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- A buried soil profile, or paleosol (above geologist ‘s head), represents soil development during the last interglacial period. A modern soil profile (Alfisol) occurs near the land surface.
openoregon.pressbooks.pub/envirobiology/chapter/9-1-soil-profiles-and-processes/
A buried soil is defined by the National Resources Conservation Service as a soil that is “covered with a surface mantle of new soil material that either is 50 cm or more thick or is 30–50 cm thick and has a thickness that equals at least half the total thickness of the named diagnostic horizons that are preserved in the buried soil ...
- Paleosol
The most easily recognized type of paleosol in Ruhe's (1965)...
- Topsoil
Strategies for improving phosphorus acquisition efficiency...
- Soil Horizon
The examination of a soil profile along only one vertical...
- Sediments
Sediments of Aquatic Ecosystems. J. Bloesch, in Encyclopedia...
- Arbuscular Mycorrhiza
Arbuscular mycorrhizas have been detected in more than 80%...
- Paleosol
Apr 13, 2022 · A buried soil profile, or paleosol (above geologist ‘s head), represents soil development during the last interglacial period. A modern soil profile (Alfisol) occurs near the land surface. Source: D. Grimley.
A buried soil profile, or paleosol (above geologist ‘s head), represents soil development during the last interglacial period. A modern soil profile (Alfisol) occurs near the land surface. Source: D. Grimley.
- Climate
- Organisms
- Relief
- Parent Material
- Time
The role of climate in soil development includes aspects of temperature and precipitation. Soils in very cold areas with permafrost conditions tend to be shallow and weakly developed due to the short growing season. Organic rich surface horizons are common in low-lying areas due to limited decomposition. In warm, tropical soils, soils tend to be th...
Animals, plants, and microorganisms all have important roles in soil development processes, in providing a supply of organic matter, and/or in nutrient cycling. Worms, nematodes, termites, ants, gophers, moles, etc. all cause considerable mixing of soil and help to blend soil, aerate and lighten the soil by creating pores (which help store water an...
The local landscape can have a surprisingly strong effect on the soils that form on site. The local topography (relief) can have important microclimatic effects as well as affecting rates of soil erosion. In comparison to flat regions, areas with steep slopes overall have more soil erosion, more runoff of rainwater, and less water infiltration, all...
The parent materialof a soil is the material from which the soil has developed, whether it be river sands, shoreline deposits, glacial deposits, or various types of bedrock. In youthful soils, the parent material has a clear connection to the soil type and has significant influence. Over time, as weathering processes deepen, mix, and alter the soil...
In general, soil profiles tend to become thicker (deeper), more developed, and more altered over time. However, the rate of change is greater for soils in youthful stages of development. The degree of soil alteration and deepening slows with time and at some point, after tens or hundreds of thousands of years, may approach an equilibrium condition ...
- Matthew R. Fisher
- 2017
A soil profile is a vertical section of soil arrangements under the surface of the earth. The soil is arranged in layers, which are called soil horizons.
- 6 min
Nov 8, 2024 · Soil is one of the principal substrata of life on Earth, serving as a reservoir of water and nutrients, as a medium for the filtration and breakdown of injurious wastes, and as a participant in the cycling of carbon and other elements through the global ecosystem.
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Definition. A soil profile is a vertical section of soil from the ground surface downwards to where the soil meets the underlying rock. It reveals different layers or horizons, each with distinct characteristics and compositions.
