Climate is the state of the atmosphere, which is very sensitive to any changes in the environment. In recent times particularly onerous impact on the environment, and thus on climate, including a man has through deforestation, the expansion of large urban centers and industrial and building artificial water reservoirs.
Forest communities, in addition to the production of oxygen, have an important role of water retention. The consequence of deforestation is primarily increasing the amount of CO2 in the atmosphere, which, being a greenhouse gas increases the greenhouse effect on Earth. The result of this process is the increase of air temperature on the planet, resulting in, among others melting of ice sheets and ocean water levels to rise. After excision of the forest is limited retention, which results in more evaporation and rainfall, which have often involve heavy. They accelerate soil erosion and consequently desertification. Such cases occur in Africa, among others. Deforestation in mountainous areas increases the frequency of occurrence of wetland and terrestrial runoff, which also contribute to the degradation of soil cover. Reducing the retention function is still a very dangerous result-increases the risk of flooding. Thus deforestation causes major changes in the water, which is essential for the climate.