Monitoring and evaluation method for seawater intrusion and soil salinization

Abstract

The invention discloses a monitoring and evaluation method for seawater intrusion and soil salinization. The monitoring and evaluation method comprises the following steps: acquiring soil electric conductivity ECe of a to-be-detected area; acquiring a groundwater level L and groundwater electric conductivity ECw of the to-be-detected area; fitting a relationship of the groundwater level L and the groundwater electric conductivity ECw by using a Marquardt method according to the groundwater level L and the groundwater electric conductivity ECw, and fitting to generate a soil electric conductivity fitted value (shown in the description); selecting N monitoring points from the to-be-detected area, and respectively acquiring the soil electric conductivity ECei and the soil electric conductivity fitted value (shown in the description) of each monitoring point as well as a soil electric conductivity fitted result average value (shown in the description) of the N monitoring points so as to calculate out an evaluation result of seawater intrusion and a soil salinization disaster chain effect. According to the monitoring evaluation method disclosed by the invention, the seawater intrusion degree and the soil salinization degree of the to-be-detected area can be accurately monitored, and the influence degree of the seawater intrusion on soil salinization disaster can be accurately judged, so that the seawater intrusion and a soil salinization grade can be comprehensively evaluated.

Description

technical field [0001] The invention belongs to the technical field of groundwater and soil detection, and in particular relates to a method for judging the influence of seawater intrusion on soil salinization by detecting the degree of seawater intrusion of groundwater and the degree of salinization of soil. Background technique [0002] Due to the impact of human activities such as groundwater exploitation and sea level rise, seawater intrusion has become a common geological disaster in coastal areas around the world. Large-scale seawater intrusion will lead to the occurrence of a series of disaster chains such as the deterioration of groundwater quality and secondary salinization of soil, which in turn seriously restricts the sustainable development of the economy and society. Therefore, the establishment of multi-parameter real-time monitoring technology and evaluation method for seawater intrusion and soil salinization plays an important role in the rational development...

AI Technical Summary

Problems solved by technology

These methods have their own advantages and disadvantages. For example, although the direct measurement of chemical parameters is simple and accurate, it is time-consuming and labor-intensive, and the test cycle is long; the electrical measurement method is widely used because of its non-destructive monitoring, continuity and easy access to data It is used in the field of soil salinization monitoring, but because the electrical properties of soil are easily affected by factors such as temperature and moisture content, when using electrical methods for soil monitoring, it is necessary to comprehensively consider the influence of various factors on electrical properties

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