Underground water level regulation and control method for synergistically relieving desertification and secondary salinization of arid area

Abstract

The invention relates to an underground water level regulation and control method for synergistically relieving soil desertification and secondary salinization of an arid area. The method comprises the steps: collecting data on the basis of analyzing the internal relation between desertification and secondary salinization of the arid area; calculating the critical burial depth of the soil-salinized underground water; calculating the critical burial depth of the soil-desertified underground water; determining the root system length of the vegetation community in the research area; determining adesert area underground water level recovery mode and parameters; determining a salinization area underground water level reduction mode and parameters; and achieving underground water level regulation and control for synergistically relieving desertification and secondary salinization. The method has universality for solving desertification and soil secondary salinization caused by unreasonablemanagement and control of the underground water level, and reliable theoretical and technical supports are provided for guiding reasonable development and utilization of underground water resources inthe arid area and ecological restoration.

Description

technical field [0001] The invention relates to a technical method for controlling groundwater levels for synergistic mitigation of soil desertification and secondary salinization in arid areas, is a calculation method for hydrology and water conservancy, and is an ecological and environmental protection technical method. Background technique [0002] Desert expansion and secondary salinization are the biggest threats to the ecological security of oases in the inland arid regions of Northwest China. The two are closely related to a certain extent. It is very important to carry out joint regulation research on the two from the perspective of hydrological mechanism to promote local ecological protection. It is also a technical difficulty that urgently needs to be broken through in the follow-up ecological restoration of arid areas. The main reason for desertification in the transitional zone around the oasis in the arid area is the use of a large amount of water resources in t...

AI Technical Summary

Problems solved by technology

At present, separate studies on the two issues are very common. Lowering the groundwater level in salinized areas, draining excess water at will, artificially planting shelterbelts, and increasing water consumption, both of which lack clear goals, are also a double waste of water resources.

In view of the above two problems, independent research can no longer meet the actual needs, and it is difficult to achieve better governance effects in practice

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