西南林业大学学报
西南林業大學學報
서남임업대학학보
JOURNAL OF SOUTHWEST FORESTRY COLLEGE
2014年
3期
57-61
,共5页
NDVI%EVI%指数%典型森林%生长期%遥感监测
NDVI%EVI%指數%典型森林%生長期%遙感鑑測
NDVI%EVI%지수%전형삼림%생장기%요감감측
NDVI%EVI%index%typical forest%growing season%remote sensing monitoring
针对大区域森林植被生长变化规律的应用需求,采用统计分析的方法,利用选取的EVI和NDVI两种植被指对中国6种典型森林2000-2011年的生长期变化进行监测,并对监测结果进行了比较。结果表明,从提取的生长期拐点的出现时间及生长期的变化趋势可知,2种植被指数提取的6种典型森林的生长变化时间范围基本相同,都能较好地反映森林生长期的变化过程,说明利用植被指数进行森林生长期监测的方法是可行的;但对高森林植被覆盖区域的森林植被变化及对云等干扰因素的敏感性来看,EVI比NDVI更适合用于大区域空间范围、多种类型的森林植被变化的监测。
針對大區域森林植被生長變化規律的應用需求,採用統計分析的方法,利用選取的EVI和NDVI兩種植被指對中國6種典型森林2000-2011年的生長期變化進行鑑測,併對鑑測結果進行瞭比較。結果錶明,從提取的生長期枴點的齣現時間及生長期的變化趨勢可知,2種植被指數提取的6種典型森林的生長變化時間範圍基本相同,都能較好地反映森林生長期的變化過程,說明利用植被指數進行森林生長期鑑測的方法是可行的;但對高森林植被覆蓋區域的森林植被變化及對雲等榦擾因素的敏感性來看,EVI比NDVI更適閤用于大區域空間範圍、多種類型的森林植被變化的鑑測。
침대대구역삼림식피생장변화규률적응용수구,채용통계분석적방법,이용선취적EVI화NDVI량충식피지대중국6충전형삼림2000-2011년적생장기변화진행감측,병대감측결과진행료비교。결과표명,종제취적생장기괴점적출현시간급생장기적변화추세가지,2충식피지수제취적6충전형삼림적생장변화시간범위기본상동,도능교호지반영삼림생장기적변화과정,설명이용식피지수진행삼림생장기감측적방법시가행적;단대고삼림식피복개구역적삼림식피변화급대운등간우인소적민감성래간,EVI비NDVI경괄합용우대구역공간범위、다충류형적삼림식피변화적감측。
To study the growth variation of the large regional forest vegetation,this paper selected two vegetation indices data-EVI and NDVI to monitor the changes of growth period from 2000 to 201 1 in six typical forests in China,then compared the results by using the statistical analysis.The results show that from the growing trend and the time when growing season appeared,the time range of growth changes extracted from two kinds of vegetation indi-ces are basically the same in the six typical forest types and could perfectly reflect the process of change of forest growing season.This indicates that the method of using vegetation index to monitor forest growing season is feasible. EVI is more effective to the changes of forest vegetation for high forest coverage area and less sensitive to disturbances such as cloud.In conclusion,EVI is more suitable for monitoring the changes in the forest which has various types′forest vegetation in large area space than NDVI.