贵州百里杜鹃林区森林生态系统健康遥感诊断

Remote sensing diagnosis of forest ecosystem health in Baili Dujuan Forest Park,Guizhou Province

贵州百里杜鹃林区是当今世界面积最大、种类最多的天然杜鹃林带之一,具有重要科研及保护价值。由于林区植物相对单一,树龄较大,人为活动干扰随旅游开发不断加大,森林生态系统已受到较多影响。为掌握林区森林生态系统健康状况,有效保护及合理利用林区珍贵自然资源,基于经典健康模型,结合林区1992年—2015年区域遥感数据、野外调查和问卷调查等资料,利用层次分析法,首次构建了林区森林生态系统健康遥感诊断指标体系,并完成了对其健康状态的分析诊断。结果表明,百里杜鹃林区森林生态系统在2015年处于亚健康状况,森林群落受自然及人为因素影响较大,抵御外界压力能力不强。研究对于推动百里杜鹃原生杜鹃林的保护及其可持续利用具有重要科学意义,并可为其他类型森林生态系统健康诊断提供方法参考。

Guizhou Baili Dujuan Forest Park has one of the largest and most diversified natural rhododendron forest belts in the world,which has important scientific research and protection value.Due to the characteristics of the forest,and the increase of tourism development and human activities,the forest ecosystem has been harmfully affected.In order to find out the health status of the forest ecosystem,and to effectively protect and reasonably utilize the precious natural resources in the forest region,the present study was carried out.Based on the classical health model,the regional remote sensing data from 1992 to 2015,and the field and questionnaire survey,we constructed the remote sensing diagnosis index system of forest ecosystem health for the first time by using analytic hierarchy process(AHP),and completed the analysis and diagnosis of the health status of the target forest.The results showed that the forest ecosystem in Baili Dujuan Forest Park was in sub-health status in 2015,the forest community was greatly affected by natural and human factors,and its ability to resist external pressure was not strong.The study is of great scientific significance in promoting the protection and sustainable utilization of the original rhododendron forest in Baili Dujuan Forest Park,and has provided reference for the health diagnosis of other types of forest ecosystem.