森林资源可持续的极限过程

Limit Process of Sustainment for Forest Resources

在天然同龄林森林资源可持续特征方程的基础上,研究森林可持续的极限过程,即天然林同龄林的林龄向量转移极限过程。对任意一个现实的林龄向量,只要在满足遍历性经营矩阵的固定作用下(使其满足齐次马尔柯夫链的条件),最终可达到均衡的可持续生产,并找出最终可持续的林龄向量。要求该林区是良好的生态区,这样才能为满足遍历性经营矩阵起着至关重要的作用。这也说明了,在森林分布的核心地带(如黑龙江省森工林区),只要森林经营活动渐进有序,森林的总面积不下降,该区的森林结构和木材生产是不会遭到毁灭性破坏的。

The paper deals with the limit process of sustainment for forest resources, namely the limit process of forest age vector transfer of natural even-aged forest, based on the characteristic equation of the sustainment for natural even-aged forest resources. For an arbitrary real-life forest age vector, it can achieve a balance of sustainable yield ultimately as long as it meets the conditions of homogeneous Markov chain. The forest age vector of sustainment for forest resources is deduced. The precondition of ergodicity management matrix demands that the forest region must be a good ecological area, that is to say, the forest structure and the timber production of core area of forest distribution, such as Heilongjiang forest industrial region, will not be damaged destructively so long as the forest management is reasonable and the forest area does not decline.