Soil heavy metal spatial interpolation method and device and computer readable storage medium

Abstract

In order to overcome the defects of an existing spatial interpolation method, the invention provides a spatial interpolation method and device for soil heavy metals and a computer readable storage medium, and the spatial interpolation method comprises the following steps: by utilizing the principal component analysis and multiple linear stepwise regression functions of SPSS 22.0 and combining the spatial analysis function of Arcgis 10.2, calculating the spatial interpolation of soil heavy metals; analyzing the correlation between the soil heavy metal element content and the environment variable; main influence factors are extracted by analyzing the significant difference of the soil heavy metal content on different types of variables; and then main component analysis is utilized to extract main control environment factors, and a main component analysis improved regression Kriging model fusing natural and human factors is constructed. According to the method, a spatial simulation diagram of various soil heavy metals according with actual spatial distribution can be obtained, and an effective theoretical basis can be provided for risk management and control of the soil heavy metals.

Description

technical field [0001] The invention relates to the field of space simulation technology, in particular to a soil heavy metal space interpolation method. Background technique [0002] Soil provides the material basis necessary for human beings to survive, and the soil environment is very important to human beings. With the continuous development of industry, agriculture and urbanization, the soil environment and quality are threatened. Among the various elements that cause soil pollution, heavy metal pollution is becoming more and more serious. It deserves special attention and has become one of the current research hotspots. The conditions for the production of heavy metal elements are extensive and complex. On the one hand, the content of heavy metals in soil depends on the parent material, soil evolution process, soil-forming process and other natural factors in different regions. On the other hand, heavy metals can be emitted from vehicles, traffic activities, industrial...

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Problems solved by technology

[0004] However, there are still some problems in the current research, such as not fully considering the complex sources and migration and transformation processes of soil heavy metals, especially considering the impact of human factors on land use, and lacking attention to point and linear pollution sources; in addition, Correlations between environmental elements can lead to multicollinearity problems, reducing the accuracy of the regression function

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