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Simulation method for salinized seasonal freeze-thawed soil evaporation

A technology of soil evaporation and simulation method, applied in the direction of climate sustainability, design optimization/simulation, CAD numerical modeling, etc., can solve the problems of not considering salinity, changing the evaporation law of frozen and thawed soil, etc.

Active Publication Date: 2020-12-01
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, in salinized seasonally frozen soil regions, salinity can significantly affect and change the evaporation law of freeze-thaw soil, but these evaporation simulation methods do not consider the influence of salinity

Method used

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  • Simulation method for salinized seasonal freeze-thawed soil evaporation
  • Simulation method for salinized seasonal freeze-thawed soil evaporation
  • Simulation method for salinized seasonal freeze-thawed soil evaporation

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Embodiment Construction

[0056] For a better understanding of the present invention, the following examples are further descriptions of the present invention, but the content of the present invention is not limited to the following examples.

[0057] like figure 1 Shown, the present invention provides a kind of simulation method of salinization seasonal freeze-thaw soil evaporation, comprises the steps:

[0058] Step 1: Collect the soil information in the soil column experiment, including the initial information of the soil profile (soil profile water rate, profile salinity, profile temperature, and soil bulk density), soil moisture characteristic curve, and soil salinity control parameters.

[0059] There are two groups of test soil columns in this example, denoted as B1 and B2, and each group contains 4 soil columns with the same treatment, a total of 8 soil columns. Each soil column is 3m long and 5cm in diameter. The first 2m of the soil column is the unsaturated section, and the last 1m is the s...

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Abstract

The invention relates to a simulation method for salinized seasonal freeze-thawed soil evaporation. The simulation method comprises the following steps: collecting meteorological data information andsoil data information of a driving model; constructing a freeze-thawed soil evaporation model considering salt influence; according to the energy balance equation, establishing an upper boundary of afreeze-thawed soil hydrothermal salt migration model equation, and coupling the freeze-thawed soil hydrothermal salt migration model with the established soil evaporation model; meteorological data, soil information and the like are input, simultaneous solving is conducted on the coupling model, and the freeze-thawed soil evaporation process under the influence of salt is obtained. According to the method, the effect of salt in the freeze-thawed soil is fully considered, evaporation of the freeze-thawed soil can be effectively calculated, time and labor are saved, and the water resource management and utilization level can be promoted.

Description

technical field [0001] The invention relates to the technical field of soil evaporation simulation, in particular to a simulation method for seasonal freeze-thaw soil evaporation affected by salinization. Background technique [0002] Seasonal freeze-thaw soil is widely distributed in the world, accounting for 56% of the total land area of ​​the world, and is an important land use resource. As the third largest permafrost country in the world, the development and utilization of seasonal freeze-thaw soil is very necessary. For example, my country's Xinjiang, Inner Mongolia, and Northeast my country's seasonal eastern regions are important grain-producing areas in our country. However, in seasonally frozen soil regions, affected by the alternation of soil freezing and thawing, groundwater carries a large amount of salt and migrates to the soil surface. change. Salinized soil will not only lead to deterioration of soil physical and chemical properties, but also cause physiol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F17/11G06F111/10G06F119/08
CPCG06F30/20G06F17/11G06F2111/10G06F2119/08Y02A90/10
Inventor 伍靖伟毛俊刘雅文郭宸耀
Owner WUHAN UNIV
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