Search results
Results from the WOW.Com Content Network
Trees are cut down for use as building material, timber or sold as fuel (sometimes in the form of charcoal or timber), while cleared land is used as pasture for livestock and agricultural crops. The vast majority of agricultural activity resulting in deforestation is subsidized by government tax revenue . [ 89 ]
Trees in tropical climates have, on average, larger, brighter, and more abundant leaves than non-tropical climates. A study of the girth of 70,000 trees across Africa has shown that tropical forests fix more carbon dioxide pollution than previously realized.
Clear-cutting: This is the practice of cutting down all of the trees in an area. Clear-cutting is often used to create large areas of land for agriculture or development. Selective cutting: This is the practice of cutting down only certain trees, such as those that are mature or diseased. Selective cutting is often used to manage forests and ...
The trees that are no longer there can’t continue to convert carbon dioxide into oxygen, and the forests that grow back won’t capture enough carbon to break even for decades or centuries, if ...
Afforestation can also negatively affect biodiversity by increasing fragmentation and edge effects on the habitat outside the planted area. [ 12 ] [ 13 ] [ 14 ] Australia, Canada, China, India, Israel, United States and Europe have afforestation programs to increase carbon dioxide removal in forests and in some cases to reduce desertification .
Carbon emissions from deforestation is an important issue to look at with the increasing problem of global warming.Currently, about 4% of B.C.′s total green house gas (GHG) yearly emissions are from deforestation, which is quite a low percentage compared to B.C.'s total GHG emissions, and works out to be about 6,200 hectares of forest land is converted to non-forest use per year. [4]
The Environment Ministry blamed the increase on weak law enforcement and a lack of supervision from local authorities, with land clearance as the primary cause of the fires. [ 17 ] Between 1990 and 2000 20% of the forest area in Indonesia had been lost (24 million ha) and by 2010, only 52% of the total land area was forested (94 million ha). [ 18 ]
Other observed effects also include the lengthening in growing seasons of certain agricultural crops such as wheat and maize. [33] A recently published study has used data recorded by the writer and naturalist Henry David Thoreau to confirm effects of climate change on the phenology of some species in the area of Concord, Massachusetts. [34]