Method and system for obtaining relation between groundwater and natural vegetation system

A groundwater and relationship technology, which is applied to the relationship between groundwater and natural vegetation systems in semi-arid areas to obtain arid fields, can solve problems such as inability to obtain groundwater and natural vegetation systems in arid and semi-arid areas.

Inactive Publication Date: 2012-12-12
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a system that can effectively obtain groundwater and natural vegetation systems in arid and semi-arid areas i...

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  • Method and system for obtaining relation between groundwater and natural vegetation system
  • Method and system for obtaining relation between groundwater and natural vegetation system
  • Method and system for obtaining relation between groundwater and natural vegetation system

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Embodiment Construction

[0033] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0034] The method for obtaining the relationship between groundwater and natural vegetation system in arid and semi-arid areas in the embodiments of the present invention, such as figure 1 As shown, including the following steps:

[0035] S101. Determine the lithological structure boundary of the unsaturated zone in the study area according to the pre-collected data, and the study area is an arid or semi-arid area;

[0036] In an embodiment of the present invention, determining the lithological structure boundary of the unsaturated zone in the study area according to the pre-collected data is speci...

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Abstract

The invention discloses a method and a system for obtaining a relation between groundwater and a natural vegetation system. The method comprises the following steps of: determining a vadose zone strata structure boundary of a researched area, wherein the researched area is a drought or semiarid area; acquiring remote sensing data of the researched area; acquiring vegetation coverage data and groundwater depth and hydrochemical characteristic data of the researched area, which are measured in the field; inverting the remote sensing data of the researched area by utilizing a dimidiate pixel model and acquiring a vegetation coverage image in a satellite pixel scale; generating a groundwater depth and hydrochemical characteristic image in a satellite pixel scale; generating a two-dimensional scatter diagram of a relation between the vegetation coverage and the groundwater depth and the hydrochemical concentration in a satellite pixel scale; and acquiring the relation that the natural vegetation growth is changed with the groundwater depth and the hydrochemical concentration. In the relation between the groundwater and the natural vegetation system, hwich is researched by the invention, spatial scales of research objects are matched; and the relation between the ground water and the natural vegetation system can be effectively and deeply disclosed.

Description

Technical field [0001] The invention relates to the field of earth science and technology, in particular to a method and system for obtaining the relationship between groundwater and natural vegetation systems in arid and semi-arid areas. Background technique [0002] In recent years, in the context of increasing global extreme climates, the ecological and environmental problems of arid and semi-arid regions relying on groundwater have become more and more serious. The prominent manifestations are vegetation degradation, wetland shrinking, and the expansion and increase of desertification. The core problem is groundwater. The control effect of phreatic depth and water chemical characteristics on the growth of natural vegetation, that is, changes in groundwater level and water quality affect the growth and development of natural vegetation. [0003] For a long time, the research on the relationship between the groundwater-vegetation system in arid and semi-arid areas is to directly ...

Claims

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Application Information

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IPC IPC(8): G01V8/02
Inventor 陈伟涛孙自永王焰新
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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