| 基于MODIS资料的遥感干旱监测业务化方法研究 |
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| 引用本文： | 张树誉,杜继稳,景毅刚.基于MODIS资料的遥感干旱监测业务化方法研究[J].干旱地区农业研究,2006,24(3):1-6. |
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| 作者姓名： | 张树誉 杜继稳 景毅刚 |
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| 作者单位： | 陕西省农业遥感信息中心,陕西,西安,710014;陕西省气象局,陕西,西安,710014 |
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| 基金项目： | 陕西省气象局重点科研项目 |
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| 摘 要： | MODIS在波段设置和探测精度方面较AVHRR有较大的优势,如何将传统的基于AVHRR数据的遥感干旱监测模型转移到MODIS数据平台是遥感干旱监测领域非常关注的问题。我们从可业务化的角度,在借鉴陕西省农业遥感信息中心近年研究开发的NOAA/AVHRR遥感干旱监测业务化模型的基础上,结合陕西的地形、气候、植被覆盖特征,建立了基于MODIS数据的区域性干旱遥感监测的业务化模型和资料处理流程,并在陕西2005年3-5月发生的较严重的春旱过程中进行了监测试验。结果表明:使用基于MODIS数据的热惯量和植被供水指数两种模型进行区域性遥感干旱监测是可行的,修改后的植被供水指数模型在干旱面积估算精度和图像的可视化效果方面有了明显提高。
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| 关 键 词： | MODIS 干旱监测 陕西 |
| 文章编号： | 1000-7601（2006）03-0001-06 |
| 收稿时间： | 2005-10-20 |
| 修稿时间： | 2005年10月20 |
Astudy on routine operation remote sensing drought monitoring model using MODIS data |
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| ZHANG Shu-yu,DU Ji-wen,JING Yi-gang.Astudy on routine operation remote sensing drought monitoring model using MODIS data[J].Agricultural Research in the Arid Areas,2006,24(3):1-6. |
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| Authors: | ZHANG Shu-yu DU Ji-wen JING Yi-gang |
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| Abstract: | MODIS has advantages in band set and explore precision.That how the tradition drought monitoring model using AVHRR data can be changed to using MODIS data is an important problem in drought monitoring field.Based on the work of routine operation remote sensing drought monitoring model using NOAA/AVHRR data in recent years,the regional drought monitoring model using MODIS data and the work flow to process the remote sensing data were established.Landform,climate and vegetation coverage of Shaanxi province were also considered in this model.Using the established model and work flow,the severe spring drought in Shaanxi province was successfully monitored in 2005.The results show that: using MODIS data,the thermal inertia model and vegetation supply water index(VSWI) model were feasible for monitoring region drought.The modified VSWI model can improve the precision of drought area estimation and visual effects of images. |
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| Keywords: | MODIS |
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