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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.
Deforestation in China's Loess Plateau many years ago has led to soil erosion; this erosion has led to valleys opening up. The increase of soil in the runoff causes the Yellow River to flood and makes it yellow-colored. [207] Greater erosion is not always a consequence of deforestation, as observed in the southwestern regions of the US.
Land clearing destroys plants and local ecosystems and removes the food and habitat on which other native species rely. Clearing allows weeds and invasive animals to spread, affects greenhouse gas emissions and can lead to soil degradation, such as erosion and salinity, which in turn can affect water quality.
Salvage logging is the practice of logging trees in forest areas that have been damaged by wildfire, flood, severe wind, disease, insect infestation, or other natural disturbance in order to recover economic value that would otherwise be lost.
In such circumstances, the industry can cut the trees in a way to allow easier reforestation. [ citation needed ] Reforestation, if several indigenous species are used, can provide other benefits in addition to financial returns, including restoration of the soil , rejuvenation of local flora and fauna, and the capturing and sequestering of 38 ...
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Between 1981 and 1987 forestry licensees were allowed to harvest what would normally be allowable over a period of 25-30 years. 48,000 hectares were clearcut within the total 175,000 hectare outbreak area. [5]
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