Carbon uptake and change in net primary productivity of oasis-desert ecosystem in arid western China with remote sensing technique
ZHANG Jie, PAN Xiaoling, GAO Zhiqiang, SHI Qingdong, LV Guanghui
Journal of Geographical Sciences . 2006, (3): 315 -325 .  DOI: 10.1007/s11442-006-0307-8