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| 小花间流域旱情监测模型分析 | |
| 引用本文： | 张友静,陈晨,鲍平勇,王军战,何川. 小花间流域旱情监测模型分析[J]. 干旱区地理, 2009, 32(6) |
| 作者姓名： | 张友静 陈晨 鲍平勇 王军战 何川 |
| 作者单位： | 1. 河海大学水文水资源及水利工程国家重点实验室,江苏南京,210098 2. 河海大学水文水资源及水利工程国家重点实验室,江苏南京,210098;河海大学土木工程学院,江苏南京,2100981 3. 国家海洋局温州海洋环境监测中心站,浙江温州,325027 |
| 摘 要： | 利用2002年5月份的小花间流域的MOD IS数据提取归一化差值植被指数(NDVI)和陆地表面温度(LST),选取合适的NDVI提取窗口尺度,构建LST-NDVI特征空间,采取适宜的干边和湿边的斜率确定方法,计算温度植被干旱指数(TVDI),对小花间流域进行旱情监测,平均相对湿度进行定性验证。结果表明:采用多尺度的像元提取窗口,依据像元直方图确定干边和湿边,建立温度植被干旱指数(TVDI)进行小花间流域旱情监测能够较好反映当地旱情。基于旱情监测模型的生产需要,探讨旱情与地表温度以及归一化植被指数之间的关系,认为地表温度能够反映当地2002年5月份旱情,而归一化植被指数的作用较小。 |
| 关 键 词： | NDVI LST LST-NDVI 多尺度 温度植被干旱指数 |
Drought monitoring model in the Xiaohuajian Valley |
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| ZHANG You-jing,CHEN Chen,BAO Ping-yong,WANG Jun-zhan,HE Chuan. Drought monitoring model in the Xiaohuajian Valley[J]. Arid Land Geography, 2009, 32(6) | |
| Authors: | ZHANG You-jing CHEN Chen BAO Ping-yong WANG Jun-zhan HE Chuan |
| Affiliation: | ZHANG You-jing1,CHEN Chen1,2,BAO Ping-yong3,WANG Jun-zhan1,HE Chuan1(1 State Key Laboratory of Hydrology-Water Resource and Hydraylic Engineering,Hohai University,Nanjing 210098,Jiangsu,China,2 School of Civil Engineering,3 Wenzhou Marine Environmental Monitoring Center Station,Wenzhou 325027,Zhejiang,China) |
| Abstract: | NDVI dataset and Land surface temperature(LST) derived from the MODIS data of Xiaohuajian valley were used to construct the LST-NDVI space,in the help of the appropriate window scale of NDVI's selecting and the dry and wet edges ascertaining methods,from which a dryness index-temperature/vegetation dryness index(TVDI) was suggested.With the help of TVDI,the drought monitoring in Xiaohuajian valley in April in 2002 was classifily statistied.And compared with the average humidiy from the observatories around ... |
| Keywords: | NDVI LST LST-NDVI multi-scale TVDI |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |