Evaluation method of unsaturated zone soil water consumption characteristics based on overall process of water circulation

Abstract

The invention relates to an unsaturated zone soil water consumption characteristics based on overall process of water circulation. The method comprises the following steps of: building a dynamic conversion model of an unsaturated zone soil water subsystem; simulating circulation of regional unsaturated zone soil water; performing data assimilation of a hydrological model and a remote sensing retrieval of soil water evapotranspiration; determining an evapotranspiration structure; and performing quantitative evaluation on soil water consumption characteristics. According to the invention, an unsaturated zone soil water dynamic conversion model based on sub-watershed spatial dispersion and coupled with a surface and ground water circulation model is used, and the evaluation method of soil water consumption characteristics provided on the basis of the unsaturated zone soil water dynamic conversion model can realize quantitative simulation of soil water in a large spatial scale watershed or region, and quantitative evaluation on consumption characteristics. The method is combined with consumption characteristics evaluation theory of land utilization, and is beneficial for guiding rational utilization of soil water. The technical method provided by the invention is universal and easy to be popularized and applied.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for accurate assessments of soil properties such as how much rain falls over an agricultural field during different stages of its development. It provides a way to measure these differences accurately without relying solely upon physical measurements like temperature or humidity levels that may be affected negatively due to factors other than actual conditions at any given time. By combining both environmental variables (temperature) and gusts into one equation, the system predicts future values more precisely compared against previous results from experiments conducted under similar settings. Overall, this innovation helps optimize crop management strategies while optimizing resource utilization efficiency.

Problems solved by technology

This patents describes how long ago studying changes made across geologically significant regions such as agricultural fields have shown limitations with existing techniques like volumetric analysis (VCA) and numerical simulations. Specifically, they either neglect specific factors involved during the dynamics of evaporative processes within unsaturate layers or use simplified mathematical equations derived through partial differential decomposition. Additionally, previous attempts were limited in their ability to accurately evaluate soil water usage patterns in unsaturaced zones without accounting for both the influence of external sources such as wind and rain.

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