4. Forestry work in the forestry affects the water quality deterioration with several following
g logging. At present is the use of machines On energy-saving in wood cutting drag
.The use of oil as a fuel. Sometimes there may be water or leak. For wood cutting and wait;
drag. When the rain came clean oil sixth and their material, tannin resin from wood into water 6
.A road to lead the car into the forest, are dragged out. Cause the soil erosion easily
due to cut the stick out and to adjust. Make น้ำใน streams have increased sediment
C.Deforestation is clearly more important factors in making the water quality
.Worsen. Namely, causing erosion on the soil surface. The blow and sewage into the water. The quality of water and physical Chemical biology and lost, which has numerous reports about it.What happened, another is, sediment, litter and animals, chemicals, microbes are ทำให้น้ำ has no use almost all
.This also makes the traditional properties changed both physical chemistry or biology, or in any case combination. Deforestation is the promotion of water quality is not used. And animals cannot live directly
.Cultivation and maintenance of the forest. Since the natural forest is destroyed much must
planting replacement by forest value of economy, is a fast growing trees, therefore, fertilizer and put
.Pesticides, which may have some residues remain. When it rains, it now took these chemicals into the river too
.
. 5 mining The mine injection caused muddy waters and sediment in rivers, the scrap pile of rocks and minerals
.May be leached flows into the stream. The road cut into the mine to convenient transportation
conveyor ore is part of it collapsed and the soil mineral smelting factory located along the river
.The dirty water. By solid waste or mineral into the river, the depreciation
. The mine to dig the soil along the shores of collapse was born, stream sediment
.Shallow mining in addition to the damages to the water. The area in the area
ruined. Due to the need to cut down the trees in the area out mining activities have
.Turbid concentration and acidity is alkaline and can harm aquatic animals and the human body
6. Construction and road building houses various
The dam, to adjust the soil smooth by tractors and grinding to
.Smooth or use the bulldozer front. These are the soil is disturbed, easy to collapse
cause sediment in the stream more
7. Public health
. Place and health care, such as hospitals, clinics, or
.Clinical treatment, especially pathogens may release various types into the water {Y: I} always. Although
.
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