长白山的台风灾区范围及植被恢复动态——基于遥感技术的研究  

Range of typhoon-stricken area and trend of vagetation restoration in Changbai Mountain:RS-based research

作　　者：南颖[1] 刘志锋[1] 朱卫红[1] 武耀祥 薛俊刚 

机构地区：[1]延边大学理学院地理系,吉林延吉133002 [2]长白山国家级自然保护区管理局自然保护管理中心,吉林二道白河133613

出　　处：《自然灾害学报》2011年第6期131-139,共9页Journal of Natural Disasters

基　　金：国家自然科学基金资助项目(40661003);延边大学与Kanazawa University国际合作项目

摘　　要：通过对1985年和1987年Thematic Mapper(TM)影像中提取出的归一化植被指数进行对比分析,提取了1986年长白山自然保护区内遭受台风袭击后的灾区范围,并通过比较1988年和2007年的TM影像,分析了风灾区的植被恢复过程。同时,结合该地区的地形、水文、土壤和公路数据对风灾区的植被恢复进行了驱动力分析。发现地形驱动因子与风灾区的恢复程度呈高度相关,随着高程、坡度和平地所占比例的减少,恢复程度逐渐变好;此外水文、土壤和人类活动都对风灾区的植被恢复产生一定影响,另外人工干预恢复对植被生长也起着积极的作用。研究结果可供风灾区内植被的进一步恢复和森林防火工作参考。This paper is intended to identify the stricken area of typhoon in 1986 by comparing the normalized difference vegetation index（NDVI） variance extracted from the Thematic Mapper（TM） imageries in 1985 and 1987 in the Changbai Mountain Natural Reserve,and to analyze the process of vegetation restoration in the area in the next 20 years after the striking by comparing the vegetation changes extracted from the TM imageries in 1988 and 2007.The forces driving vegetation restoration was also examined in the paper by utilizing the terrain,hydrology,soil,and road data of the area.Field investigation indicated that the vegetation restored slowly in this area.It was found that terrain was a key factor driving vegetation restoration.High correlation was found between the recovery degree and terrain.The recovery degree increases with the reduction of elevation,slope and flat-land.Besides,vegetation recovery is also affected by hydrology,soil and human activities.In addition,the restoration could be accelerated under human interference.This study provided a reference to monitoring vegetation change in typhoon-stricken area.The methodology developed in the study could also be applicable to monitoring vegetation restoration in forest-fired regions.

关 键 词：遥感 台风灾区 归一化植被指数 植被恢复 长白山自然保护区 

分 类 号：TP7[自动化与计算机技术—检测技术与自动化装置] S42[自动化与计算机技术—控制科学与工程]