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To browse Academia. Soil is the principal constituent of earth ecosystem that comprises of a complicated mixture of organic matter, liquids, minerals, gases, and a diversity of organisms that sustain life Huang et al.
The composition and proportion of these constituents affect the physical, chemical, and biological properties of soil which in turn affect its agricultural suitability. Soil interfaces with lithosphere, hydrosphere, atmosphere, and biosphere playing important role in nutrient and organic wastes recycling, inhabiting microflora that aid decomposition processes, provide medium for plant growth and water storage.
Soils continue to modify over time as a product of climate change, weathering, anthropogenic, and other biotic activities. It acts as sink for all chemicals generated from anthropogenic and natural activities Jonathanet al. Retention time of different substances in soil ecosystems is longer than in hydrosphere and atmosphere because contaminants accumulate quickly in soils and deplete at a slow rate.
Agricultural soils in this regard are greatly prone to anthropogenic substances which are used to enhance agricultural productivity. Increased rate of heavy metal addition in soils has also accelerated corresponding metal biogeochemical cycles. Along with metals, many other organic substances, i.