NDVI spatial pattern and its differentiation on the Mongolian Plateau Zhang, Xueyan ; Hu, Yunfeng ; Zhuang, Dafang ; Qi, Yongqing ; Ma, Xin Abstract Publication: Journal of Geographical Sciences Pub Date: August 2009 DOI: 10.1007/s11442-009-0403-7 Bibcode: 2009JGSci..19..403Z