4Townshend J G R. Global data sets for land application from Advanced Very High Resolution Radiometer: an introduction. International Journal of Remote Sensing, 1994, 15:3319 - 3332.
5Pan Y, Li X, Gong P, et al. An integrative classification of vegetation in China based on NOAA/AVHRR and vegetation-climate indices of the Holdridge life zone. International Journal of Remote Sensing, 2003, 24(5): 1009-1027.
6Loveland T R, Merchant J W, Ohlen D O,et al. Development of a land cover characteristics database for the conterminous U.S. Photogrammetric Engineering and Remote Sensing, 1991, 57:1453-1463.
7Henderson-Sellers A, Gornitz V. Possible climate impacts of land cover transformations, with particular emphasis on tropical defores tation. Climatic Change, 1984, 6:231-258.
8Dickinson R E, Henderson-Sellers A. Modeling tropical deforestation: A study of GCM land-surface parameterizations. Quart. J. Roy. Meteor. Soc., 1988, 114:439-462.
9Charney J G. Dynamics of deserts and drought in the Sahel. Quart.J. R. Meteor. Soc.,1975,101(428):193- 202.