7Moulin S,Bondeau A,DelecolIe R. Combining agricultural crop mod-els and satellite observations : From field to regional scales [ J ]. In-ternational Journal of Remote Sensing, 1998,19(6) : 1021 - 1036.
8Schultz P A, Halpert M S. Global analysis of the relationshipsamong a vegetation index,precipitation and landsurface tempera-ture [J]. International Journal of Remote Sensing, 1995 ,16 (15 ):2755 -2777.
9Piao S L,Fang J Y, Ji W,et al. Variation in a satellite - based veg-etation index in relation to climate in China[J]. Journal of Vegeta-tion Science, 2004,15 : 219 - 226.
10Wang J, Rich P M, Price K P. Temporal responses of NDVI to pre-cipitation and temperature in the central Great Plains,USA[J]. In-ternational Journal of Remote Sensing, 2003,24 ( 11 ) : 2345 -2364.