Study on Community Structure of Pinus mussoniana in Source of Huaihe River

ZHANG Xue-shun;LIU Guo-shun;FENG Wan-fu;QIAO Liang;ZHANG Yu-hu;Xinyang Forestry Science Institute;

Pinus massoniana Lamb.;;community structure;;species diversity;;source of Huaihe River

Pinus massoniana Lamb. community sample plo ts were set in Huai River source area. The community structure characteristics, stand volume and number of P. massoniana were investigated to analyze the community species composition,species richness and diversity. The results showed that, 1 masson pines grew normally;trees were with high-density, while the yield was not high;in the sample area,shrub was relatively abundant; and herb was relatively less; P. massoniana formed into many associations in this area; 2 the average number of tree was 1 988 ind./hm2;the average cumulation volume was119.97 m3/ hm2; there was no significant correlation between the plant number and cumulation volume; 3 richness of shrub species was the highest in P. massoniana community, followed by herb layer, and the tree layer; the diversity index, Simpson index and Shannon-Weiner index was the highest of shrub layer, followed by the herb layer, and the tree layer, illustrating that the order of species diversity of P. massoniana community in the Huaihe river source area was shrub layer > herb layer > tree layer.4 pines in the area were not mature community,still in the stage of succession.