Modeling Soil Water Dynamics Based on the Approach of Compensatory Root Water Uptake

4th International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Li, Cong^1 ; Hu, Zhengfeng^2 ; Zhang, Kefeng^3

College of Civil Engineering and Architecture, Zhejiang University, Hangzhou

310058, China^1

Design and Research Institute of Environmental Protection Sciences of Zhejiang Province, Hangzhou

310007, China^2

Ningbo Institute of Technology, Zhejiang University, Ningbo

315100, China^3

关键词: Agricultural water management;    Efficiency coefficient;    Hydrological modeling;    Hydrological models;    Index of agreements;    Root-water uptake;    Soil water dynamics;    Soil water potential;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/237/3/032092/pdf
DOI  :  10.1088/1755-1315/237/3/032092

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Agro-hydrological models can not only be used to study water dynamics in the soil-crop system, but also be used for agricultural water management. Therefore, it is important to devise this kind of models. In this study, a new agro-hydrological model, based on the compensatory root water uptake approach, was proposed. A dataset from field experiments on cabbage was used to evaluate the reliability of the model. Results showed that the predicted soil water potential at various depths agreed well with the measurements. The Nash-Sutcliffe efficiency coefficient and the Willmott's index of agreement reached to 0.633 and 0.916, respectively, indicating that model was accurately constructed, and could potentially be used for optimizing water use in agriculture.