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Estimation of soil organic carbon reservoir in China

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Abstract

The paper respectively adopted physio-chemical properties of every soil stratum from 2473 soil profiles of the second national soil survey. The corresponding carbon content of soils is estimated by utilizing conversion coefficient 0.58. In the second soil survey, the total amount of soil organic carbon is about 924.18xl08t and carbon density is about 10.53 kgC/m2 in China according to the area of 877.63x106hm2 surveyed throughout the country. The spatial distribution characteristics of soil organic carbon in China is that the carbon storage increases when latitude increases in eastern China and the carbon storage decreases when longitude reduces in northern China. A transitional zone with great variation in carbon storage exists. Moreover, there is an increasing tendency of carbon density with decrease of latitude in western China. Soil circle is of great significance to global change, but with substantial difference in soil spatial distribution throughout the country. Because the structure of soil is inhomogeneous, it could bring some mistakes in estimating soil carbon reservoirs. It is necessary to farther resolve soil respiration and organic matter conversion and other questions by developing uniform and normal methods of measurement and sampling.

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Authors and Affiliations

  1. The State Key Laboratory of Resources and Environment Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, 100101, Beijing, China

    Wang Shao-qiang, Zhou Cheng-hu, Li Ke-rang & Huang Fang-hong

  2. Institute of Environment Science, Beijing Normal University, 100875, Beijing, China

    Zhu Song-li

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  1. Wang Shao-qiang
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  2. Zhou Cheng-hu
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  3. Li Ke-rang
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  4. Zhu Song-li
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  5. Huang Fang-hong
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Shao-qiang, W., Cheng-hu, Z., Ke-rang, L. et al. Estimation of soil organic carbon reservoir in China. J. Geogr. Sci. 11, 3–13 (2001). https://doi.org/10.1007/BF02837371

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  • DOI: https://doi.org/10.1007/BF02837371

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