The impacts of crop residue burning are immediate as well as long term. Besides the increase in air pollution and resulting respiratory problems, which one of the following according to you are the immediate noticeable impacts?
i. Depletion of soil nitrogen, phosphorus, potassium
ii. Ozone layer depletion iii.Loss of microorganisms of the upper layer of the soil
iv. Climate change
Solution
(a)i, ii, iv
Climate change may be caused by a rise in global temperature. Crop burning increases the concentration of greenhouse gases, according to the findings of this study (carbon dioxide, methane and nitrous oxide). Methane and nitrous oxide, on the other hand, provide about 9% and 1%, respectively.
Though the effect is only transient because the microorganisms regrow after a few days, repeated burning in the field may have a long-term effect on the microbial population. Residue burning reduces bacterial and fungal populations in the top 2.5 cm of the soil instantly and significantly. Crop burning is also a result of ozone layer loss. Crop burning is also caused by a lack of sodium, nitrogen, and potassium.
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