Topsoil Notes: Definitions & Explanations PDF | Download eBooks
Study Topsoil lecture notes PDF with biology definitions and explanation to study What is Topsoil?. Study topsoil explanation with biology terms to review biology course for online degree programs.
Topsoil Definition:
Remains of dead organisms and other organic matter form topsoil.
Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson
Topsoil Notes:
Topsoil is the upper, outermost layer of soil, usually the top 5to 10 inches. It has the highest concentration of organic matter and microorganisms and is where most of the earth's biological soil activity occurs. Topsoil is composed of mineral particles, organic matter, water, and air. Organic matter varies in quantity on different soils. The strength of soil structure decreases with the presence of organic matter, creating weak bearing capacities. Organic matter condenses and settles in different ways under certain conditions, such as roadbeds and foundations. The structure becomes affected once the soil is dewatered. The soil's volume substantially decreases. It decomposes and suffers wind erosion.
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