Index: Crop water stress index
Crop water stress index
Basic information
Name | Crop water stress index |
---|---|
Abbreviation | CWSI |
Formula | |
Variables | |
Expl. of Variables | where points A and B represent the surface minus air temperature difference at a particular percent cover for a non-stressed and completely stressed crop, respectively, with a dry soil background. Points to the left of the line formed between points 1 |
Wavelengths | |
Source | Original formula |
Description | Based on canopy temperature and meteorological conditions where points A and B represent the surface minus air temperature difference at a particular percent cover for a non-stressed and completely stressed crop, respectively, with a dry soil background. Points to the left of the line formed between points 1 and 4 represent a moist soil background and no water stress is assumed under these conditions. Point C was determined based on the measured NDVI and surface – air temperature difference. From Eq. [2], a CWSI of 0 corresponds to a well-watered crop with a dry soil background, while 1 represents a water-stressed crop. |
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Sensors
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Applications
Nr. | Name | Comment |
---|---|---|
1 | Agriculture | |
2 | Agriculture - Crop parameters | |
3 | Agriculture - Precision Crop Management | |
4 | Vegetation - Stress | |
5 | Vegetation - Water | |
6 | Vegetation - Water stress |
References
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