以森林资源可持续经营为基础的收获调整

Harvest Regulation Base on Sustainable Management of Forest Resource

在ForStat2.0的支持下,从现实的生产实际出发,构造出包括现实龄级数、目标龄级数、调整期、不采伐龄级的上界、平稳产量约束、目标面积误差约束和期末总蓄积约束,它们唯一地决定该线性规划模型的结构。从满归林业局试验结果来看,采伐面积和蓄积逐分期下降,保留蓄积呈波浪式上升,最终达到可持续的林龄结构。

By the support of ForStat 2. 0, beginning with the real production, uncut age series, stable yield restriction, target area error restriction, and total volume and to construct the real age series, target age series, regular period, the upper limit of restriction at the end of period, each of them determined the structure of that linear programming model. The result of the experimentation in Mangui Forestry Bureau proved th.at, the cut area and volume dropped by stages, and the preserved volume moved up in conk, as a result, the sustainable forest age structure was reached.