that in Hulunbeier Sandy Land.
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Received: 01 September 2010
Published: 20 March 2011
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2011, Vol. 31 
