摘要
为了对三北防护林体系和科尔沁沙地的沙漠化进行监测,选择内蒙古翁牛特旗作为实验区,利用LandsatTM遥感数据对实验区进行了地表比辐射率估计和陆面温度反演。文中采用普适单通道法、单窗算法和地表绝对温度反演算法进行温度反演,3种算法均能较好地反映地表温度的空间分布趋势。通过利用野外考察实测温度数据对3种反演算法进行验证,结果表明:地表绝对温度算法得到的地表温度与地面实测值最为接近。实验结果为三北防护林和科尔沁沙地沙漠化监测奠定了部分数据基础。
Focusing on monitoring desertification the Three-North Shelter belt and Horqin Sandy area, the paper selected Wengniute County, Inner Mongolia as an experimental area, retrieved the surface emissivity and land surface temperature and used Landsat TM remote sensing using universal single-channel algorithm, mono--window algorithm and surface absolute temperature Retrieved temperature, three kinds of algorithms were able to better reflect the spatial distribution of surface temperature trends. Used Fieldwork temperature measured data on three kinds of anti-algorithms for authentication, The results showed that the surface temperature by the absolute surface temperature algorithm was near the ground measured data. The experimental results laid the part foundation of the data for the Three-North Shelter belt and Horqin sandy land desertification monitoring.
出处
《水资源与水工程学报》
2009年第4期62-66,共5页
Journal of Water Resources and Water Engineering
基金
辽宁省教育厅创新团队项目:辽宁省工矿区地表沉陷与生态环境灾害监测及演变机理研究(2007308003)
辽宁省重点实验室项目:基于RS与GIS的矿区地表灾害监测与信息管理研究(2007T073)
关键词
地表温度反演
比辐射率
普适单通道算法
单窗算法
地表绝对温度算法
retrieving surface temperature
emissivity
universal single-channel algorithm
mono-window algorithm
surface absolute temperature algorithm
