基于遥感和GIS的三北防护林工程生态效益评价研究——以山西省中阳县为例  

Ecological Benefit Evaluation of Three-north Shelter Forest Project Based on GIS——A Case Study in Zhongyang County,Shanxi Province

作　　者：王晓慧[1] 陈永富[1] 陈尔学[1] 张元应 雒艳兰 

机构地区：[1]中国林业科学研究院资源信息研究所,北京100091 [2]山西省中阳县林业局,山西中阳033400 [3]山西省吕梁市水利局,山西吕梁033000

出　　处：《水土保持通报》2011年第5期171-175,267,共5页Bulletin of Soil and Water Conservation

基　　金："十一五"国家科技支撑计划课题"国家重点林业工程监测技术研究"(2006BDA23B05);中国林科院资源所中央级公益性科研院所基本科研业务费专项"林业生态环境监测中的尺度转换问题研究"(RIFRITZJZ2007011)

摘　　要：以山西省中阳县为试验区,利用遥感监测和地面调查所形成的工程进展基础数据,应用价值量对三北防护林工程的生态效益进行了计量,并在GIS支持下获得三北防护林工程生态效益评价图,为评价三北防护林工程建设质量和成效提供依据,同时为开展生态补偿提供参考。结果表明,中阳县三北防护林工程改善生态环境成效显著,单位面积年平均生态效益为40 807.05元/(hm2.a),年生态效益总价值为3.08×109元/a。从分布状况来看,土石区立地条件比黄土区好,大量分布着天然次生林,土石区防护林生态效益价值量大于黄土区,土石区和黄土区防护林单位面积年平均生态效益价值分别为42 800.98和37 342.20元/(hm2.a)。从植被类型来看,针叶林、阔叶林和针阔混交林单位面积年平均生态效益价值量大于灌木林,分别为44 618.59和37 414.95元/(hm2.a)。Ecological benefits of the three-north shelter forest project were evaluated based on total value calculated from the data regarding project status,which was estimated using remote sensing monitoring and ground truthing in Zhongyang County,Shanxi Province.An ecological benefit evaluation map of the three-north shelter forest project was acquired using GIS,providing a basis for project evaluation and ecological compensation.The results show that the three-north shelter forest project in Zhongyang County has improved ecological environment significantly,resulted in annual average ecological benefit per unit area of 40 807.05 yuan/（hm2·a）,and annual total ecological benefit of 3.08×109 yuan/a.As of the spatial distribution,the sites located in the earthy-rocky mountainous area developed a large number of natural secondary forests,suggesting a better environmental conditions than in the loess area.Annual average ecological benefits per unit area in the earthy-rocky mountainous and in loess area were 42 800.98 and 37 342.20 yuan/（hm2·a）,respectively.In terms of vegetation type,annual average ecological benefit per unit area of the forests（coniferous,broadleaved,and coniferous and broadleaved mixed） was greater than that of shrub,as of 44 618.59 and 37 414.95 yuan/（hm2·a）,respectively.

关 键 词：三北防护林工程 生态效益 遥感监测 GIS 中阳县 

分 类 号：S718.56[农业科学—林学] X176[环境科学与工程—环境科学]