川西北米亚罗地区雪积/雪融光谱测量及光谱分析  

Spectrum Measurement and Analysis of Snow Cover/Melt in Miyaluo District in Northwest of Sichuan Province

作　　者：简季[1,2] 江洪[1,3] 江子山[4] 

机构地区：[1]南京大学国际地球系统科学研究所,江苏南京210093 [2]成都理工大学遥感与GIS研究所,四川成都610059 [3]浙江农林大学亚热带森林培育国家重点实验室/浙江省森林生态系统碳循环与固碳减排重点实验室,浙江杭州311300 [4]加拿大不列颠哥伦比亚大学地球与环境科学系

出　　处：《光谱学与光谱分析》2011年第5期1361-1365,共5页Spectroscopy and Spectral Analysis

基　　金：科技部重大国际合作项目(200073819);科技部重大基础性项目(2007FY110300-08);国家重点基础研究发展规划项目(2005CB422207;2005CB422208;2010CB428503);国家高技术研究发展计划项目(2009AA122001&2009AA122005);国家自然科学基金项目(40671132);浙江省重大科技专项(2008C13G2100010);四川省教育厅自然科学青年项目(07ZB121)资助

摘　　要：山地冰盖和积雪在全球很多地区的水分平衡中发挥着重要的作用,目前大面积山地冰盖和积雪的测量方法主要依靠遥感测量方法。为使用遥感反演某地区山地冰盖和积雪的储存量,了解其光谱特征是快速、准确建立反演算法的基础。以川西北米亚罗地区为研究区,布设了24个测控点,在2007年1月利用ASD便携式地物光谱仪对该地区积雪进行了积雪反射光谱的测定并对其进行了分析。分析结果表明:在米亚罗地区,1 026,1 256,1 493和1 990 nm是积雪的特征吸收谷,积雪表面光谱反射率与积雪厚度有关,同时,积雪在不同深度所表现的反射光谱特性也有所差异。Mountainous ice sheet and snow cover play an important role in water balance in many area,and the measurement of it in large area is mainly depending on remote sensing.In order to retrieve the storage volume of snow cover in an area with remote sensing,knowing the spectral feature is prerequisite.In the present paper,the Miyaluo district in northwest of Sichuan province was selected as the study area,twenty four measurement points were laid in study area,and the ASD FieldSpec Pro Ⅲ was selected as the spectral measurement instrument to collect the reflectance spectra of the snow on 21—22,January 2007.Then,the spectrum feature of the snow in the study area was analyzed.The result indicates that 1 026,1 256,1 493 and 1 990 nm are the characteristic absorption valleys,the snow reflectance on the surface has some relation with the snow depth,and also the snow reflectance varies with the depth in the study area.

关 键 词：川西北地区 雪积/雪融 光谱测量 光谱分析 

分 类 号：O657.3[理学—分析化学]