What are the consequences of deforestation?

Question

What are the consequences of deforestation?

A. Less wood for building purposes

B. Changing rainfall patterns

C. Soil erosion and flooding

D. Decreased shelter for homeless people

Answer 1

Fewer trees.

Answer 2

Atmospheric pollution

Deforestation is often cited as one of the major causes of the enhanced greenhouse effect. According to the Intergovernmental Panel on Climate Change deforestation, mainly in tropical areas, account for up to one-third of total anthropogenic carbon dioxide emissions.Trees and other plants remove carbon (in the form of carbon dioxide) from the atmosphere during the process of photosynthesis. Both the decay and burning of wood releases much of this stored carbon back to the atmosphere. Deforestation also causes carbon stores held in soil to be released. Forests are stores of carbon and can be either sinks or sources depending upon environmental circumstances. Mature forests can be net sinks of carbon dioxide (see Carbon dioxide sink and Carbon cycle).

The water cycle is also affected by deforestation. Trees extract groundwater through their roots and release it into the atmosphere. When part of a forest is removed, the region cannot hold as much water and can result in a much drier climate.

Biodiversity

Some forests are rich in biological diversity. Deforestation can cause the destruction of the habitats that support this biological diversity, thus contributing to the ongoing Holocene extinction event. Numerous countries have developed Biodiversity Action Plans to limit clear cutting and slash and burn agricultural practices as deleterious to wildlife and vegetation, particularly when endangered species are present.

Water cycle and water resources

Trees, and plants in general, affect the water cycle significantly:

their canopies intercept a proportion of precipitation, which is then evaporated back to the atmosphere (canopy interception);

their litter, stems and trunks slow down surface runoff;

their roots create macropores - large conduits - in the soil that increase infiltration of water;

they contribute to terrestrial evaporation and reduce soil moisture via transpiration;

their litter and other organic residue change soil properties that affect the capacity of soil to store water.

As a result, the presence or absence of trees can change the quantity of water on the surface, in the soil or groundwater, or in the atmosphere. This in turn changes erosion rates and the availability of water for either ecosystem functions or human services.

The forest may have little impact on flooding in the case of large rainfall events, which overwhelm the storage capacity of forest soil if the soils are at or close to saturation.

Soil erosion

Undisturbed forest has very low rates of soil loss, approximately 0.02 metric tons or 40 lbs per hectare.[citation needed] Deforestation generally increases rates of soil erosion, by increasing the amount of runoff and reducing the protection of the soil from tree litter. This can be an advantage in excessively leached tropical rain forest soils. Forestry operations themselves also increase erosion through the development of roads and the use of mechanized equipment.

China's Loess Plateau was cleared of forest millennia ago. Since then it has been eroding, creating dramatic incised valleys, and providing the sediment that gives the Yellow River its yellow color and that causes the flooding of the river in the lower reaches (hence the river's nickname 'China's sorrow').

Removal of trees does not always increase erosion rates. In certain regions of southwest US, shrubs and trees have been encroaching on grassland. The trees themselves enhance the loss of grass between tree canopies. The bare intercanopy areas become highly erodible. The US Forest Service, in Bandelier National Monument for example, is studying how to restore the former ecosystem, and reduce erosion, by removing the trees.

Landslides

Tree roots bind soil together, and if the soil is sufficiently shallow they act to keep the soil in place by also binding with underlying bedrock. Tree removal on steep slopes with shallow soil thus increases the risk of landslides, which can threaten people living nearby. However most deforestation only affects the trunks of trees, allowing for the roots to stay rooted, negating the landslide.

Answer 3

C is the best answer.  If forests are cleared for farm land it generally does not work out well.

Answer 4

B. Changing rainfall patterns

C. Soil erosion and flooding

Plus also how it would just effect the natural environment with the animals and birds

Answer 5

Loss of wild crops (http://www.copperwiki.org/index.php/Wild... indigenous species of plants and animals, loss of habitat for the fauna and we lose in the end

Answer 6

Screws up the counties weather

.. . ..

Makes the place look like an atomic bomb went off

.. . ..

Makes it look like a place you do not want to live

.. . ..

Gets ride of all the trees that use to keep it cool in the summer

.. . ...

Makes the wood you use cost more cause now you have no trees to cut down to use

. .. ..

Answer 7

B&C mostly.  But if you count Amazonian Tribal people, then D too.

Answer 8

Actually in the recent Wired mag an article shows that cutting down trees after about 55 years and regrowing new ones is the way to go for the enviroment.