摘要
为构建都江堰灌区优化配水系统,基于MODIS数据对都江堰灌区大区域遥感墒情提取方法进行了研究。首先对Modis和地面实测数据来源、特点进行描述,然后基于MODIS1B遥感数据及区域特征建立都江堰灌区大区域墒情提取模型,在实际计算基础上进行了数学模型优选和参数率定并对表层土壤墒情分别进行了反演,获得了都江堰灌区表层土壤墒情分布图,最后对结果进行了分析。
In order to construct optimizing water distribution system in Dujiang weir irrigation area, this article studies on the method for soil moisture extraction of large region in Dujiang weir irrigation area from MODIS remote sensing data. Firstly, data source, characteristics of MODIS and data measured at ground surface are described. Then soil moisture extraction model is established based on MODIS 1B remote sensing data and regional features, optimization of mathematical models and parameter calibration are made on the basis of actual calculation. Through respective inversion of surface soil moisture, distribution map for surface soil moisture of D＇ujiang weir irrigation area is obtained as well. Finally, analysis on results is made.
出处
《水利水文自动化》
2008年第3期14-18,共5页
Automation in Water Resources and Hydrology
基金
水利部科技创新项目资助(XDS2004-01)
关键词
都江堰
灌区
大区域
遥感
MODIS
墒情
植物指数
Dujiang Weir
irrigation area
large region
remote sensing
MODIS
soil moisture
plant index
