基于层次分析法的森林健康状况评价研究

Evaluation of Forest Health Based on Analytic Hierarchy Process

以南方沿海省份森林资源为研究对象,构建森林健康的三大类15个指标。建立上下层两两判断矩阵,通过层次分析法和熵权法对定性指标进行量值处理,对各评价指标进行权重计算。由最大隶属度原则获得的研究结果表明,该省森林健康综合评价值为0.3605,对应的评价等级为良好级,即该省的森林资源呈现出一个良好状态,森林生态系统较好,二级评价指标中森林结构完整性程度较低,主要是林种结构和林龄结构存在一定的缺陷,天然林较少,森林功能性和环境性风险较低。

Taking the forest resources of southern coastal provinces as the research object,15 indicators of three categories of forest health were constructed.The upper and lower pairwise judgment matrices were established,and the qualitative indicators were processed by AHP and entropy weight method,and the weight of each evaluation indicator was calculated.The research results obtained from the principle of maximum membership degree showed that the comprehensive evaluation value of forest health was 0.3605,with good corresponding evaluation grade,showing a good state and ecosystem,and the integrity of forest structure in the secondary evaluation indicator was low,mainly due to the defects of forest species structure and forest age structure,the insufficiency of natural forest and low risk of forest function and environment.