| 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 |
| Key Words: remote sensing data of satellite perpendicular drought index semiarid Loess Plateau relative soil moisture |
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| Abstract: |
| 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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