关键词: 人工林经营, 森林结构, 森林耦合网络, 节点数, 介数, 稳定性

Abstract:

Using the dividing method of sub-compartment level,the sub-compartment is treated as “individual tree”,the sub-compartment as stand between adjacent sub-compartment stands in the edge effect approximately simulates “individual tree” and “individual tree” space position relation,GIS is used to build the forest coupling system.Through complex coupling network,the network was abstracted into the forest to build and use forest coupling network structure stability of the model.In view of the plantation forestry characteristics and mode of operation,the optimization of the structure stability of the plantation management is explored.The results were as follows:(1)As the forest coupling system exists in the larger area and quality of sub-compartment which can be updated to a small area is poor,selective update in sub-compartment with the surrounding sub-compartment of different tree species can be made,and the sub-compartmentes with larger area are gradually changed into the area of the “mixed” smaller sub-compartmentes.This is a process that balances the betweenness distribution around the sub-compartmentes with larger area,improving the forest structure stability.(2)When the forest forest gap exist,in the coupling system,replanting can be made in forest gap and the advantage species around different trees used,the process reduces the forest window around the node betweenness,balances the betweenness of the entire network distribution,improving the forest structure stability.Study on coupling network structure optimization was actually how to solve a small forest in the limited space within the reasonable layout,aimed at for the plantation management in the process of how to keep the forest structure stability,at the same time,both the maneuverability of the forestry production to provide a new train of thought.

Key words: plantation management, forest structure, forest coupled network, number of vertices, betweenness, stability, optimize