Phisical Universe

Introduction

Deforestation is defined as the conversion of forested areas to non-forest land use such as arable land , pasture , urban use , logged area , or wasteland

Forest plays as the most important role in our community today . One of the many reasons is that it gives shelter to the wild distinct animals including the domestics . It also provides them foods for their daily needs . Secondly , the camping trip for a small family which is the trademark in our culture . Thirdly , forest perform an important ecological functions united in plant matter . It deals

with oxygen production to help prevent excessive global warming . Additionally , it helps replace the nutrients in plants and prevent Desertification Lastly and the most obvious , people need to have forest since we rely on them as a source of lumber . But Deforestation comes up with a very huge and important environmental problem . No one can deny the basic human need for housing . Human beings have always cut down trees . Wood has historically been the most dominant form of heating fuel , as well as one of the most often used building materials for houses and ships And no one can deny that any advanced culture requires a great deal of to transact its daily business

Since about the mid-1800s the Earth has experienced an unprecedented rate of change of destruction of forests worldwide . Forests in Europe are adversely affected by acid rain and very large areas of Siberia have been harvested since the collapse of the Soviet Union . In the last two decades , Afghanistan has lost over 70 of its forests throughout the country . However it is in the world 's great tropical rainforests where the destruction is most pronounced at the current time and where wholesale felling is having an adverse effect on biodiversity and contributing to the ongoing Holocene mass extinction

About half of the mature tropical forests , between 750 to 800 million hectares of the original 1 .5 to 1 .6 billion hectares that once covered the planet have been felled . The forest loss is already acute in Southeast Asia , the second of the world 's great biodiversity hot spots Much of what remains is in the Amazon basin , where the Amazon Rainforest covered more than 600 million hectares . The forests are being destroyed at an accelerating pace tracking the rapid pace of human population growth . Unless significant measures are taken on a world-wide basis to preserve them , by 2030 there will only be ten percent remaining with another ten percent in a degraded condition . 80 percent will have been lost and with them the irreversible loss of hundreds of thousands of species

Many tropical countries , including Indonesia , Thailand , Malaysia Bangladesh , China , Sri Lanka , Laos , Nigeria , Liberia , Guinea , Ghana and the Cote d 'lvoire have lost large areas of their rainforest . 90 of the forests of the Philippine archipelago have been cut . In 1960 Central America still had 4 /5 of its original forest now it is left with only 2 /5 of it . Madagascar has...