基于层次分析法的广东省森林健康状况评价初探

Evaluation of Forest Health Status in Guangdong Province Based on Analytic Hierarchy Process

采用层次分析法,构建广东省森林健康指标体系,设置目标层、准则层、因子层3个层次4大类16个指标,建立上下层两两判断矩阵,取6位专家赋值的平均值为各层次指标权重值,对定性指标量化赋值,定量指标取实际值,对数据进行无纲量化处理,计算综合得分,并运用广东省森林资源连续清查样地数据,对广东省各市森林健康状况进行评价。结果显示:全省健康森林比例占7.6%、较健康森林占57.8%、亚健康森林占34.5%、不健康森林占0.16%。评价结果反映出当前广东省森林整体处于较健康状态,表明广东森林仍需提高森林经营管理水平以增进森林健康。

The analytic hierarchy process was used to build the index system of forest health in Guangdong Province in which 16 indicators,4 categories in three level of target,criterion and factor were set up and the comparison judgment matrix was established. The six average values were weight values of index in related levels. Quantizing the qualitative indexes and taking actual values of quantitative indexes,the data was nondimensionalized and calculated. The health status of forest in Guangdong was evaluated based on the sample data of continuous forest inventory. The results showed that the proportion of healthy forests in the province accounted for 7. 6%,the less healthy forest was 57. 8%,the sub-healthy forest was34. 5%,and the unhealthy forest was 0. 16%,which reflected that the current level of forest health in the province was less healthy and the forest management should be improved.