Regular Article
A China data set of soil properties for land surface modeling
Article first published online: 6 MAY 2013
DOI: 10.1002/jame.20026
©2013. American Geophysical Union. All Rights Reserved.
Issue
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Journal of Advances in Modeling Earth Systems
Early View (Online Version of Record published before inclusion in an issue)
Additional Information
How to Cite
et al. (2013), A China data set of soil properties for land surface modeling, J. Adv. Model. Earth Syst., 5, doi:10.1002/jame.20026.
Publication History
- Article first published online: 6 MAY 2013
- Accepted manuscript online: 12 MAR 2013 11:58AM EST
- Manuscript Accepted: 7 MAR 2013
- Manuscript Revised: 18 FEB 2013
- Manuscript Received: 20 OCT 2012
Funded by
- Natural Science Foundation of China . Grant Numbers: 41205037 , 40875062 , 40225013
- R&D Special Fund for Nonprofit Industry . Grant Numbers: GYHY201206013 , GYHY200706025
- Key International S and T Cooperation Project . Grant Number: 2008DFA22180
Keywords:
- land surface modeling;
- soil attribute database;
- soil polygon linkage;
- china soil characteristics data set
[2] A comprehensive 30×30 arc-second resolution gridded soil characteristics data set of China has been developed for use in the land surface modeling. It includes physical and chemical attributes of soils derived from 8979 soil profiles and the Soil Map of China (1:1,000,000). We used the polygon linkage method to derive the spatial distribution of soil properties. The profile attribute database and soil map are linked under the framework of the Genetic Soil Classification of China which avoids uncertainty in taxon referencing. Quality control information (i.e., sample size, soil classification level, linkage level, search radius and texture) is included to provide “confidence” information for the derived soil parameters. The data set includes 28 attributes for 8 vertical layers at the spatial resolution of 30×30 arc-seconds. Based on this data set, the estimated storage of soil organic carbon in the upper 1 m of soil is 72.5 Pg, total N is 6.6 Pg, total P is 4.5 Pg, total K is 169.9 Pg, alkali-hydrolysable N is 0.55 Pg, available P is 0.03 Pg, and available K is 0.61 Pg. These estimates are reasonable compared with previous studies. The distributions of soil properties are consistent with common knowledge of Chinese soil scientists and the spatial variations over large areas are well represented. The data set can be incorporated into land models to better represent the role of soils in hydrological and biogeochemical cycles in China.

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