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| 基于MODIS数据的广西旱区干旱指数模型研究 | |
| 引用本文： | 匡昭敏,朱伟军,杨鑫,黄永璘,何立,孙涵.基于MODIS数据的广西旱区干旱指数模型研究[J].南京气象学院学报,2007,30(3):352-358. |
| 作者姓名： | 匡昭敏 朱伟军 杨鑫 黄永璘 何立 孙涵 |
| 作者单位： | 1. 南京信息工程大学,大气科学学院,江苏,南京,210044;国家卫星气象中心,遥感应用试验基地,广西,南宁,530022;广西气象减灾研究所,广西,南宁,530022 2. 南京信息工程大学,大气科学学院,江苏,南京,210044 3. 国家卫星气象中心,遥感应用试验基地,广西,南宁,530022;广西气象减灾研究所,广西,南宁,530022 |
| 基金项目： | 广西壮族自治区气象局重点科研项目 |
| 摘 要： | 根据EOS/MODIS数据,采用植被状态指数(VCI)和温度条件指数(TCI)构建干旱指数(DI)遥感监测模型,应用于2004、2005年9-11月的广西旱情监测,制作了旱情时空变化的遥感图像,并与旱情实况数据进行对比分析,验证了干旱指数DI的有效性.通过对DI与TCI、VCI、NDVI和LST的相关性分析,发现TCI、VCI比LST、NDVI与DI的相关更显著,以TCI和VCI为因子构建的DI模型更适用于桂中旱区的旱情遥感监测. |
| 关 键 词： | 干旱指数 MODIS 遥感监测 MODIS 数据 广西 旱区 干旱指数 指数模型 研究 Data Based Guangxi Central Arid Area Model Index Drought 旱情遥感监测 因子 相关性分析 发现 NDVI |
| 文章编号： | 1000-2022（2007）03-0352-07 |
| 修稿时间： | 2006-04-242006-10-19 |
Study on Drought Index Model of Arid Area in Central Guangxi Based on MODIS Data |
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| KUANG Zhao-min,ZHU Wei-jun,YANG Xin,HUANG Yong-lin,HE Li,SUN Han.Study on Drought Index Model of Arid Area in Central Guangxi Based on MODIS Data[J].Journal of Nanjing Institute of Meteorology,2007,30(3):352-358. | |
| Authors: | KUANG Zhao-min ZHU Wei-jun YANG Xin HUANG Yong-lin HE Li SUN Han |
| Institution: | 1, School of Atmospheric Sciences,NUIST,Nanjing 210044,China; 2. Remote Sensing Application and Validation Base of NSMC, Nanning 530022,China ; 3. Guangxi Meteorological Disaster Mitigation Institute,Nanning 530022,China |
| Abstract: | Land surface temperature derived from brightness temperatures and NDVI from MODIS data are used to calculate TCI and VCI,respectively with which a dryness index(DI) is then constructed.The temporal-spatial distribution of drought in central Guangxi from September to November in 2004 and 2005 is studied by using the DI.DI's temporal-spatial pattern is compared with the real drought condition from the observatories around Guangxi,thus DI's validity in evaluating drought is verified.Afterward,the correlation coefficients of DI with TCI,VCI,LST and NDVI are evaluated.The results show that TCI and VCI have closer relation with drought than LST and NDVI,suggesting that dryness indexes based on TCI and VCI in this paper are reasonable for Guangxi central arid area. |
| Keywords: | drought index MODIS remote sensing monitoring |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |