HYDRUS-1D模型模拟渭北旱塬深剖面土壤水分的适用性

doi:10.13287/j.1001-9332.201902.009

应用生态学报 ›› 2019, Vol. 30 ›› Issue (2): 398-404.doi: 10.13287/j.1001-9332.201902.009

• 土壤物理与生态环境专栏 • 上一篇下一篇

HYDRUS-1D模型模拟渭北旱塬深剖面土壤水分的适用性

李冰冰¹,王云强²,李志^1*

¹西北农林科技大学资源环境学院, 陕西杨凌 712100;
²中国科学院地球环境研究所, 黄土与第四纪地质国家重点实验室, 西安 710061

收稿日期:2018-06-19 修回日期:2018-12-11 出版日期:2019-02-20 发布日期:2019-02-20
通讯作者: E-mail:lizhibox@nwafu.edu.cn
作者简介:李冰冰,女,1994年生,博士研究生.主要从事水文水资源研究.E-mail:438660056@qq.com
基金资助:
本文由中国科学院国际伙伴计划项目(161461KYSB20170013)和国家自然科学基金项目(U1703124,41471189)资助

Applicability of HYDRUS-1D model in simulating the soil moisture in deep profiles on the Weibei rainfed highland, China.

LI Bing-bing¹, WANG Yun-qiang², LI Zhi^1*

¹College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi China;
²State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, China

Received:2018-06-19 Revised:2018-12-11 Online:2019-02-20 Published:2019-02-20
Supported by:
This work was supported by the International Partnership Program of the Chinese Academy of Sciences (161461KYSB20170013) and the National Natural Science Foundation of China (U1703124, 41471189).2018-06-19 Received, 2018-12-11 Accepted.*

摘要/Abstract

摘要： 黄土高原生态恢复过程中,深剖面土壤水分平衡状况发生了重要变化,但传统观测方法难以量化深层渗漏等水文变量,需要借助模型进行分析.本研究利用HYDRUS-1D模型,模拟渭北旱塬长武塬农地和苹果园10 m深剖面土壤水分的垂直分布和时间变化,评价模型的适用性.基于2011年9月—2013年10月观测的土壤水分数据,通过优化土壤水力参数,模拟深剖面土壤水分空间和时间的离散化过程.结果表明: 校准期和验证期,HYDRUS-1D模型的决定系数在0.65～0.85、模型效率系数在0.55～0.83、土壤水分的均方根误差在0.01～0.02 cm³·cm^-3.实测与模拟土壤水分的剖面分布和时间变化状况具有很好的一致性,表明HYDRUS-1D可以用于模拟渭北旱塬深剖面的土壤水文状况.

关键词: HYDRUS-1D模型, 渭北旱塬, 土壤水分, 深剖面

Abstract: Soil water balance has been greatly changed with the implementation of ecological restoration in the Loess Plateau. Some hydrological variables, such as deep drainage, can be hardly determined by traditional monitoring methods, and thus need to be analyzed by models. We simulated vertical distribution and time variation of soil moisture within 10 m profiles under a farmland and apple orchard by HYDRUS-1D model, and further evaluated model applicability. Based on observation from September 2011 to October 2013, the spatial and temporal discretization of soil water was simulated with calibrated soil hydraulic parameters. For the calibration and validation periods, HYDRUS-1D performed well with coefficient of determination of 0.65-0.85, model efficiency coefficients of 0.55-0.83, and root mean square errors from 0.01 to 0.02 cm³·cm^-3. The simulated soil water contents had similar vertical distribution and temporal variation as the observation, implying that HYDRUS-1D was suitable for simulation of soil hydrology in deep profiles on the Weibei rainfed highland.

Key words: deep profiles, HYDRUS-1D model, Weibei rainfed highland, soil moisture

李冰冰,王云强,李志. HYDRUS-1D模型模拟渭北旱塬深剖面土壤水分的适用性[J]. 应用生态学报, 2019, 30(2): 398-404.

LI Bing-bing, WANG Yun-qiang, LI Zhi. Applicability of HYDRUS-1D model in simulating the soil moisture in deep profiles on the Weibei rainfed highland, China.[J]. Chinese Journal of Applied Ecology, 2019, 30(2): 398-404.

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HYDRUS-1D模型模拟渭北旱塬深剖面土壤水分的适用性

Applicability of HYDRUS-1D model in simulating the soil moisture in deep profiles on the Weibei rainfed highland, China.

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