论文标题
浅水桌环境中分层土壤的可变特异性产量的分析表达式
Analytical expressions of variable specific yield for layered soils in shallow water table environments
论文作者
论文摘要
本文介绍了在浅水桌环境中分层土壤的可变特异性收益率的分析表达式，其中引入了两个不同的点特异性产率（SYP）和间隔平均特异性收率（SYI）的概念。 SYP和SYI指的是无限无限地接近零的地下水位波动的特定收率，并且分别是地下水位的间隔波动。基于特定的产量定义和土壤水保留的范氏晶体模型，分析和半分析表达式是针对SYP和SYI朝分层土壤的。通过实验数据和先前表达式进行评估和验证分析表达式。分析表明，我们对SYP和SYI的表达方式可以有效反映在浅水桌条件下受土壤液压特性和土壤层层影响的变化和非线性特性。先前对SYP和SYI的混乱理解也被区分了。针对与地下水建模和管理问题相关的潜在应用，对特定收益率表达的实用性和适用性进行了全面分析。
This paper presents analytical expressions of variable specific yield for layered soils in shallow water table environments, with introducing two distinct concepts of point specific yield (Syp) and interval average specific yield (Syi). The Syp and Syi refer to the specific yield for the water table fluctuation approaching zero infinitely and that for an interval fluctuation of water table, respectively. On the basis of specific yield definition and van Genuchten model of soil water retention, the analytical and semi-analytical expressions were respectively proposed for Syp and Syi towards layered soils. The analytical expressions are evaluated and verified by experimental data and comparison with the previous expressions. Analyses indicate our expressions for Syp and Syi could effectively reflect the changes and nonlinear properties affected by soil hydraulic properties and soil layering under shallow water table conditions. The previously confused understanding of Syp and Syi are also distinguished. The practicality and applicability for the specific yield expressions are comprehensively analyzed for the potential applications related to the subsurface water modeling and management issues.
