森林资源环境定价方法——木材需求曲线修正法的改进探讨

Study on a pricing approach to environmental value of forest resources—improved Timber Demand Curve Amend Method

对森林资源的环境价值评价,目前国内外有许多方法。作者曾提出了木材需求曲线修正法确定森林资源的环境价值。论文进一步对该方法进行了后续研究,并对其加以改进。改进后的方法采用经济学中的边际效用相等的原理确定森林资源的最佳分配,森林资源的环境价值总量等于边际效用价值的积分,单位环境价值根据公共产品特点采用直接边际效用价值转换成平均价值定价。该方法以江西省为例评价了森林资源的环境价值,评价结果是,在一定条件下,全省森林资源的环境价值为2887×108元,单位环境价值为1145元/m3。改进后的方法减少了原方法运用在确定森林资源环境总价值所存在的误差,从而使该方法逻辑性更强,运用更为简便。

Many methods are used to evaluate environmental value of forest resources in the world.A new approach,i.e.,Timber Demand Curve Amend Method(TDCAM),was introduced by the authors.In this paper,the objective of the research is to study farther and improve TDCAM,so as to make the method more scientific and rational in evaluating environmental value of for-est resources.The approach of improvement of TDCAM is undertaken in light with the following procedure,namely,the optimal allocation of forest resources is made by equal marginal utility ac-cording to the principle of economics,the total environmental value of forest resources is inte-grated into environmental marginal utility value,and unit environmental value of forest resources is priced by average value transferred from direct marginal utility value according to the princi-ple of public goods.The method is used in a case of Jiangxi province to evaluate environmental value of forest resources.The result is that in a given condition the total environmental value of forest resources is288.7×10 8 yuan,and the unit environmental value of forest resources is1145×10 8 yuan/m 3 in Jiangxi province.The improved method is better than the original,and is of logi-cality and convenience.It can reduce the errors when total environmental value of forest re-sources is calculated by the method.