InstituteofAridEcologyandEnvironment;
XinjiangUniversity;
Urumqi830046;
P.R.China;
XinjiangKeyLaboratoryofOasisEcology;
XinfiangUniversity;
Urumqi830046;
P.R.China;
InternationalCenterforDesertAttairs-researchforSustainableDevelopmentinAridandSemi-airdLand;
Urumqi830046;
P.R.China;