| 蒋友严，韩 涛,徐 燕，王小巍，王大为.基于多源卫星数据的3种干旱遥感监测效果比较[J].干旱地区农业研究,2014,32(2):47~51 |
| 基于多源卫星数据的3种干旱遥感监测效果比较 |
| Comparison of drought monitoring effects based on multi-source remote sensing data of satellite |
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| DOI：10.7606/j.issn.1000-7601.2014.02.008 |
| 中文关键词: 遥感卫星数据 垂直干旱指数 黄土高原半干旱区 土壤相对湿度 |
| 英文关键词:remote sensing data of satellite perpendicular drought index semiarid Loess Plateau relative soil moisture |
| 基金项目:科技部农业科技成果转化资金项目（2011GB24160005） |
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| 中文摘要: |
| 基于MODIS/TERRA、FY-3B/MERSI和HJ/CCD监测数据，结合研究区同步土壤湿度实测资料，利用垂直干旱指数（PDI），对比分析了各传感器在干旱时空动态中对旱情响应的敏感性和可靠性。结果显示：在黄土高原半干旱区各遥感卫星监测到的PDI指数与土壤相对湿度呈显著负相关，与0～20 cm相对湿度相关最为密切；MODIS的PDI监测信息与实际春旱发展前期状况最为接近，HJ的PDI监测信息对干旱后期效应性相对较差， HJ、MODIS和FY3B的PDI监测信息都能够比较真实的反映干旱缓解后的实际情况。 |
| 英文摘要: |
| Based on the MODIS/TERRA, FY-3B/MERSI and HJ/CCD monitoring data, combined the synchronous measured soil moisture data in research area, using the perpendicular drought index (PDI), comparatively analyzed the sensitivity and reliability of various sensors responded to drought. The r
esults showed that: It was the negative correlation between the PDI indexes with the soil relative moisture from the various remote sensing of satellites in the semiarid Loess Plateau, and it was the most close with the relative soil moisture in 0～20 cm depth, also the monitoring PDI index of the MODIS was more close with the real situation in early spring drought development, but the PDI monitoring information of HJ was relatively poor to drought effects in late, the whole PDI monitoring information of the HJ, MODIS and FY3B can be reflected the actual situation after the drought relieved. |
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