当前位置： 首页»科研成果» 2013 A China data set of soil properties for land surface modeling 上官微、戴永久、段青云、纪多颖、叶爱中、梁晓、缪驰远

 

Wei Shangguan,¹ Yongjiu Dai,¹ Baoyuan Liu,² Axing Zhu,³ Qingyun Duan,¹ Lizong Wu,⁴ Duoying Ji,¹ Aizhong Ye,¹ Hua Yuan,² Qian Zhang,² Dongdong Chen,² Ming Chen,² Jianting Chu,² Youjun Dou,² Jianxia Guo,² Haiqin Li,² Junjia Li,² Lu Liang,² Xiao Liang,¹ Heping Liu,² Shuyan Liu,² Chiyuan Miao,¹ and Yizhou Zhang²

 

¹College of Global Change and Earth System Science, Beijing Normal University, Beijing, China.

²School of Geography, Beijing Normal University, Beijing, China.

³Department of Geography, University of Wisconsin, Madison, Wisconsin, USA.

 

⁴Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China.

 

ABSTRACT

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.

 

KEY WORDS: land surface modeling; soil attribute database; soil polygon linkage; china soil characteristics data set

 

PUBLISHED BY: JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS, 2013, 5 (2): 212-224.

 

DOWNLOAD PDF: http://onlinelibrary.wiley.com/doi/10.1002/jame.20026/pdf