| 利用多波段遥感干旱监测方法研究 |
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| 引用本文： | 冷松,武建军,周磊.利用多波段遥感干旱监测方法研究[J].干旱区资源与环境,2013(2):102-107. |
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| 作者姓名： | 冷松 武建军 周磊 |
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| 作者单位： | 北京师范大学地表过程与资源生态国家重点实验室;北京师范大学民政部/教育部减灾与应急管理研究院;北京师范大学环境演变与自然灾害教育部重点实验室;中国环境监测总站 |
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| 基金项目： | 国家自然科学基金(41171403);教育部新世纪优秀人才支持计划(NCET-08-0057)资助 |
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| 摘 要： | 目前对大尺度、复杂地表覆盖类型的区域干旱监测研究仍然是一个难点。文中尝试选择近红外、短波红外、热红外波段组合成新的干旱指数,并选取甘肃定西市、庆阳市、平凉市、宁夏固原市等为研究区。在比较各种不同的干旱指数优缺点的基础上,采用MODIS 1B数据的第2,6波段和LST(Land Surface Tempera-ture)产品合成多波段干旱指数。并用降雨量计算SPI(Standardized Precipitation Index),以及日均相对湿度与多波段干旱指数进行全面比较。结果发现在干旱年份,该指数与气象数据有较好的相关性,说明其在大尺度、较复杂地表覆盖类型区域旱灾监测有一定前景。
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| 关 键 词： | 归一化水分指数 多波段干旱指数 标准化降水指数 干旱 |
The approach of drought monitoring by remote sensing with multiple bands |
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| LENG Song,WU Jianjun,ZHOU Lei.The approach of drought monitoring by remote sensing with multiple bands[J].Journal of Arid Land Resources and Environment,2013(2):102-107. |
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| Authors: | LENG Song WU Jianjun ZHOU Lei |
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| Institution: | 1.State Key Laboratory of Earth Surface Processes and Resources Ecology,Beijing Normal University,Beijing 100875,P.R.China;2.Academy of Disaster Reduction and Emergency Management MCA&MOE,Beijing Normal University,Beijing 100875,P.R.China;3.Key Laboratory of Environmental Change and Natural Disaster,Ministry of Education of China,Beijing Normal University,Beijing 100875,P.R.China;4.China National Environmental Monitoring Center,Beijing 100012,P.R.China) |
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| Abstract: | It is still necessary for researching on monitoring drought accurately over large scale area and complex land cover.The near-infrared,shortwave-infrared,thermal infrared bands were used to combine a new index MBDI in this paper.The study area includes Dingxi,Pingliang,Qingyang of Gansu province and Guyuan of Ningxia province.The products of MODIS were employed to calculate drought index.Then the new index was compared with the meteorological data and the correlation coefficient was calculated.The result shows that MBDI is consistent well with meteorological index.It illustrates that MBDI has the potential to monitor drought in complex land cover of large areas. |
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| Keywords: | normalized difference water index multiple band drought index standardized precipitation index drought |
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