2Buck LE. Agroforestry policy issues and research directions inthe US and less developed countries: insights and challenges from recent experience [J]. Agroforestry Systems, 1995,30( 1/2):57-73.
3Sierria J,et al. Soil nitrogen as affected byGliricidia sepiumin a silvopastoral system in Guadeloupe,French Antilles [J].Agroforestry Systems,2002,54(2):87-97.
4Schroth G,et al. Plant -soil interactions in muhistrata agtoforestry in the humid tropics [J].Agroforestry Systems, 2001,53(2):85-102.
5Craswell ET,et al. Agroforestry in the management of sloping lands in Asia and the Pacific [J].Agroforestry Systems, 1998,38( 1/3 ): 121-137.
6Shankar U,Lama SD,Bawa KS. Ecosystem reconstruction through 'taungya'plantations foUowing commercial logging of adry,mixed deciduous forest in darjeeling himalaya [J].For. Ecol. Man.,1998, 102(2-3):131-141.
7Kim SK,Rajapakse N.Enzymatic production and biological activities of chitosanoligosaccharides(COS):Areviwe[J].Carbohydrate Polymers,2005,62(4):357-368.
8Kumar SG,Rahman MA,Lee SH,et al.Plasma proteome analysis for anti-obesity andanti-diabetic potentials of chitosan oligosaccharides in ob/obmice[J].Proteomics.2009,9(8):2149-2162.