3Armstrong,Jones A T,Tubby I.Effects of spacing and cutting cycle on the yield of poplar grown as an energy crop[J].Biomass and Bioenergy,1999(17):305-314.
4Kopp R F,White E H,Abrahamson L P,et al.WiHow biomass trials in central New York State[J].Bionmss and Bioenergy,1993,5(2):179-187.
6Christersson L,Sennerhy-Forsse L.Willow and poplar research and plantations in Swedn today[J].Swedish Unversity of Agricultural Sciences,1995,28(2):62-67.
7Granhall U.Biological fertilization[J].Biomass and Bioenergy,1994.6(1/2):81-91.
9Larsson S G,Melin,Rosenqvist H.Commercial harvest of willow wood chips in Sweden[R].Proceedings of the 10th European Conference and Technology Exhibition,Biomass for Energy and Industry,Germany,1998.
6HE Youjun~1 LASZLO Mathe~2 CHEN Jie~1 HAN Zheng~3 1.Research Institute of Forestry Information and Policy,Chinese Academy of Forestry,Beijing 100091.P.R.China 2.World Wildlife Fund(WWF) International,Perthshire PH8 0AD,Scotland,UK 3.World Wildlife Fund(WWF) China,Beijing 100006,P.R.China.Potential Impact of Forest Bioenergy on Environment in China[J].Chinese Forestry Science and Technology,2009,8(2):1-11.
