森林资源可持续状况评价方法

An evaluation method for forest resources sustainability

为了准确、快速地评估森林经营单位的森林资源可持续状况,提出了森林资源可持续状况的评价指标、评价方法和评价结果分级。森林资源可持续状况评价指标包括森林资源质量状况、森林资源利用状况和森林受干扰状况3个方面共28个评价指标。通过参照技术规定、查阅专业用表和使用经验数值等3种方法确定评价指标的基准值;根据基准值把评价指标测定值分级为"好"、"中"、"差"3个等级,并分别赋值1.0、0.62和0.38。利用专家咨询法或层次分析法,根据森林经营单位的主要经营目标和森林主导功能,确定森林资源质量状况评价指标的权重。根据评价指标的实测值、赋值和权重,计算森林资源质量状况指数、森林资源利用状况指数和森林受干扰状况指数,进而计算森林资源可持续状况指数。根据森林资源可持续状况指数值的大小,将森林经营单位的森林资源可持续状况划分为优、良、中和差四个等级。

This paper proposed a quick evaluation method on forest resources sustainability at forest management unit level,which including indicators,procedure and grading methodology.The evaluation framework consisted of 28 indicators which under three aspects,including forest resources quality,forest resources utilization,and forest disturbance situation.The benchmark value for each indicator was derived by referencing related technical regulations,forest management handbooks,and empirical data.The measured value of indicators were divided into three classes based on the benchmark value,which include good（scored 1.0）,intermediate（scored 0.62） and poor（scored 0.38）.The weight value of evaluation indicator on forest resources quality was decided by using Delphi Method or Analytic Hierarchy Process（AHP）,according to the forest management objectives and forest main functions.According to the observation value,given value and weight value of each indicator,the forest resources quality index,forest resources utilization index and forest disturbance situation index were calculated;then the forest resources sustainability index was calculated by using the above calculated index.The forest resources sustainability was classified into four levels based on the index value,excellent,good,intermediate,and poor.