3Bray J R. 1963. Root production and the estimation of net productivity. Canadian Journal of Botany, 41 : 65 - 72.
4Brown S L, Schroeder P E. 1999. Spatial patterns of aboveground production and mortality of woody biomass for eastern U.S. forests. Ecological Applications, 9 : 968 - 980.
5Brown S, Lugo A E. 1984. Biomass of tropical forests: a new estimate based on forest volumes. Science, 233: 1290- 1293.
6Brown S. 1997. Estimating biomass and biomass change of tropical forests: a primer. [EB/OL]. [2005 - 03 - 23]. http: //www. fao. org/docrep/ w4095e/w4095e00. htm.
7Cairns M A, Brown S, Helmer E H, et al. 1997. Root biomass allocation in the world' s upland forests. Oecologia, 111 : 1 - 11.
8Chhabra A, Palria S, Dadhwal V K. 2002. Growing stock-based forest biomass estimate for India. Biomass and Bioenergy, 22:187 - 194.
9de Wit H A, Palosuo T, Hylen G, et al. 2006. A carbon budget of forest biomass and soils in southeast Norway calculated using a widely applicable method. Forest Ecology and Management, 225( 1 - 3) : 15 - 26.
10Fang J Y, Chen A P, Pang C H, et al. 2001. Changes in forest biomass carbon storage in China between 1949 and 1998. Science, 291 : 2320 - 2322.