1. The definition of drought,
drought (Drought) refers to the dryness of the weather. Due to a less rain than normal. Or rain does fall season. A longer period than usual And covers a wide area Causing a shortage of drinking water use. Lack of water causes the plants do not grow normally. Damage and general starvation. Drought is a natural disaster is one that occurs every year. Especially in the Northeast, central Thailand. This is where the influence of the southwest monsoon can not reach. Cause hunger, poverty If there is no storm moves through the year, it will cause more severe droughts. Because of rain dumped by the long drought that occurs every year. It is between the months of June and July. During the cultivation of such crops is dehydrated. Get damaged Shortages of drinking water, human and animal use. Affect the maintenance of life, including the economy and society. The violence is more or less depending on many factors, such as humidity in the air. Soil moisture Period of drought And the size of the area is threatened by drought, etc. (Department of Disaster Prevention and Mitigation. A 2547: 1 -72), Kemp (Kemp, 1994, 41-42, claiming the Department of Disaster Prevention and Mitigation, 2547)), it has a different meaning that drought (Aridity) and drought (Drought) a. The drought Will consider the impact of rain that fell less than average, and is characterized by permanent (Permanent Feature) climate in the region, such as the desert of the world as an example of the desert, a fixed amount of rain. less than 100 millimeters per year The drought is a temporary (Temporary Feature) at the drop of Faso or the amount of water less than normal precipitation. By the time the variability of climate, such as higher temperatures, low humidity and strong wind. Drought no exact definition. This can happen at any region of the world, meaning simply that there is no rain in the area. If the effects of the drought have been referring to a time when it does not rain more lasting. As a result, the growth of plants and creatures in that area (Kovach, 1995,88-95) drought conditions exist on all continents of the world. Life in space, it can adapt to the environment it. Or a natural balance of the desert itself, such as in Africa. The drought can occur in all areas as well. There will be more or less severe, depending on many factors, including physical factors. Ecological factors And the factors of human activity Which can be classified according to agricultural drought. As Thornton South West. (Thornthwaite) is divided into four categories (Kemp 1994,45-47 cited in the Department of Disaster Prevention and Mitigation, 2547).
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