the drought

The droughts have flogged to all the continents and have been present along the history of the humanity. many of these phenomena happen as result of climatic changes of the nature, the majority of they are associated possibly to the action of the people. drought is a period of dry in a geographic area where the rainfall is not normally present. during a drought there is a lack of precipitation. Droughts occur in all climatic zones. however, its characteristics change significantly from one region to another, the drought usually interferes seriuosly with human activity.

The causes of the drought could be caused by the traffic of the air in the oceans or by the human intervention . the dams and the systems of irrigation can be alter the natural flow of rivers and lakes, provoking that the water steams that rises to the air are insufficient to form clouds of rain. other factors that can contribute to the drought are the high temperatures, the low dampness and the strong winds.

Some consequences during a drought are that, the vegetation dies and the crops are spoilt affecting, in every case, the animals and human. still when the rain finally comes the soil can have damages by the excess of mineral or for the lack of nutrients and, consequently, it does that the crops are ruined. the erotion of the soil also generates problems and it is important that the areas inclined to the drought have good systems of irrigation. the severe droughts can provoke a general famine and to cause the death to thousands or even to million persons. the sandstorms and fires of bushes are other kind of dangers that happen in times of drought. in the middle of 1980 about 1 million persons died in Ethiopia due to the famine provoked by the drought.

The actions that could be realized to avoid the droughts, the urgent need is to teach to the population on the importance of look after our forests, of use technologies appropiate in the irrigation of the agriculture and of educating the new generations for they correct many of the mistakes committed by us and our forbears, principally for lack of information, and this way to avoid the droughts. We can establish our plan of prevention of droughts, where programs of conservation are included orientated to protecting the forests and the hydrographic basins located in them.