A Method for Quantifying Irrigation Water Pollution Factors Using Plant Carrying Capacity Thresholds
A technology for carrying capacity and water pollution, which is applied in the field of plant carrying capacity threshold to quantify irrigation water pollution factors and objectively evaluate irrigation water quality, and can solve problems such as inability to scientifically reflect the degree of water pollution and methods for quantifying irrigation water quality without plants
Inactive Publication Date: 2016-01-27
INNER MONGOLIA UNIV OF SCI & TECH
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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
Method used
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[0017] Plants were irrigated with manganese-containing contaminated water, and the critical concentration of manganese ions was obtained by measuring the germination rate and plant height, which provided basic data for determining the threshold value of manganese ions carried by wheat.
[0018] Wheat acts as a plant receptor, and the pollution factor is manganese ions. Prepare a series of aqueous solutions of manganese ions with different concentrations (0, 0.01, 0.03, 0.05, 0.07, 0.09mg / L).
[0019] (1) The critical concentration of manganese ions was determined by the germination rate of wheat.
[0020] ① Wheat cultivation. Put the wheat seeds into an aqueous petri dish with two layers of filter paper, and the amount of water in the petri dish should not exceed the wheat seeds. Set 6 treatment groups according to the above-mentioned different manganese ion concentrations, and each treatment group has 3 replicate samples. Wheat seeds are put into the above-mentioned aqueous...
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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...
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IPC IPC(8): G01N33/18
Inventor 王晶妍王建英张雪峰司万童郑春丽杜志强邓攀博
Owner INNER MONGOLIA UNIV OF SCI & TECH