TY - Journal of Geographical Sciences A1 - WANG Liwen, WEI Yaxing, NIU Zheng T1 - Spatial and temporal variations of vegetation in Qinghai Province based on satellite data Y1 - 2008-02-25 00:00:00.0 JF - Journal of Geographical Sciences JO - Journal of Geographical Sciences SP - 73 EP - 84 VL - 18 IS - 1 UR - {https://www.geogsci.com/EN/10.1007/s11442-008-0073-x} N1 - 10.1007/s11442-008-0073-x ER -