State Key Laboratory of Soil and Sustainable Agriculture;
Institute of Soil Science;
Chinese Academy of Sciences;
Nanjing 210008 (China);
Institute of Agricultural Resources and Regional Planning;
Chinese Academy of Agricultural Sciences;
Beijing 100081 (China);
Farm Technology Group;
Wageningen University;
P. O. Box 17;
6700 AA Wageningen (The Netherlands);
Soil Quality Group;
Wageningen University;
P.O.Box 8005;
6700 EC Wageningen (The Netherlands);