森林主伐量的动态分析计算

Dynamic Calculation of Final Yield

本文在考虑现有森林各龄级的蓄积及其连年生长率的两个前提下,对能保证永续利用的最大收获量求算方法作了初步的探讨。虽然解决问题的方法归结为非线性目标规划问题,但在编制电算程序时,由于用的是从高龄级到低龄级的试算循环比较法,因而比非线性目标规划程序简短得多,电算时所占的内存空间和耗费的机时也少得多。

This paper approaches how to calculate the maximum annual yield under sustained-yield management, given the current stocking and currnt ann-ual increment for each age class. Though the solution to this is a non linear-object programming problem, the computer programming is made according to the trial and error method from high age class to low age class so that the pr-ogra mme is much shorter and both the storage and the running time are saved.