Method and device for calculating spatiotemporal dynamic distribution of soil evapotranspiration, equipment and medium
By acquiring underlying surface and meteorological data within the study area, analyzing soil freeze-thaw conditions, and calculating the actual evapotranspiration of different soil layers, the problem of accurately calculating the spatiotemporal dynamic distribution of soil evapotranspiration was solved, thereby improving the accuracy of hydrological models and the effectiveness of water resource management.
CN122242336APending Publication Date: 2026-06-19YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
- Filing Date
- 2026-03-04
- Publication Date
- 2026-06-19
AI Technical Summary
⚠Technical Problem
Existing technologies struggle to accurately calculate the spatiotemporal dynamics of soil evapotranspiration, impacting the accuracy of hydrological models and water resource management strategies.
⚗Method used
By acquiring underlying surface data and meteorological data for each grid cell in the study area, the spatiotemporal distribution of soil freeze-thaw status is analyzed. Combined with the actual ice content and water content of different soil layers, the actual evapotranspiration is calculated, and accurate calculations are performed using computing devices and media.
🎯Benefits of technology
It improves the accuracy of soil evapotranspiration calculation, enhances the accuracy of hydrological models, and optimizes water resource management.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention discloses a method, apparatus, equipment, and medium for calculating the spatiotemporal dynamic distribution of soil evapotranspiration. The method includes: acquiring underlying surface data and meteorological data for each grid cell within a target time period; performing soil state analysis based on the underlying surface data and meteorological data to determine the spatiotemporal distribution of soil freeze-thaw state for the target grid cell within the target time period, wherein the target grid cell is any grid cell among all grid cells in the study area; and calculating evapotranspiration based on the spatiotemporal distribution of soil freeze-thaw state, underlying surface data, and meteorological data for the target grid cell within the target time period to determine the actual spatiotemporal dynamic distribution of evapotranspiration for each grid cell within the study area within the target time period. This invention considers the influence of soil freeze-thaw state on soil evapotranspiration when calculating actual soil evapotranspiration. By determining the freeze-thaw state of the soil at different times, the actual evapotranspiration at different times is determined, making the calculated actual evapotranspiration more accurate.
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