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September 3, 2559 [online] that "the major cause of watershed areas, which makes them generally have deteriorated. Caused by human actions and natural 1. Human Action. A major cause The area in the upper reaches of the country. There was also a decline
of 1.1 felled forest. The land used for farming. Such as shifting cultivation And planting a permanent
1.2. Burning forests of different reasons, such as burning forests for land reclamation. To farming Or because the people who went to the forest logging and forest on fire to cook. Or to chase the beast, then Take care not to extinguish the fire before the Fires up
1.3. Construction of Buildings in areas upstream, such as roads, buildings, etc. without the village, and control water runoff down the channel. Or from any part of the building for good. Therefore the water flow eroded areas adjacent
1.4. Land use is not appropriate Based on the performance of the land, such as agriculture. Prone areas in the watershed. By subversion or using fire to clear forests in these actions will cause soil erosion. And breaking ground in the watershed. Then came the
second. The possibility of natural Enhance human action Making the area even more degraded watershed, including
2.1 caused heavy rain and surface water volume exceeds the normal
2.2 wind or tempest, soil erosion or movement in particular. for ward The mold And sandy soils where no adequate plant cover
2.3. Ground along a slope or hill, the men had to drop down below. Because the loam or sandy soils and areas where the water flows out of the ground. The lack of balance is naturally
growing as a class. One way to conserve soil and water
conservation methods watershed. Watershed conservation means the maintenance and restoration of natural resources. In the area of watershed Major forestry, soil and water, with the right approach. By the loss of natural resources, but less. And benefits worth It also includes protection. And natural resources, some of which were good quality as the original. Or better than another if it is found that the area of the watershed area. The decline has occurred Will need to continue to improve Restoration of degraded areas and those Always be restored as soon as possible. "
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