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Soil Pollution and its consequences

by Honey Mandal | 29-07-2020 16:40



Nepal is a landlocked country consisting of about 83% of  Mountainous area and 17 % alluvial plains of Gangetic basin.Soil is the main pillar for the food production .According to FAO (Food and Agriculture Organization) 95% of our food comes from soil directly or indirectly .But the population of human is increasing day by day due to which it evoke the soil pollution at rapid rate .In United States ,the losing rate of soil is 10 times faster than the natural replenishment rate .Therefore,it affects quality of water ,biodiversity,carbon sequestration and yield in agricultural crops.It takes 200 to 400 years to form 1 cm soil and in case of fertile soil it takes 3000 years to form.It is estimated that 150 tones of wastes are produced from Kathmandu valley in a daily basis.These wastes are thrown on the land and hence it affect the properties of soil qualitatively and quantitatively.If the soil get paved with heavy metal such as chromium and lead,it will induce an incidence such as cancer and leukemia in human.Furthermore,the excessive pollution in soil system affects the pyramid level of food chain and disrupts its function.Enormous use of Nitrogenous fertilizer in soil leads to acidification and improper practice of irrigation causes soil salinity problem.The placement of lithium in soil from the disposal of batteries can cause leaching of essential nutrients.

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