上海城市植被光谱反射特征分析  

Analysis on Urban Vegetations Reflectance Characteristics in Shanghai

作　　者：林文鹏[1] 李厚增[1] 黄敬峰[2] 刘冬燕[1] 宗玮[1] 胡小猛[1] 

机构地区：[1]上海师范大学旅游学院地理系,上海200234 [2]浙江大学农业遥感与信息技术应用研究所,浙江杭州310029

出　　处：《光谱学与光谱分析》2010年第11期3111-3114,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(40801168);上海市教委科研创新项目(10YZ72);上海师范大学重点学科(DZL809);中国博士后基金(20080441237);上海市重点学科建设项目(S30406)资助

摘　　要：地物光谱特征是遥感机理的重要内容,也是遥感应用研究的重要依据。城市植被作为城市中重要的生命支持系统,对于维持城市生态系统平衡起着核心的作用。文章以上海城市植被为研究对象,利用美国ASD公司生产的FieldSpec3便携式地物波谱仪,通过对2009年10月金边黄杨,金丝桃,圆柏,麦冬,珊瑚树,小叶黄杨等野外和室内光谱数据采集和处理,获得了这6种城市植被的高光谱数据。采用Savitzky Go-lay平滑方法进行光谱噪声去除和利用微分光谱技术进行植被环境背景影响消除,分别从植被冠层光谱和叶片光谱以及微分光谱,对这6种城市植被的光谱特征以及光谱曲线的差异和变化规律进行分析。可为今后进一步研究城市植被理化性能、参数反演、植被分类、植被调查以及城市环境监测等遥感应用服务。The spectral features of ground objects are not only the brief contents of mechanism of remote sensing,but also the important basis in remote sensing application.As one of main components of terrestrial ecosystems,urban forest plays a key role in maintaining urban ecosystem balance.In the present paper,the authors adopted FieldSpec3 portable spectroscope made by American ASD Company,and investigated or examined some spots in the Kangjian park of Shanghai,China.The spectra of euonymus japonicus L.cv,hypericum monogynum,sabina chinensis,ophiopogon japonicus,viburnum awabuki,and buxus sinica were measured.According to the actual conditions,the authors analyzed the data noise characteristic of the spectrum and got rid of the noise with Savitzky Golay method.Meanwhile,differential spectrum technology was used to remove the environmental background influence.Then the authors analyzed their features and variation of these spectral curves from the vegetation canopy and leaf level respectively.The research on spectral reflectance characteristics for urban vegetations is very significant.And the result of this research can be used for the study of physical chemistry performances of urban vegetation,remote sensing retrieval,vegetation classification,vegetation survey and environmental monitoring in urban area.

关 键 词：城市植被 光谱分析 高光谱反射率 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]