Method for determining causal relationship between water resource and ecological environment based on Granger test

A technology of causality and ecological environment, applied in resources, general water supply conservation, data processing applications, etc., can solve problems such as overfitting, failure, improper selection of polynomial fitting index, etc., to achieve clear direction and improve accuracy Effect

Active Publication Date: 2022-03-18
TIANJIN UNIV
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Problems solved by technology

[0003] Existing technologies mostly rely on traditional correlation and regression analysis to study the impact mechanism and mechanism of action between water resources and the ecological environment, which have corresponding limitations. For example, improper selection of polynomial fitting index can easily lead to overfitting collinearity; standard linear regression will fail if there is high collinearity between the feature variables

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  • Method for determining causal relationship between water resource and ecological environment based on Granger test
  • Method for determining causal relationship between water resource and ecological environment based on Granger test
  • Method for determining causal relationship between water resource and ecological environment based on Granger test

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other. It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. The disclosure of the present invention uses "comprises" or "comprises" and other similar words to mean that the elements or objects appearing before the words include the elements or objects listed after the words and their equivalents, without excluding other elements or objects.

[0032] Such as figure 1 Shown, the present invention provides a kind of method that determines water resources and ecological environment causality based on Granger test, comp...

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Abstract

The invention discloses a method for determining a causal relationship between a water resource and an ecological environment based on a Granger test. The method comprises the following steps: S1, obtaining a water footprint time sequence and an ecological footprint time sequence; s2, carrying out stationarity test on the two time sequences; s3, carrying out co-integration on the two time sequences, and judging whether the two time sequences have an equilibrium relationship or not; s4, establishing a coupling model of the water footprint and the ecological footprint, and calculating a coupling degree value of the two time sequences by using the coupling model; s5, performing Granger causal relationship verification on the water footprint time sequence and the ecological footprint time sequence; s6, constructing a regression model, and calculating an F statistic by using the regression model; and S7, determining the causal relationship between the water resource and the ecological environment according to the F statistic in combination with an F test critical table. According to the method, the causal relationship among the data is determined by utilizing Granger causal relationship verification, the directivity is clear, the constructed relationship accords with reality, and the accuracy is improved compared with the existing scheme.

Description

technical field [0001] The invention relates to the technical field of ecohydrology, in particular to a method for determining the causal relationship between water resources and ecological environment based on Granger test. Background technique [0002] Since human society began to develop and utilize water resources, the natural one-dimensional water cycle structure has been broken, and a "nature-society" dual water cycle structure has been formed. The formation of the social water cycle, on the one hand, expands the service function of water resources from the natural ecological and environmental category to the social and economic category, but at the same time, due to the dynamic interdependence between the social water cycle and the natural water cycle, and the following The discharge of social and economic pollutants carried by the water cycle makes water resources play social and economic service functions, while affecting natural ecological and environmental service...

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/0639G06Q50/26Y02A20/152
Inventor 谷新晨龙爱华张沛张云蕾庞宁张继刘静
Owner TIANJIN UNIV
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