Studies On The Ecological Characteristics Of Forest Types Of The Subtropical Zone

The community is the most important arrangement in the life systems, and is the major object and base on studying the ecological systems.The subject beginning in the eighties of the twentieth century is with the development of science and technology in the plant ecological fields. It was concerned closely by biologists, ecologists and geneticists, and reacted strongly. Plant community ecology research aimed at understanding the origin, development, static and dynamic characteristics of the various communities as well as the mutual relations, thus deepening of the natural world to understand the ecological system particularly. Thus, communities in ecology and the social practice are a prominent theoretical and practical significance.Communities of the fairy valley forest park in Sanming and the scenic area in Wuyishan were analyzed and discussed by qnuantitative statistic method in the work, including species composition and flora interspecific association of communities, species diversity of communities, structure and dynamics of communities, analysis of the space structure of communities, distribution pattern of communities, species abundance distribution.The results indicated as follows:(1) The fairy valley national park in Sanming and the scenic areas in Wuyishan of the subtropical zone were rich in species composition . communities in the Fairy Valley State National Park in Sanming had 41 Section, 143 species, vertical structure of communities is evident, could be divided into trees layer,shrubs layer,layer and layer between herbal plants. Basically, the shape of its tall trees were composed of Pinus massoniana Lamb, C.lamortii Harce, the shape of its shrubs layer stemed from Maese japonica, I.pubescens Hook.et Arn and Castanopsis fissa etc which did not reach the level of positive species . The Scenic Areas in Wuyishan has 41 Section, 120 species, its positive species were the composition of the xylophyte, such as Pinus massoniana Lamb, Castanopsis carlesii.The pan-tropical is the first element of the distribution of genus of seed plants , seed plants were mainly tropical origin in the fairy valley national park in Sanming and the scenic areas in Wuyishan.(2) The 2×2 contingency table , the analysis of different indices including the analysis of variance, the x~2-test, the AC and ochiai coefficient were used to analyze the species association between 20 dominant populations in community in the fairy Valley national park in Sanming and in Wuyishan Mountain Nature Reserve of the subtropical zone.The result of analysis shows that nagetive correlation exist among the common populations in the forest park of the scenic areas in Wuyishan, which indicated that the community is in developed...