矩阵模型在最优树种组成研究中的应用

Application of Matrix Model in Optimal Tree Species Composition

对直径生长转移概率矩阵模型进行了线性扩展,用以研究混交异龄林的树种组成问题。以扩展后的矩阵模型为基础建立了考虑树种组成的最优经营模型,并以吉林省东部长白山林区针阔混交异龄林为对象,对模型进行了求解。结果显示作者所建立的模型同原模型一样具有直观性强、易于理解和应用的优点;特别是该模型在不增加问题复杂性的情况下,考虑了长期以来不易于定量化的最优树种组成问题。所得到的经营方案可供该地区制定经营决策时参考。

A transfering probability matrix model of linearly generalized diameter growth was used to deal with the tree species composition problem of mixed unevenly aged forest. Based on the generalized model, an optimal management model of species composition was structured with plot data from mixed stands of coniferous-deciduous species in the Changbai Mountains forest region, eastern Jilin province, China. Results show that the above model has the same advantages of direct-view, easy comprehension and application as the original model. A positive feature of the model is that the optimal species composition problem which has always been difficult to quantify was considered in the model with no increase in the complexity of the problem. The alternative model set up here could be used as a references in making management decisions in that region.