大山包自然保护区植被光谱特征季节变化研究  

Study on seasonal variation of vegetation spectral characteristics at Dashanbao Nature Reserve

作　　者：梁国军[1] 彭明春[1] 王崇云[1] 

机构地区：[1]云南大学生态学与地植物学研究所,云南昆明650091

出　　处：《云南大学学报（自然科学版）》2009年第S1期378-381,共4页Journal of Yunnan University(Natural Sciences Edition)

摘　　要：在大量野外调查和影像分析的基础上,参考《云南植被》分类系统.将大山包自然保护区植被划分为7种植被类型:沼泽化草甸、亚高山草甸、次生灌丛、华山松林、高山松林、硬叶栎林和滇杨林.以2005年TM影像为数据源对保护区植被进行人机交互解译,利用MODIS NDVI数据提取各类型的MODIS NDVI季节变化信息,构建5个光谱特征季节变化指标:类型月NDVI年最大值(NDVIjmax)、类型月NDVI年最小值(NDVIjmin)、类型NDVI年内极差(NDVIr)、类型NDVI年累积量(NDVIja)和类型NDVI年平均值(NDVIjm)对研究区植被进行全年分析,较好地反映了植被的季节变化规律.Based on comprehensive filed survey and image analysis,it developed a classification system for Dashanbao Nature Reserve based on remote sensing,in which the basic units is reference to the subtype in Yunnan Vegetation.In total,there are 7 types of vegetation:swamp meadow,subalpine meadow,secondary scrub,armand pine,alpine pine,sclerophyllous oak forest and Yunnan forest.Make use of TM images in 2005 as data source to interpret the vegetation on the protected areas by human-computer interaction,then used MODIS NDVI data to extract various types of information on seasonal variation of MODIS NDVI,it constructed 5 indexes of seasonal variation of vegetation spectral characteristics to analysis vegetation variation,they are the max NDVI,the min NDVI,extreme difference NDVI,mean NDVI and accumulated NDVI of one year of different types of vegetation respectively,it showed that the indexes reflect the seasonal changes of vegetation evidently.

关 键 词：季节变化 光谱特征 大山包 

分 类 号：Q948[生物学—植物学]