4GAMBLES R L,ZSUFFA L.Conversion and use of poplar and willow biomass for food,forage and energy in North America[M].International poplar commission,1984.
5FAO.Global data on forest plantations resources[J].Forest Genetic Resources,2001,29:34 ~ 39.
7SHENGZUO FANG,XIZENG XU,XIANG YU,et al.Poplar in wetland agroforestry:A case study of ecological benefits,site productivity,and economics[J].Wetland Ecology and Management,2005,13:93 ~ 104.