关键词: 毛竹林, 择伐, 空间结构优化调控模型, Monte Carlo法, GIS

Abstract: Spatial structures of current Phyllostachys edulis stands are usually irrational. Based on non-spatial structure requirements,how to adjust and control the spatial structures of Phyllostachys edulis stands to lead to rational state is a focus problem in practice. This study used a less disturbed Phyllostachys edulis stand in Tianmu Mountain National Nature Reserve of Zhejiang Province as a research object,a spatial structure optimizing adjustment and control model of Phyllostachys edulis stand was established based on GIS(geographic information system) spatial analysis function. The objective of the model is spatial structure, non-spatial structures are its constraints. The model belongs to nonlinear integer programming,Monte Carlo algorithm was used to solve the model. An optimal cutting plan was obtained by solving the model. Based on the plan,through spatial structure optimizing adjustment and control of Phyllostachys edulis stand,the objective function value of stand spatial structure after cutting increases 32.650 0% than that of before cutting. The stand spatial structure is improved at the furthest and non-spatial structures are not destroyed. Therefore,this plan can be used for making cutting plan.

Key words: Phyllostachys edulis stand, selection cutting, spatial structure optimizing adjustment and control model, Monte Carlo algorithm, geographic information system(GIS)