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[1]LI Shun-jiang,HU Xia,LIU Lian-you.The Effect of Cultivation on Soil Aggregates and SOC in Degraded Sandy Grassland of Farming-Grazing Transition Zone[J].Research of Soil and Water Conservation,2011,18(04):150-152.

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The Effect of Cultivation on Soil Aggregates and SOC in Degraded Sandy Grassland of Farming-Grazing Transition Zone

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 04 Page number: 150-152 Column: Public date: 2011-08-20

Title:: The Effect of Cultivation on Soil Aggregates and SOC in Degraded Sandy Grassland of Farming-Grazing Transition Zone

Author(s):: LI Shun-jiang¹, HU Xia^2,3, LIU Lian-you^2,3; 1. Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture andForestry Sciences, Beijing 100097, China;
2. Key Laboratory of Environment Changeand Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China;
3. College of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing 100875, China

Keywords:: cultivation; sandy grassland; mechanical composition; SOC

CLC:: S152.3;S153.6⁺21

DOI:: -

Abstract:: Cultivation is the other factor influencing grassland soil degradation. Soil structure could be changed by cultivation. And contents of clay and silt would be decreased greatly, and the particles of 0.002～0.02 mm and<0.002 mm increased obviously. With ages of cultivation, soil structure would evolve to be coarse. When cultivated grassland was transformed to forest land, the particles of<0.002 mm in the 0-2 cm and 2-4 cm layers increase. Moreover, soil fertility was decreased greatly, such as depletion of soil organic constituents. In addition, the loss rate of SOC was also accelerated by cultivation. The change of soil structure of the cultiveated grassland can indicate the extent of destruction of soil structure due to cultivation and erosion.

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