A Method for Quantifying Irrigation Water Pollution Factors Using Plant Carrying Capacity Thresholds

Abstract

The invention provides a method for quantifying irrigation water pollution factor by use of plant carrying capacity threshold values. The method is mainly based on the plant carrying capacity critical concentrations determined in a plant germination process and a plant growth process; the minimum values of the critical concentrations of the plant germination process and the plant growth process are set as the plant carrying capacity threshold values; the threshold values are used as standards for quantifying the irrigation water pollution factor and are used for evaluating the irrigation water pollution level, that is, the pollution factors in the irrigation water cannot exceed the threshold values; the critical concentration is a concentration inflection point of the pollution factor from the process of promoting plant growth to the process of inhibiting plant growth. The method can be operated simply and conveniently, has high efficiency, has objectivity and scientificity, and can be used as an important basis for formulating the national irrigation water standard.

Description

technical field [0001] The invention relates to a method for quantifying irrigation water pollution factors by using plant bearing capacity thresholds, which is also a method for objectively evaluating irrigation water quality, and belongs to the technical field of environmental evaluation. Background technique [0002] In recent years, with the rapid development of industry, environmental pollution has become increasingly serious around the world. Water pollution is one of the important environmental pollution. Regarding the environmental pollution status of each region, the relevant departments will first conduct an environmental and ecological risk assessment for the region, and then carry out pollution control according to the specific situation. Environmental ecological risk assessment is a quantitative evaluation of whether the environment is suitable for human habitation and the survival of animals and plants; its importance lies in making people aware of the harm of...

AI Technical Summary

Problems solved by technology

So far, most of the indicators for evaluating water pollution are derived from physical and chemical analysis, and these indicators cannot directly reflect the impact of pollution factors on plant growth.

Even if the growth state of plants is used as an indicator of water pollution, it is only a visual observation of the growth state of plants, which is subjective and arbitrary, and cannot scientifically reflect the degree of water pollution.

So far, there is no method for quantifying irrigation water quality using plants

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