Mixed Effect Analysis of Pinus massoniana Broadleaved Tree

Under the foundation of research on the soil chemistry differences among Castanopsis fissa+Pinus massoniana,Betula luminifera+Pinus massoniana mixed forest and P.massoniana pure forest,the growth quantity,the organs biomass above ground and distribution rate of these forest were discussed in this article,so as to provide the theory of reasonable building and management of P.massoniana broadleaf tree mixed forest.The results showed that compared to the P.massoniana pure forest,C.fissa+P.massoniana and B.luminifera+P.massoniana mixed forests could improve soil fertility,growth and biomass accumulation at different levels;As far as different mixed forest were comcerned,C.fissa+P.massoniana mixed forest improved soil fertility was better than that of B.luminifera+P.massoniana mixed forest,and P.massoniana's growth of B.luminifera+P.massoniana mixed forest was higher than that of C.fissa+P.massoniana mixed forest.From the point of biomass distribution rate,the strunk biomass distribution rate was biggest,the following were the branch and the leaf.As far as biomass distribution rate of P.massoniana were comcerned,leaf's distribution rate was B.luminifera+P.massoniana mixed forestP.massoniana pure forestC.fissa+P.massoniana mixed forest,the branch's distribution rate was B.luminifera+P.massoniana mixed forestC.fissa+P.massoniana mixed forestP.massoniana pure forest.