Method for measuring and calculating threshold concentration of ecological toxic effect of environmental pollutants

Abstract

The invention discloses a method for measuring and calculating the threshold concentration of an ecological toxic effect of environmental pollutants. According to the method, on the basis of the experimental result of the toxic effect of biological single species, the sensitivity, reliability and stability of reaction endpoints are analyzed, the ecological relationship between populations is utilized for constructing an ecological system model, the multiple reaction end points which are in the different trophic levels and population levels are combined, then, an ecological system-toxic effect coupling model is constructed, and the threshold concentration of the ecological toxic effect of the pollutants is calculated by using the phenomenon whether ecological system asymptotic positive balance points (x*, y* and z*) in the certain pollutant concentration deviate from original balance points or not (namely whether the significant difference exists or not) as the criterion of the threshold concentration. According to the method for measuring and calculating the threshold concentration of the ecological toxic effect of the environmental pollutants, the ecological correlation between the ecological system populations is considered, the toxic effect measurement and calculation are carried out on the population level, and the result is more real and reliable.

Description

technical field [0001] The invention relates to a method for measuring and calculating the threshold concentration of the ecotoxicity effect of environmental pollutants, in particular to a method for measuring and calculating the threshold concentration of the ecotoxicity effect of pollutants based on the population level of a single species and having strong ecological correlation. Background technique [0002] In the past 30 years, my country's economy has developed rapidly, and the discharge of pollutants has led to increasingly serious pollution of natural water bodies, degraded water ecosystems, and the ecological protection of water environments needs to be strengthened urgently. The scientific establishment of water quality standards is the basis for water ecosystem protection and environmental management, and the establishment of water quality standards is the scientific basis for the establishment of water quality standards. Since the end of the 1970s, the resea...

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Problems solved by technology

Therefore, the current research on the threshold concentration of pollutant ecotoxicity effects is mostly limited to single-species toxicity experiments, and lacks consideration of the ecological correlation between ecosystem populations, which reduces the authenticity and reliability of the research results.

[0004] At present, there are no relevant reports on the scientific calculation of the threshold concentration of toxic effects of water environmental pollutants that reflect ecological relationships using toxic effect data at the population level of a single species

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