| 地下水作用下土壤水蓄量变化及其
对蒸发通量影响的模拟 |
| |
| 引用本文： | 黄远洋,陈喜,张志才,郑健.地下水作用下土壤水蓄量变化及其
对蒸发通量影响的模拟[J].河海大学学报(自然科学版),2015,43(6):562-568. |
| |
| 作者姓名： | 黄远洋 陈喜 张志才 郑健 |
| |
| 作者单位： | 河海大学水文水资源与水利工程科学国家重点实验室,江苏 南京210098;
河海大学水文水资源学院,江苏 南京210098;
中国科学院重庆绿色智能技术研究院，重庆 400714,河海大学水文水资源与水利工程科学国家重点实验室,江苏 南京210098;
河海大学水文水资源学院,江苏 南京210098,河海大学水文水资源与水利工程科学国家重点实验室,江苏 南京210098;
河海大学水文水资源学院,江苏 南京210098,河海大学水文水资源与水利工程科学国家重点实验室,江苏 南京210098;
河海大学水文水资源学院,江苏 南京210098;浙江省水利水电勘测设计院, 浙江 杭州310002 |
| |
| 基金项目： | 国家自然科学基金（51079038，40930635，51190091）；江苏省普通高校研究生科研创新计划（CXLX12_ 0250） |
| |
| 摘 要： | 将基于数值积分的土壤水平衡计算与稳态蒸发通量解析解相耦合,提出一种逼近Richards方程的迭代计算模型,分析不同地下水位下土壤水蓄量变化及其对土壤水蒸发量和潜水蒸发量的影响。采用Hydrus-1D模型对迭代模型进行对比验证,并将模型应用于安徽五道沟实验站地下水埋深分别为0.4 m、0.6 m和1.5 m的3个蒸渗仪的土壤水蓄量变化及蒸发通量的模拟。结果表明,迭代模型具有较高的计算精度,能较好地模拟受地下水位以上毛细管力作用的土壤水蓄量动态过程及蒸发通量,还能反演不同地下水埋深下的土壤渗透系数和孔径分布系数。
|
| 关 键 词： | Richards方程 土壤水稳定状态 土壤水蓄量 土壤水蒸发 潜水蒸发 |
Modeling of variation of soil water storage with groundwater
table and
its influences on transpiration flux |
| |
| HUANG Yuanyang,CHEN Xi,ZHANG Zhicai and ZHENG Jian.Modeling of variation of soil water storage with groundwater
table and
its influences on transpiration flux[J].Journal of Hohai University (Natural Sciences ),2015,43(6):562-568. |
| |
| Authors: | HUANG Yuanyang CHEN Xi ZHANG Zhicai and ZHENG Jian |
| |
| Institution: | State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering,
Hohai University, Nanjing 210098, China;College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China;Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences,
Chongqing 400714,
China;,State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering,
Hohai University, Nanjing 210098, China;College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China,State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering,
Hohai University, Nanjing 210098, China;College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China and State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering,
Hohai University, Nanjing 210098, China;College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China;Zhejiang Design Institute of Water Conservancy and Hydroelectric Power, Hangzhou 310002, China |
| |
| Abstract: | An iterative model was proposed to approximate the Richards'' equation by coupling the soil water budget method and the analytical solution of steady state transpiration flux, and was used to analyze the variation of soil water storage with groundwater table and its influences on soil water evaporation and groundwater evaporation. The coupled model was verified against the Hydrus-1D model. Then, the model was applied to simulation of the variation of soil water storage and transpiration flux at the groundwater depths of 0.4 m, 0.6 m, and 1.5 m at the Wudaogou Hydrological Experimental Station in Anhui Province, and the results were compared with observations from three lysimeters. The results indicate that the coupled model can effectively simulate the effects of the groundwater table on soil water storage and evaporation flux under capillary forces, and conduct a reasonable inversion of the hydraulic conductivity and pore size distribution index at different groundwater depths. |
| |
| Keywords: | Richards'' equation steady state of soil water soil water storage soil water evaporation groundwater evaporation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《河海大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《河海大学学报(自然科学版)》下载免费的PDF全文 |
|
