Phytosociological Study and Spatial autocorrelation on the Forest Vegetation of Mt. Yeonae at Gijang-gun

Abstract

Abstract Mt. Yeonae is at Gijang-gun in Busan and is surrounded by farming lands on three sides. The search for the species composition and dynamics of local communities were studied at Mt. Yeonae of how spatial similarity decays with geographic distance. The index values of Zurich-Montpellier School’s phytosociology at the 12 plots was compared to a distribution of similarly using 20 m quadrates at 12 sites. The specific communities were five including Pinus densiflora – Quercus variabilis community. Six species were significant similarity between neighboring sites by using the spatial autocorrelation coefficient, Moran’s I. If Mt. Yeonae was destroyed by an artificial action, some spatial correlated species such as P. densiflora and Q. variabilis will be collapsed because of no maintaining the effective population sizes. Key words : Mt. Yeonae, Species composition, Phytosociology, Spatial autocorrelation 1. Introduction 1) Community ecology is predicted on the notion that the fitness of individual organisms depends on their own identity in relation to the identities and abundances of other community members (Huh, 2011). The search for patterns in the species composition and dynamics of local communities of interacting organisms, and for the processes that cause pattern, has seldom employed information about the phylogenetic relationships of species within those communities (Vane-Wright et al., 1991). Instead, species are usually treated as equivalent units, with independent functional traits (Roughgarden, 1989; Webb and Peart, 1999; Webb, 2000). In this article, we describe general methods for quantifying the phylogenetic structure of local communities of interacting organisms (relative to a shared species pool) and use data from a forest community in Mt. Yeonae (149.5 m) at Gijang-gun in Busan as an example of how this method can be used to address questions of community organization. Recently, the new road which is situated between Mt. Yeonae and Hoeryong-ri at Ilkweong-meon has been opened instead of old road. In addition, urban growth is gradually going on adjacent to Mt. Yeonae forest in Gijang-gun. Mt. Yeonae is surrounded by farming lands on three sides and the mountain is open towards the Hoeryong-ri in the northwest.Urbanization adjacent to natural regions and forests often results in simplification of habitats and a community of plant, which lead to fewer species dominated by habitat patch size to species richness, increasement of immigration and extinction rates, and