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当前位置: 首页 > 文章 > 基于多尺度遥感数据的荒漠化草原旱情监测及时空特征 江苏农业学报 2017 (6) 1301-1308
Position: Home > Articles > Study on drought monitoring and spatial and temporal characteristics of desertification grassland based on multi-scale remote sensing data Jiangsu Journal of Agricultural Sciences 2017 (6) 1301-1308

基于多尺度遥感数据的荒漠化草原旱情监测及时空特征

作  者：
韩刚;李瑞平;王思楠;田鑫;胡勇平;樊爱霞;孙燕
单  位：
内蒙古水利水电勘测设计院;内蒙古农业大学水利与土木建筑工程学院;包头市鑫港工程监理有限公司
关键词：
多源数据;TVDI;含水率;旱情监测
摘  要：
本研究以Landsat8/ETM+与MODIS遥感数据作为数据源,利用TVDI模型对乌审旗土壤含水率进行遥感监测。首先通过时空尺度推演方法将Landsat8/ETM+反演的30 m空间分辨率TVDI对MODIS反演的1 km空间分辨率TVDI进行空间尺度推演,然后与单独利用MODIS数据监测含水率结果以及野外含水率实测数据进行对比分析,最后采用TVDI时间推演方法获得TVDI月合成数据监测乌审旗旱情时空分布状况。结果表明:多尺度遥感模型对MODIS反演的TVDI进行空间尺度推演,使得TVDI空间分辨率提高,土壤含水率监测精度得到提高,并可获得高时间、高空间分辨率TVDI数据,最终实现高频率的区域土壤干旱状况动态监测。采用时空推演方法获得的TVDI月合成数据监测乌审旗旱情时空分布状况与研究区实际状况极为相符,此方法对于进一步服务该区域农牧业生产具有重要意义。
译  名：
Study on drought monitoring and spatial and temporal characteristics of desertification grassland based on multi-scale remote sensing data
作  者：
HAN Gang;LI Rui-ping;WANG Si-nan;TIAN Xin;HU Rong-ping;FAN Ai-xia;SUN Yan;Water Censervancy and Civil Engineer College,Inner Mongolia Agricultural University;Inner Mongolia Water Conservancy and Hydropower Survey and Design Institute;Baotou Xin Port Engineering Supervison Co.,Ltd;
关键词：
multi-source data;;TVDI;;moisture content;;drought monitoring
摘  要：
In this paper,Landsat8/ETM + and MODIS remote sensing data were used as data sources,and TVDI model was used to monitor soil moisture content in Wushen County. TVDI of 30 m spatial resolution inversed by Landsat8/ETM + was used to deduce TVDI of 1 km spatial resolution inversed by MODIS using the spatial scale deduction method,and with the use of MODIS data alone monitoring soil moisture content and field moisture content of the measured data for comparative analysis. Finally,TVDI monthly synthetic data which obtained by time deduction method were used to monitor the temporal and spatial distribution of drought in Wushen County. The experimental results showed that the multi-scale remote sensing model made a spatial scale deduction of TVDI inversion of MODIS,which improved the spatial resolution of TVDI,improved the monitoring accuracy of soil moisture content and obtained high temporal and spatial resolution TVDI data,and finally achieved high frequency monitoring of the regional soil drought. The temporal and spatial distribution of drought in Wushen County was consistent with the actual situation of the study area. This method showed great significance to further serve the agricultural and livestock production in this area.

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