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Mapping long-term irrigated cropland dynamics in the Yellow River Basin by integrating a nonlinear LST–NDVI feature space with precipitation constraints
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DOI：10.1016/j.ecolind.2026.115305.png)
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Abstract
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• Reconstructing quadratic polynomial dry/wet edge equations for the LST–NDVI feature space across different climatic zones. • Integrating TVDI with a 7-day cumulative precipitation threshold successfully distinguished irrigation-induced wetting signals. • The proposed framework achieved reliable long-term irrigation mapping at the basin scale based on the GEE cloud platform. • Spatiotemporal dynamics of irrigated areas exhibited obvious heterogeneity driven by climate, topography, and policies.
Keywords:
Irrigated cropland mapping
TVDI
LST-NDVI feature space
GEE
Yellow River Basin
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