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Clear cutting on a large scale in a watershed can cause sediment and nutrients that leach into the streams cause the acidity of the stream to increase. [15] The nutrient content of the soil was found to return to five percent of pre-clearcutting levels after 64 years. [16]
Daily soil temperatures at 5 cm depth were 2 °C to 3 °C greater in the clear-felled area than in the uncut forest, and temperatures at depths of 50 cm and 100 cm were 3 °C to 5 °C greater. The differences between the clear-felled and uncut areas did not diminish during the 12 years following cutting.
The biochar thus created, given back to the soil, is not only a durable carbon sequestration method, but it also is an extremely beneficial amendment to the soil. Mixed with biomass it brings the creation of terra preta , one of the richest soils on the planet and the only one known to regenerate itself.
Soil erosion is very significant pressure on land condition because it undermines existing vegetation and habitats and inhibits vegetation and other biotas that inhabit the vegetation from re-establishing, thus resulting in a "negative" feedback loop. Terrestrial vegetation is a source of nutrient replenishment for soils.
Soil is made up of a multitude of physical, chemical, and biological entities, with many interactions occurring among them. It is a heterogenous mixture of minerals and organic matter with variations in moisture, temperature and nutrients.
These lands have become targets for commercial logging, paper pulp production and conversion to plantations through clear-cutting, drainage and burning. [2] Drainage of tropical peatlands alters the hydrology and increases their susceptibility to fire and soil erosion, as a consequence of changes in physical and chemical compositions. [30]
Secondary succession is the secondary ecological succession of a plant's life. As opposed to the first, primary succession, secondary succession is a process started by an event (e.g. forest fire, harvesting, hurricane, etc.) that reduces an already established ecosystem (e.g. a forest or a wheat field) to a smaller population of species, and as such secondary succession occurs on preexisting ...
Soil, also commonly referred to as earth, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support the life of plants and soil organisms. Some scientific definitions distinguish dirt from soil by restricting the former term specifically to displaced soil. Soil measuring and surveying device