Content and densities of soil organic carbon in urban soil in different function districts of Kaifeng |
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Authors: | Yanli Sun Jianhua Ma Can Li |
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Institution: | [1]Institute of Natural Resources and Environmental Science, Henan University, Kaifeng 475004, Henan China [2]Department of Urban and Environmental Science, Xuchang College, Xuchang 461000, Henan, China [3]Personnel Department, Luoyang Engineering College, Luoyang 471003, Henan, China |
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Abstract: | Urban soil, forming along with the development of city, has unique properties of soil organic carbon. On the basis of field
investigation and laboratory analysis, soil organic carbon (SOC) of Kaifeng city 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
suburbs. The order of SOC in topsoil was industrial district > recreational district > traffic district > cultural/educational
district > residential/administrative district. The density of soil organic carbon (SOCD) in both topsoil and profile followed
the orders of recreational district > industrial district > traffic district>cultural/educational district > residential/administrative
district, and cultural/educational district s>traffic district>industrial district>recreational district > administrative/residential
district, respectively. SOCD in both topsoil and profile decreased along the transection line from urban area to suburbs and
urban area had 2.53-fold more SOCD in topsoil and 1.56-fold more SOCD in profile than suburbs, respectively. SOC decreased
with the depth and was mainly distributed within the scope of 0–30 cm. The variances of SOC in urban area were more complicated
than that in suburbs. |
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Keywords: | Kaifeng city urban soil content of SOC SOCD |
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