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[1]LIU Shan-shan,GONG Yuan-bo,XIANG Xiang-yong,et al.Soil Organic Carbon and Distribution Characteristics of Carbon Fraction in Purple Soil in a Small Watershed of Ya’an Region[J].Research of Soil and Water Conservation,2012,19(03):63-66.

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Soil Organic Carbon and Distribution Characteristics of Carbon Fraction in Purple Soil in a Small Watershed of Ya’an Region

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 03 Page number: 63-66 Column: Public date: 2012-06-20

Title:: Soil Organic Carbon and Distribution Characteristics of Carbon Fraction in Purple Soil in a Small Watershed of Ya’an Region

Author(s):: LIU Shan-shan, GONG Yuan-bo, XIANG Xiang-yong, CHEN Man, YANG Mei; Sichuan Agricultural University, Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Ya’an, Sichuan 625014, China

Keywords:: soil organic carbon; carbon fraction; purple soil

CLC:: S153.6⁺2

DOI:: -

Abstract:: Heping watershed with purple soil in Ya’an region was taken as study area. Distribution characteristic of soil organic carbon was studied under different erosion intensities. The results indicated that soil erosion intensity reduced and soil organic carbon content increased gradually from up to down of the watershed. Difference among up, mid and down of the watershed was significant (P<0.05). Total soil organic carbon (SOC) and the carbon fraction content in the foot of slope was the highest on the same slope, that was followed by the top and mid of slope. SOC and carbon fraction content in shady slope were higher significantly than that in sunny slope. Soil total organic carbon and the carbon fraction content reduced gradually with the increase of soil depth. Investigation on spatial distribution of soil organic carbon has the the key guidance in terms of Project of Returning Farmland to Forests or Pastures.

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