Normalized difference vegetation index dynamic change and its driving factor analysis with long time series in the Jinghe River watershed on the Loess Plateau of China
SUN Xiao-Peng, WANG Tian-Ming, KOU Xiao-Jun, GE Jian-Ping
Chin J Plant Ecol . 2012, (6): 511 -521 .  DOI: 10.3724/SP.J.1258.2012.00511