Key Lab of GIScience of the Ministry of Education;
East China Normal University;
Shanghai 200062;
China;
State Key Laboratory of Desert and Oasis Ecology;
Xinjiang Institute of Ecology and Geography;
CAS;
Urumqi 830002;
China;
Key Laboratory of Agricultural Water Resources;
Center for Agricultural Resources Research;
CAS;
Shijiazhuang 050021;
China;
Department of Geography;
University of Kansas;
Lawrence;
KS 66045;
USA;