Pedosphere 15(4): 417--423, 2005
ISSN 1002-0160/CN 32-1315/P
©2005 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Spatial characteristics of soil organic carbon storage in China’s croplands
WANG Shao-Qiang1, YU Gui-Rui1, ZHAO Qian-Jun1, NIU Dong1, CHEN Qing-Mei1 and WU Zhi-Feng2
1 Institute of Geographic Sciences and Natural Resources Research, Beijing 10010 (China). E-mail: sqwang@igsnrr.ac.cn
2 Guangdong Institute of Eco-Environment and Soil Science, Guangzhou 510650 (China)
ABSTRACT
      The soil organic carbon (SOC) pool is the largest component of terrestrial carbon pools. With the construction of a geographically referenced database taken from the second national general soil survey materials and based on 1546 typical cropland soil profiles, the paddy field and dryland SOC storage among quantified to characterize the spatial pattern of cropland SOC storage in China regions of China were systematically to examine the relationship between mean annual temperature, precipitation, soil texture features arid SOC content. In all regions, paddy soils had higher SOC storage than dryland soils, and cropland SOC content was the highest in Southwest China. Climate controlled the spatial distribution of SOC in both paddy and dryland soils, with SOC storage increasing with increasing precipitation and decreasing with increasing temperature.
Key Words:  carbon storage, cropland, soil organic carbon, spatial characteristics
Citation: Wang, S. Q., Yu, G. R., Zhao, Q. J., Niu, D., Chen, Q. M. and Wu, Z. F. 2005. Spatial characteristics of soil organic carbon storage in China’s croplands. Pedosphere. 15(4): 417-423.
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