Biparabolic NDVI-T<sub>s</sub> Space and Soil Moisture Remote Sensing in an Arid and Semi arid Area
Why this work is in the frame
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Bibliographic record
Abstract
. Normalized difference vegetation index (NDVI) and land surface temperature (Ts) data from the multitemporal Moderate Resolution Imaging Spectroradiometer (MODIS) were used to analyze the NDVI-Ts space. Unlike the traditional triangular or trapezoidal NDVI-Ts space, the NDVI-Ts space in this study was biparabolic when NDVI values below 0.15 were included, describing areas that are vegetated but have low biomass due to arid conditions. Moreover, the NDVI-Ts biparabolic space is slightly better than the NDVI-Ts triangular space at discerning soil moisture (validation at a 10-cm depth). Linear relationships exist between TVDIC obtained from the NDVI-Ts biparabolic space and relative soil moisture with R2 > 0.28, while correlation coefficient between TVDIT obtained from the triangular NDVI-Ts space and relative soil moisture is R2 > 0.08. The soil moisture situations in Henan Province from February 26, 2011 to May 16, 2011 and in the Shendong mining area on October 8, 2010 were evaluated based on the temperature vegetation dryness index (TVDI) obtained from the NDVI-Ts biparabolic space. Moreover, the general spatiotemporal features of soil moisture conditions in Henan Province and the Shendong mining area were revealed.Résumé. Des données de l’indice de végétation par différence normalisé (NDVI) et de la température de la surface terrestre (Ts) du spectroradiomètre imageur à résolution moyenne «Moderate Resolution Imaging Spectroradiometer» (MODIS) ont été utilisées pour analyser l’espace NDVI-Ts. Contrairement à l’espace traditionnel NDVI-Ts qui est triangulaire ou trapézoïdal, l’espace NDVI-Ts dans cette étude était biparabolique lorsque les valeurs de NDVI inférieures à 0,15 ont été incluses, décrivant les régions qui ont un couvert végétal, mais qui ont une faible biomasse en raison des conditions arides. En outre, l’espace biparabolique NDVI-Ts est légèrement mieux que l’espace triangulaire NDVI-Ts pour discerner l’humidité du sol (validation à une profondeur de 10 cm). Des relations linéaires existent entre le TVDIC obtenu à partir du NDVI-Ts biparabolique et l’humidité du sol relative avec R2 > 0,28, tandis que le coefficient de corrélation entre le TVDIT obtenu à partir de l’espace NDVI-Ts triangulaire et l’humidité du sol relative est R2 > 0,08. L’humidité du sol dans la province du Henan du 26 février 2011 au 16 mai 2011 et dans la région d’exploitation minière Shendong le 8 octobre 2010 a été évaluée sur la base de l’indice de température-sécheresse de la végétation (TVDI) obtenu à partir de l’espace biparabolique NDVI-Ts. En outre, les caractéristiques générales spatio-temporelles de conditions d’humidité du sol dans la province du Henan et la zone minière Shendong ont été révélées.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it