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 Zürich-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.

Abstract
 1. Introduction
 2. Materials and method
  2.1. Study area
  2.2. Phytosociology analysis
  2.3. Analysis of spatial autocorrelation
 3. Results and Discussion
  3.1. Phytosociological Study
  3.2. Spatial autocorrelation
  3.3. Site identity and cluster analysis
 4. Conclusion
 5. Conclusion
 References

• Byoung-Ki Choi(Department of Molecular Biology, Dongeui University)
• Man Kyu Huh(Department of Molecular Biology, Dongeui University) Corresponding author