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Farmland heavy metal pollution risk assessment method

A risk assessment and heavy metal technology, applied in the field of farmland heavy metal pollution risk assessment, can solve problems such as insufficiently reflecting the risk level of agricultural products, and achieve the effect of improving accuracy and scientificity

Inactive Publication Date: 2018-06-01
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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Problems solved by technology

[0008] The invention provides a farmland heavy metal pollution risk assessment method to solve the technical problem that the farmland heavy metal pollution risk assessment method in the prior art is not enough to reflect the risk level of the output agricultural products

Method used

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Experimental program
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Embodiment 1

[0092] 1. Sample collection and processing

[0093] A total of 22 groups of soil-wheat grain point-to-point samples of 17 dominant varieties of wheat were collected in 4 locations in Hebei Province (as shown in Table 1-1). The 4 sampling points are located in Zhao County Original Seed Factory (Zhao County), Shijiazhuang City Zhao County Han Village (Zhao Han Village), Shijiazhuang City Gaoyi Original Seed Farm (Gaoyi), Baoding City Anxin County Tongkou Town Beiqing Village (Beiqing Village).

[0094] Soil samples were collected according to the five-point method of 0-20cm surface soil, and all were mixed samples. The collected soil samples were naturally air-dried in a dark room, and stones, roots and other debris were removed, ground and passed through 0.149mm (100 mesh), 0.25mm (60 mesh), 1mm (16 mesh) and 2mm (8 mesh) nylon Sieve and measure the basic physical and chemical properties of the soil (results are shown in Table 1-2). Plant samples (only the aboveground part i...

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Abstract

The invention relates to a farmland heavy metal pollution risk multi-index assessment method comprising the following steps: taking the soil heavy metal pollution degrees, the soil heavy metal pollution accumulation trend and crops heavy metal pollution degrees as assessment indexes. On the basis of an existing farmland heavy metal pollution risk assessment method, the farmland heavy metal pollution risk multi-index assessment method fully considers soil, plants and accumulation trend, and environment influences, thus improving the farmland heavy metal pollution risk assessment accuracy and scientific property in certain level, and providing true guiding effects on farmland heavy metal pollution early warning and restoration.

Description

technical field [0001] The invention relates to the technical field of risk prevention and control of heavy metal pollution in farmland, in particular to a risk assessment method for heavy metal pollution in farmland. Background technique [0002] Risk assessment is widely used in many aspects such as natural disasters, resource utilization, and climate change. In the field of environmental protection, risk assessment methods have been used in the risk management of toxic and harmful chemicals. Heavy metals are toxic chemical pollutants that enter my country's farmland environment in large quantities and have serious impacts. Heavy metals remaining in the soil not only cause serious pollution to the ecological environment, but also directly threaten human health through the food chain. Therefore, the impact and consequences of heavy metal pollutants in farmland soil on the ecological environment cannot be ignored, and it is necessary to provide scientific and technical suppo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/0635G06Q50/02
Inventor 马义兵李菊梅倪润祥熊孜
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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