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《Scientia Geographica Sinica》 2009-01
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Contents and Densities of Soil Organic Carbon in Urban Soils in Different Function Areas of Kaifeng

SUN Yan-li1,2,MA Jian-hua1,LI Can3 (1.Institute of Natural Resources and Environmental Science,Henan University,Kaifeng,Henan 475004;2.Department of Urban and Enviornmental Science,Xuchang College,Xuchang,Henan 461000;3.Personnel Department,Luoyang Engineering College,Luoyang,Henan 471003)  
Urban soil,a special soil type,forming along with the development of city,has unique properties of soil organic carbon.On the basis of field investigation and laboratory analysis,the soil organic carbon(SOC)of Kaifeng City,Henan Province was studied,and the results showed that the characteristics of SOC were different not only among function districts in urban area,but also between urban area and suburb.The contents of SOC in topsoil followed the order of industrial district recreational district traffic district cultural and educational district administrative and residential district.The orders of densities of soil organic carbon(SOCD) in topsoil and profile were recreational district industrial district traffic district cultural and educational district administrative and residential district,and cultural and educational district traffic district industrial district recreational district administrative and residential district,respectively.SOCD in topsoil and profile decreased along the transection line from urban area to suburb,and urban area had 2.53-fold more SOCD in topsoil and 1.56-fold more SOCD in profile than suburb,respectively.SOC decreased with the depth and was mainly distributed within the scope of 0-30 cm.
【Fund】: 河南省重点科技攻关项目(72102150029)资助
【CateGory Index】: S153.6
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