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Soil pollution trend analysis method

A soil pollution and trend analysis technology, applied in the field of soil pollution analysis, can solve the problems of lack of soil pollution change rate calculation and spatiotemporal analysis, achieve significant application value and social benefits, and eliminate the effect of data set differences

Active Publication Date: 2022-02-18
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method lacks the calculation of the rate of change of soil pollution in different historical periods and the analysis of time and space

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A soil pollution trend analysis method, comprising the following steps:

[0054] S1. Comparable point screening:

[0055] Collect 2 sets of soil pollution survey data in different historical periods, set up reference points in the soil to be tested this time, select the nearest historical survey points within 1 km around the reference point, and collect the soil at the reference point , if the reference point is consistent with the soil classification of the selected historical survey points, it will be judged as a group of comparable points, and the classification is soil classification, including brick red soil, red red soil, yellow brown soil, gray black soil, etc.; For cadmium, mercury, arsenic, lead, chromium, copper, nickel, and zinc in the soil of agricultural land, sampling points were arranged in the soil of agricultural land by the grid layout method, and the grid spacing was adjusted so that the number of sampling points in the area reached 100. Take 10cm su...

Embodiment 2

[0077] This embodiment is basically the same as Embodiment 1, except that the heavy metal pollution elements in step S1 are different.

[0078] The heavy metal pollution indicator is lead in the soil of agricultural land.

Embodiment 3

[0080] This embodiment is basically the same as Embodiment 1, except that the heavy metal pollution elements in step S1 are different.

[0081] Heavy metal pollution indicators are lead and chromium in agricultural land soil.

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Abstract

The invention discloses a soil pollution trend analysis method. The method comprises the following steps: S1, screening comparable point locations; S2, establishing comparable data: measuring the content of heavy metal in the soil sample at the reference point location collected in the step S1, and constructing a comparable data set of two-stage investigation based on the content of the heavy metal in the soil at the reference point location and the content of the heavy metal in the comparable point location in historical investigation; S3, calculating the soil pollution change rate: calculating the soil heavy metal content change rate of the reference point and the comparable point; S4, judging the soil pollution trend: judging the soil pollution change trend according to the soil heavy metal content change rate. According to the soil pollution trend analysis method, the comparable data set capable of being used for soil pollution condition trend analysis is constructed by establishing the comparable point locations among different investigation items, the data set difference caused by soil point location arrangement among different items is eliminated, and a theoretical basis and a scientific basis are provided for soil pollution condition space-time analysis and the like.

Description

technical field [0001] The invention relates to the technical field of soil pollution analysis, in particular to a soil pollution trend analysis method. Background technique [0002] Soil is a complex multiphase system composed of three phases: solid, liquid and gas. The solid phase of soil includes minerals, organic matter and soil organisms. There are pores of different shapes and sizes between the solid phase substances, and there are moisture and water in the pores. The relative content of air and three-phase substances varies with soil types and environmental conditions. The three-phase substances are interconnected and restricted, and are connected with the atmosphere above and groundwater below, forming a complete multi-media and multi-interface system. [0003] Soil environment investigation is the qualitative and quantitative determination of the composition, physical and chemical properties of soil. important means of quality assessment. Soil pollution is affecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G06F17/15
CPCG01N33/24G06F17/15
Inventor 李勖之孙丽王国庆张亚杜俊洋
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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