【序号】: 1 【作者】: Yanyan Yu 【题名】:Spatial changes in soil organic carbon density and storage of cultivated soils in China from 1980 to 2000 【期刊】: Global Biogeochem. Cycles 【年、卷、期、起止页码】:GB2021, doi:10.1029/2008GB003428. 【全文链接】:http://www.agu.org/pubs/crossref/2009/2008GB003428.shtml