| 衡邵干旱走廊监测中TVDI模型构建与预警 |
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| 引用本文： | 龙城仕,王辉.衡邵干旱走廊监测中TVDI模型构建与预警[J].测绘通报,2019,0(5):116-120. |
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| 作者姓名： | 龙城仕 王辉 |
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| 作者单位： | 湖南省第一测绘院,湖南 衡阳,421000;湖南省第一测绘院,湖南 衡阳,421000 |
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| 摘 要： | 介绍了衡邵干旱走廊地理国情监测中监测数据的来源、MODIS产品处理与分析、地表温度(LTS)、植被指数(NDVI)的获取、数据处理方法、TVDI产品处理、TVDI制备中地表温度产品、植被指数产品订正及TVDI分级产品制备。同时介绍了TVDI模型构建及预测方法并构建了适宜的TVDI与温度、相对湿度之间的线性回归TVDI预测模型,并对干旱风险的风险概率、灾害损失进行了预警。
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| 关 键 词： | 衡邵干旱走廊 地理国情监测 温度植被干旱指数 模型 构建与预警 |
| 收稿时间： | 2018-04-11 |
| 修稿时间： | 2018-12-24 |
Construction and early warning of TVDI model in the condition monitoring of arid corridor in Hengyang and Shaoyang |
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| LONG Chengshi,WANG Hui.Construction and early warning of TVDI model in the condition monitoring of arid corridor in Hengyang and Shaoyang[J].Bulletin of Surveying and Mapping,2019,0(5):116-120. |
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| Authors: | LONG Chengshi WANG Hui |
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| Affiliation: | The First Surveying and Mapping Institute of Hunan Province, Hengyang 421000, China |
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| Abstract: | This paper introduces the acquisition of surface temperature (LTS), vegetation index (NDVI), data processing method and TVDI preparation in the monitoring of the conditions of arid corridors in Hengyang and Shaoyang city.Then, we use AHP to build and predict drought TVDI model, and build a suitable TVDI model and temperature, linear regression TVDI prediction model between relative humidity,and predict risk probability and disaster loss of drought risk. |
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| Keywords: | dry crridor of HengYang and ShaoYang city monitoring of geographical conditions TVDI index model construction and early warning |
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