Introduction sur la deforestation pdf

Governments and large lumber companies see large profits in the mass deforestation. Tropical deforestation contributes as much as 90% of the current net release of biotic carbon dioxide into the atmosphere. Forests originally covered 40% of earths terrestrial surface, but extensive deforestation over the past 300 years has reduced this area substantially e. Despite knowing the fact how important trees and forests are for the mankind, human beings are still continuing to cut down trees and clearing the forest land for building and construction. Deforestation is consequently an important potential source of carbon. Deforestation and climate change congressional research service summary efforts to mitigate climate change have focused on reducing carbon dioxide co 2 emissions into the atmosphere. Deforestation also disrupts the water cycle, which is the circulation of water between the earth and the atmosphere. The subject of deforestation and the effects that it has on the environment have been heavily 3debated for a long time. Basic concepts of deforestation, degradation, and fragmentation 2. How to give a speech on deforestation with pictures. Deforestation by a peasant farmer is often done to raise crops for selfsubsistence, and is driven by the basic human need for food.

Your introduction should pull the listener into your speech. Chinese premiers visit to latin america raises concerns about the impacts of mining, oil, agriculture and infrastructure projects. Apr 29, 2012 deforestationthe effects of deforestation deforestation has many negative effects on the environment. Do not say deforestation is a problem and we have to overcome it. How to give a speech on deforestation with pictures wikihow. Deforestation et degradation des forets dans le bassin du congo. Deforestation deforestation regrowth undisturbed forest forest fragments figure 1. Introduction sur lestimation des surfaces cultivees 3 5. Tree roots pull water out of the ground and release it.

Parc mikea study on historical deforestation and scenarios. Deforestation has become a huge concern in todays life as there has been a rise in the decline of forests. Conclusion thus, deforestation is an important issue to be discussed. Jul 14, 2010 thus, deforestation is an important issue to be discussed. Deforestation is the permanent destruction of indigenous forests and woodlands. Qui est causee par le deboisement, puis le defrichement des sols. Deforestationintroduction to deforestationdeforestation is defined by as the cutting down and removal of all or most of the trees in aforested area. Produce various scenarios of future deforestation according to the introduction of alternative practices such as organic cotton production beneficiaries results results show deforestation rates that reached in 2015, 3. Introduction of deforestation destruction of our green planet. Some of these efforts center on reducing co 2 emissions from deforestation, since. Introduction sur les marches volontaires du carbone et les principaux standards.

The dark areas are forest, the white is deforested areas, and the gray is regrowth. Earth has lost more than half a million square miles of forest between 2000 and 2012. Methodes destimation des surfaces cultivees par teledetection 5 5. The most dramaticimpact is a loss of habitat for millions of species national geographic. If your introduction is weak, it will act as a successful sleepinducer. Tree roots pull water out of the ground and release it as water vapor into the air. Introduction of deforestation destruction of our green. Deforestation is bad for the environment because animals lose their homes, trees are lost, and species are becoming extinct. Indeed some 31 countries do not even make the list because they have already removed most of their forests and even if that remain are seriously fragmented and degraded. Deforestation results from removal of trees without sufficient reforestation thisprocess alters the hydrologic cycle, altering the amount of water in the soil.

According to norman myers, who published a book on the subject in 1979, the main causes of deforestation are excessive logging, slash and burn agriculture, cattle raising and harvesting for fuel. Trees are cut down in order to manufacture paper products as well as for livestock farming and so on. Causes, effects and control strategies 5 deforestation are maintained. People believe that farming is the leading cause of deforestation because in the amazon, farmers are cutting down trees to make room for their cattle, livestock, and crops. The term does not include the removal of industrial forests such as plantations. An introduction to the deforestation and the effects that. According to fao, deforestation is the conversion of. 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. The changes in area of forest by region and subregion are shown in table 1. Deforestation forests cover 31% of the land area on our planet they produce vital oxygen and provide homes for people and wildlife many of the worlds most threatened and endangered animals live in these forests 1. Speech on deforestation deforestation is a worse reality of the present times. Concluding remarks there is a clear linkages between deforestation and worlds demands of fiber, food, and fuel understanding the underlying or indirect causes of deforestation is crucial to address redd and climate change most deforestation is driven from outside forestry sector e. The causes and effects of deforestation will be covered in more detail in later modules.

There is a clear linkages between deforestation and worlds demands of fiber, food, and fuel understanding the underlying or indirect causes of deforestation is crucial to address redd and climate change most deforestation is driven from outside forestry sector e. Biodiversity islowered because animals that use the trees as a food or shelter source are unable to survivewithout them or may have to make serious. It has resulted in the reduction of indigenous forests to 4 5 of their preagricultural area. Nevertheless, deforestation is a very big and important environmental problem which is yet to be effectively addressed. Sur ces vingt etdeux 22 participants, six 06 etaient des femmes, trois 03 des institutions. This change may represent as much as 20% 30% of the total carbon flux due to humans, i. Analysis of 650,000 satellite images, published in the journal science, reveal the extent of. In many countries today, deforestation is an ongoing issue that is causing the extinction of animals and plants as well as the loss of homes of indigenous people who used to live there.