Question

about forest soil profiles?

Answer 1

Answer:

Forest Soil. Forest soils are generally characterized by deeply rooted trees, significant “litter layers” or forest floors (O horizons), and recycling of organic matter and nutrients by wide varieties of soil-dwelling organisms.

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Answer 2

During primary successions, soils develop. Different layers form as the soil weathers and organic matter builds up. This soil on sand dunes at Waitārere, on the North Island’s west coast, is very young. A shallow layer of topsoil (2–3 centimetres deep), darkened by organic matter, has built up above a deep layer of sand in which tree roots and fern rhizomes grow.