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Quantitative evaluation method of soil environmental carrying capacity for pesticide application

A bearing capacity and soil technology, which is applied in the field of soil environmental pollution prevention and control, can solve problems that have not been reported in the research, and achieve the effect of improving the soil environmental bearing capacity

Inactive Publication Date: 2018-01-12
DALIAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

At present, there is no report on the evaluation model of soil environmental carrying capacity for pesticide application

Method used

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  • Quantitative evaluation method of soil environmental carrying capacity for pesticide application
  • Quantitative evaluation method of soil environmental carrying capacity for pesticide application
  • Quantitative evaluation method of soil environmental carrying capacity for pesticide application

Examples

Experimental program
Comparison scheme
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example 1

[0024] Example 1: When only the impact of pesticide use on soil environmental carrying capacity is considered, the selected evaluation indicators do not include 7 self-assessment evaluation indicators, and 49 evaluation indicators are selected from 108 evaluation indicators, and the standardized evaluation indicators Principal component analysis was performed on the data of the indicators, and the scores and contribution rates of the eight principal components were obtained, so as to obtain the qualitative model 1:

[0025] Y=23.012%×y 1 +17.076%×y 2 +16.902%×y 3 +6.733%×y 4 +6.712%×y 5 +6.456%×y 6 +3.152%×y 7 +2.460%×y 8 . Through the model calculation, the total score value of each region in Liaoning was obtained, and the Kriging interpolation method of ArcGIS was used to make a distribution map of the total score, as shown in the attached figure 1 , attached figure 2 And attached image 3 The distribution maps of the total score of soil environmental carrying cap...

example 2

[0026] Example 2: Using a step-by-step method, the total score of each region and the original data of 49 evaluation indicators are fitted with multiple linear regression, and R is selected 2 = 0.982 model, the quantitative equation model 2 is obtained:

[0027] Y=-3.48×10 -7 x 5 -1.85×10 -6 x 9 -2.72×10 -5 x 15 -6.88×10 -6 x 20 -6.10×10 -7 x 26 -7.30×10 -7 x 31 -1.16×10 -6 x 32 -5.68×10 -3 x 33 +1.46×10 -6 x 41 +5.75×10 -6 x 43 -3.60×10 -6 x 44 +1.86×10 -5 x 45 +2.67×10 -5 x 48+ 1.30×10 -4 x 49 +4.47×10 -6 x 54 +2.25×10 -6 x 55 -0.023. By changing the value of each index data, the total score of soil environmental carrying capacity can be improved, thereby improving the environmental carrying capacity of the region. As pointed out in Example 1, the total score of the soil environmental carrying capacity of Changtu County, Tieling City in 2014 was -2.945. According to the analysis in Example 1, the evaluation indicators included in the main compon...

example 3

[0028] Example 3: Considering the impact of pesticide use, pesticide residues and risks on soil environmental carrying capacity, the selected evaluation indicators include 7 self-assessment evaluation indicators and 49 evaluation indicators selected from the evaluation indicators, and the standardized evaluation indicators Principal component analysis was performed on the data, and 10 principal component scores and contribution rates were obtained to obtain qualitative model 3:

[0029] Y=24.018%×y 1 +14.406%×y 2 +12.665%×y 3 +7.205%×y 4 +6.385%×y 5 +5.523%×y 6 +5.347%×y 7 +4.104%×y 8 +3.581%×y 9 +2.706%×y 10 . Through the model calculation, the total score value of each region is obtained, and the graph is drawn. Figure 4 The distribution map of the total score of soil environmental carrying capacity considering pesticide residue indicators in Liaoning Province in 2015, followed by image 3 In comparison, the regional differences in the environmental carrying capa...

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Abstract

The invention discloses a quantitative evaluation method of soil environmental carrying capacity for pesticide application. The quantitative evaluation method comprises the steps of: taking the soil environmental carrying capacity as a core, selecting 10 first-grade indexes of natural conditions, population, national economy, finance, agricultural production, soil physiochemical properties, educational technology, people's livelihood, traffic and transportation and environmental protection of counties and districts according to a statistical yearbook of a province to be researched, and forminga total evaluation index library; selecting relevant evaluation indexes from the total evaluation index library based on correlation of pesticide application amount, pesticide residual amount and evaluation index factors; adding seven self-test evaluation indexes including soil pesticide residual concentration, pesticide detected types, ecological risk, carcinogenic risk, non-carcinogenic risk, soil pH and soil organic matter on the basis of the relevant evaluation indexes to form a relevant evaluation index library; and performing principal component analysis on standardized data to obtain score values and contribution rates of a plurality of principal components, and identifying limiting factors of soil environmental carrying capacity in different regions.

Description

technical field [0001] The invention belongs to the field of soil environmental pollution prevention and control, and relates to a soil environmental bearing capacity evaluation method and model for quantitatively evaluating county-level pesticide application. This model can evaluate the regional differences in soil environmental carrying capacity of pesticide application, identify the limiting factors of soil environmental carrying capacity in different regions, and propose corresponding solutions and solutions to improve the soil environmental carrying capacity of pesticide application in different regions. Background technique [0002] As the most basic land resource, land is the basic carrier of resources, environment, population, production and construction, and economy in a certain area, and is an indispensable material basis for human survival and development. With the increase of population, the development of social economy, people's gradual enhancement of natural i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/02G06K9/62
Inventor 蔡喜运蔡霖崔世璇陈景文郑永权
Owner DALIAN UNIV OF TECH
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