Agricultural drought monitoring method for multi-source remote sensing data

A technology of remote sensing data and remote sensing monitoring, applied in the field of agricultural drought monitoring, can solve the problems of cumbersome implementation, not taking much consideration of soil moisture changes, etc., and achieve the effect of avoiding the low precision of drought monitoring.
CN107782701AInactive Publication Date: 2018-03-09BEIJING NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING NORMAL UNIVERSITY
Publication Date
2018-03-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an agricultural drought monitoring method for multi-source remote sensing data. According to the method, the following most frequently used four categories of agricultural drought remote sensing monitoring indexes (including 16 indexes) are selected: crop canopy temperature change ( 4 indexes), crop form and vegetation greenness change (5 indexes), soil water change (3 indexes) and crop canopy water contents (4 indexes); a constructed comprehensive remote-sensing drought model is checked and corrected by standard potential evapotranspiration indexes SPEI of a monitoringsite of a research region and 20 cm soil moisture status data, and drought of a data acquiring region can be monitored and evaluated in a large range. By the method, agricultural drought can be continuously, dynamically, quantitatively and visually monitored, analyzed and researched on fine space scale, and decision support and information service are provided for prevention and reduction of natural disasters.
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Description

technical field

[0001] The invention relates to the technical field of agricultural drought monitoring, in particular to a method for agricultural drought monitoring based on multi-source remote sensing data. Background technique

[0002] At present, there are many studies on the agricultural drought monitoring index. Under the current climate warming environment, the frequency of drought is gradually increasing, so the platform for drought monitoring and early warning and drought monitoring has become a popular research for many researchers. field.

[0003] Among the current similar technologies, the patent number "Agricultural Drought Monitoring Method Based on MODIS Data" applied by the Shenyang Institute of Applied Ecology, Chinese Academy of Sciences is typically CN200910248457.3: this patent is an agricultural drought monitoring method based on MODIS data. Monitor farmland drought, and use crop water supply index and rainfall anomaly index to determine agricultural dr...

Claims

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