神农架地区生态环境遥感监测与恢复治理评价  

Remote Sensing Monitoring and Restoration Evaluation of Ecological Environment in Shennongjia Area

作　　者：戚曌 于新文[1] 谭炳香[1] 邓广[1] 于航 沈明潭 QI Zhao;YU Xin-wen;TAN Bing-xiang;DENG Guang;YU Hang;SHEN Ming-tan(Research Institute of Forest Resources Information Techniques,Chinese Academy of Forestry,Beijing 100091,China)

机构地区：[1]中国林业科学研究院资源信息研究所,北京100091

出　　处：《林业科学研究》2021年第6期90-98,共9页Forest Research

基　　金：中央级公益性科研院所基本科研业务费专项资金“基于声音指数的动物多样性监测技术研究”(编号:CAFYBB2018SZ010);科技基础资源调查专项(编号:2019FY202501)。

摘　　要：[目的]利用神农架林区、神农架自然保护区内和保护区外近20年的植被覆盖度变化信息,结合不同时期的森林经营活动和治理手段,进行生态环境变化监测与评价。[方法]以神农架林区、神农架自然保护区内和保护区外为研究区,应用1999年、2007年和2019年3期Landsat遥感影像,基于像元二分法模型估测研究区的植被覆盖度,采用差值分析的方法,分别估算各区域植被覆盖变化量,并结合不同时期的治理政策和经营活动进行评价分析。[结果]1999年到2019年,神农架林区总体植被覆盖度均值提高了8.25%,其中高植被覆盖度占97.50%;前期保护区内的植被覆盖度一直优于保护区外,到后期保护区内、外的植被覆盖度差异变小。[结论]近20年来,神农架林区的植被覆盖度总体处于增长的趋势,生态环境逐渐趋于平衡,说明自然保护区的建立、天然林保护工程和退耕还林工程等一系列政策的实施对区域生态环境的恢复是有效的。[Objective]To monitor and evaluate the change of ecological environment by using vegetation coverage change information in Shennongjia Forest Region,Shennongjia Nature Reserve and outside the reserve in the past two decades,combined with forest management activities and governance methods in different periods.[Method]Taking Shennongjia Forest Region,Shennongjia Nature Reserve and outside the reserve as the research area,using the three phases of Landsat remote sensing images in 1999,2007 and 2019 to estimate the vegetation coverage of the study area based on dimidiate pixel model,and the method of difference analysis was used to calculate the vegetation coverage changes in each region.The results were evaluated and analyzed in conjunction with the changes in national policies and business activities in different period.[Result]From 1999 to 2019,the mean forest vegetation coverage(FVC)of Shennongjia Forest Region increased by 8.25%,the area with high FVC accounted for97.50%.The vegetation coverage in protection zone has been better than that out of protection zone in the early stage,but in the late stage,the difference of vegetation coverage in and outside the protected zone is smaller.[Conclusion]In recent 20 years,the vegetation coverage of Shennongjia Forest Region has been on the trend of increasing,and the ecological environment has gradually become balanced,which indicates that the establishment of nature reserves,the natural forest protection project and the conversion of farmland to forest project are effective for the restoration of the regional ecological environment.

关 键 词：植被覆盖度 生态恢复 神农架自然保护区 天保工程 

分 类 号：S718.54[农业科学—林学]