【作者】 乌云高娃； 银山； 包玉海； 王永芳；

【Author】 Wuyungaowa;Yinshan;Yuhai Bao;Yongfang Wang;School of Geographical Sciences,Inner Mongolia Normal University;Inner Mongolian Key Laboratory of Remote Sensing &Geography Information System;School of Environment,Northeast Normal University,Institute of Natural Disaster Research,Northeast Normal University;

【机构】 内蒙古师范大学地理科学学院； 内蒙古自治区遥感与地理信息系统重点实验室； 东北师范大学环境学院； 东北师范大学自然灾害研究所；

【摘要】 本论文运用一个新型的多源传感器微波遥感干早指数,即微波综合干早指数监测锡林郭勒盟短期气象干早。微波综合干早指数通过综合以下三个变量实现:热带降雨测量卫星获得的降水数据、地球观测系统EOS-PM Aqua卫星(水星)所搭载的先进微波扫描辐射计所获得的土壤湿度和地表温度数据。利用熵权法对以上三个变量进行赋权构建微波综合干早指数,将其与相同时间尺度的标准化降水指数(SPI)进行皮尔逊相关分析,得出微波综合千早指数最优组合形式—MIDI。并利用内蒙古民政局提供的锡林郭勒盟干早资料对MIDI进行验证。最后运用MIDI对2005年至2009年锡林郭勒盟7月份干旱进行监测。结果显示:(1)2006年至2009年,锡林郭勒盟7月份大多地区发生轻度干早。(2)锡林郭勒盟东乌珠穆沁旗西南部、西乌珠穆沁旗西北部地区及多伦县周围地区的干早程度相对较轻;锡林郭勒盟二连浩特市周围地区干早程度相对较重;锡林郭勒盟中部地区干早程度年际变化较大。更多还原

【Abstract】 We used a new type of multi-source sensor drought index of microwave remote sensing which named microwave integrated drought index to monitor the short-term drought in Xilingol League.Microwave integrated drought index achieved through combination of rainfall data of tropical rainfall measuring satellite,soil moisture and surface temperature data obtained from EOS-PM Aqua satellite earth observation system.Three variables are empowered to build microwave integrated drought index by using entropy weight method.Midi,which is the best combination of microwave integrated drought index,was obtained from the Pearson correlation analysis between the drought indexes and standardized precipitation indexes(SPI) at the same time scales.Drought information in Xilingol League is used to verify the reliability of the MIDI.The droughts of Xilingol League in In July from year 2005 to 2009 are monitored by using MIDI.(l)The result showed that the most part of Xilingol League has occurred mild drought in July from 2005 to 2009.(2)Drought degree in southwest part of East Ujimqin Banner,northwest part of Right Ujimqin Banner and surrounding areas of Duolun County is comparatively light;the drought degree in Erenhot City is comparatively heavy;annual variation of drought degree is more larger in the central part of Xilingol League.更多还原