7Pinder J E, Kroh G C, White J D, et al. The relation- ships between vegetation types and topography in Lassen Vocalnic National Park[J]. Plant Ecol. , 1997, 131:17-29.
8Jenny H. The soil resource:Origin and behavior[M]. New York : Springer-Verlag , 1980.
9Fang Jingyun, Wang G G, Liu Guohua, et al. Forest biomass of China: An estimate based on the biomass - volume relationship [ J ]. Ecological Applications, 1998,8:1084-1091.
10Fang Jingyun, Chen Anping, Peng Changhui, et al. Changes in forest biomass carbon storage in China between 1949 and 1998 [J]. Science, 2001,292 (5525) : 2320-2322.
