Air pollution monitoring plants

air pollution, the toxic effect of its pollutants will be reflected on the plant body, showing certain visible symptoms. However, the response of various plants to the same atmospheric pollutants is not the same, some resistance is strong, slow response; Plants that are sensitive to atmospheric pollution reactions are called environmental pollution indicator plants or monitoring plants.In addition to the indicative plants in the seed plants mentioned above, licloths in spore plants are also a good type of air pollution-indicating plants. The her coat can monitor not only sulfur dioxide in the atmosphere, but also toxic gases such as hydrogen fluoride and chlorine, and a very small amount of toxic substances in the air can affect its growth and even death.When monitoring air pollution with monitoring plants, certain types of potted plants should be selected according to the specific types of pollutants emitted by the source of pollution, placed in areas requiring monitoring, and then observed and recorded symptoms and extent of their victimization. For example, fluoride can be placed near the phosphate fertilizer plant to monitor the fluorine pollution in the atmosphere around the phosphate fertilizer plant. If a few days later, Tang Pu appeared a typical fluoride hazard symptoms (the leaves at the front and edge of the light brown-yellow flaky spots), indicating that the plant has been contaminated with fluoride, and according to Tang Pu's various placement sites, it can be dedated fluoride contamination range.