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中国沙漠 ›› 2022, Vol. 42 ›› Issue (6): 233-242.DOI: 10.7522/j.issn.1000-694X.2022.00045

• • 上一篇    

基于Hydrus-1D模型的毛乌素沙地杨柴( Hedysarum laeve )灌木林土壤含水量模拟

洪光宇1(), 王晓江1(), 刘铁山1, 海龙1, 吴振廷1, 胡尔查1, 高孝威1, 杨海峰1, 李卓凡1, 李梓豪1, 斯琴2, 王乐军1   

  1. 1.内蒙古自治区林业科学研究院,内蒙古 呼和浩特 010010
    2.扎鲁特旗草原技术服务中心,内蒙古 扎鲁特旗 029100
  • 收稿日期:2022-02-10 修回日期:2022-03-22 出版日期:2022-11-20 发布日期:2023-01-09
  • 通讯作者: 王晓江
  • 作者简介:王晓江(E-mail: xjwang_21cn@163.com
    洪光宇(1985—),女,内蒙古呼和浩特市人,博士,副研究员,研究方向为沙地水资源管理与应用。E-mail: nmghgy@163.com
  • 基金资助:
    内蒙古自治区自然科学基金项目(2019MS03036);内蒙古重大专项(2019ZD007);国家自然科学基金项目(41867043)

Applicability of Hydrus-1D Model in simulating the soil moisture in Hedysarum leave in Mu Us Sandy LandChina

Guangyu Hong1(), Xiaojiang Wang1(), Tieshan Liu1, Hailong1, Zhenting Wu1, Huercha1, Xiaowei Gao1, Haifeng Yang1, Zhuofan Li1, Zihao Li1, Siqin2, Lejun Wang1   

  1. 1.Inner Mongolia Forestry Research Institute,Hohhot 010010,China
    2.Grassland Technologic Service Center of Zarut Banner,Zarut Banner 029100,Inner Mongolia,China
  • Received:2022-02-10 Revised:2022-03-22 Online:2022-11-20 Published:2023-01-09
  • Contact: Xiaojiang Wang

摘要:

在干旱半干旱区植被恢复与重建过程中,土壤储水量会发生明显变化。土壤水分是限制植被生长的主要因子,运用数学模拟的方法研究植被建设后土壤水分变化特征,能更快预测土壤水分的亏缺情况。本研究选用Hydrus-1D模型,模拟毛乌素沙地典型灌木林杨柴(Hedysarum laeve)群落的土壤水分空间和时间变化,评估Hydrus-1D模型在毛乌素沙地杨柴人工林地的适用性。以杨柴生长季为研究期,通过调查的各项实测值带入Hydrus-1D模型并对参数进行优化后模拟杨柴群落土壤水分时间和空间的变化过程,利用同时间段Watchdog土壤水分监测仪连续监测的不同土层土壤含水量数据作为对照值验证其模拟值的适用性。结果表明:研究区飞播杨柴灌木林地不同深度土壤水分实测值与模拟值的决定系数0.55—0.78,均方根误差0.005%—0.0143%,实测值与模拟值具有较好的一致性,说明Hydrus-1D模型适用于模拟毛乌素沙地杨柴灌木林土壤剖面的水分变化。

关键词: 毛乌素沙地, 杨柴灌木林, 土壤水分, Hydrus-1D模型, 适用性

Abstract:

In the process of vegetation restoration and reconstruction in arid and semi-arid areas, soil water storage will change obviously, and soil water is the main factor limiting vegetation growth. Using mathematical simulation method to study the characteristics of soil water change after vegetation construction can predict soil water deficit under global climate change more quickly. In this study, the Hydrus-1D model was used to simulate the spatial and time variation of soil moisture in a typical Hedysarum leave shrubbery community in the Mu Us Sandy Land, and to evaluate the applicability of the Hydrus-1D model in the H. leave shrubbery in the Mu Us Sandy Land. Taking H. leave growing season as the study period. The measured values were put into the Hydrus-1D modell and the parameters were optimized to simulate the spatial and time variation of soil moisture in H. leave shrubbery. The soil moisture data of different soil layers monitored by Watchdog soil moisture monitor in the same time period were used as the control value to verify the applicability of the simulated value. The results showed that the coefficients of measured soil moisture and simulated soil moisture at different depths were in the range of 0.55-0.78, and the root mean square error was 0.005%-0.0143%. The measured soil moisture and simulated soil moisture were in good agreement, indicating that the Hydrus-1D model was suitable for simulating the soil moisture variation of H. leave shrubbery in Mu Us Sandy Land.

Key words: Mu Us Sandy Land, Hedysarum leave shrubbery, soil moisture, Hydrus-1D Model, applicability

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