海南省沿海防护林防护效能综合评价研究

Study on Comprehensive Evaluation of Protection Efficiency of Coastal Shelterbelt in Hainan Province

建立了海南省海防林防护效能的评价指标体系和评价标准,通过案例分析对熵权法、主成分分析和层次分析赋权方法进行了选优,确定层次分析法(AHP)更适合海防林防护效能的综合评价,同时通过聚类分析进一步验证了评价标准和评价权重分配的有效性。用层次分析法对文昌、万宁和昌江3个县市的海防林进行了6因素25个评价指标和沿海12个市县海防林5因素17个评价指标的综合评价,结果显示:在海防林的防护效能方面文昌海防林达到了良好水平,万宁为中等水平,昌江为不合格;沿海12个市县中,有6个市县的评价分值未达到合格标准,占评价单位的50%,2个评价单位达到了良好标准,占17%,2005年海南省海防林整体防护效能不高。

Indicators and standard of evaluation system for protection efficiency of coastal shelterbelt in Hainan province were established, and analytic hierarchy process （AHP） was selected for comprehensive evaluation of coastal shelterbelt after comparison with entropy method, principal component analysis and AHP by case analysis. Cluster analysis was to verify the effectiveness of evaluation standard and weight distribution. Comprehensive evaluation by AHP was conducted on coastal shelterbelts in Wenchang, Wanning and Changjiang by 6 factors and 25 indicators, and on 12 other coastal cities and counties by 5 factors and 17 indicators. The results indicated that protection efficiency of coastal shelterbelt in Wenchang was the best, then that in Wanning, and that in Changjiang was the last, while that in other 6 cities and counties was not up to standard among 12 ones, only 2 cities and counties were up to standard. The evaluation demonstrated that protection efficiency of coastal shelterbelt in Hainan province in 2005 was not good enough.