Shifting cultivation is an agricultural farmers cut teeth cut and burned on high, especially forest dense forest he the upstream.Agriculture a shifting cultivation. As the system do agrarian hill tribes. The opium is cash crops. The farmers planted will choose a primary forest (Primary forest) in the area to farm land each time.The tribe group cutting teeth cut agricultural office and burn, shifting cultivation, including Hmong, Yao Lee muser. And Akha houses on values higher than the mean sea level. The seminary. 9 meters a level suitable for the planting of opium. Which is one of the farmers on a high at the moment. The forest was cleared for agriculture, farmers, this group of tribes, usually evergreen forest (Hill evergreen forest) and raw forest drought (Dry evergreen. Forest), it was found that the area of shifting cultivation. Can be traded, a heritage, guarantee and mortgage with.Deforestation resulting in biodiversity decline Cutting and destruction of forest cover area, make the environment worsen. And the biodiversity decrease. Forestry support biodiversity. The habitat of the wildlife. Apart from that source forest is also conducive to plant conservation of medicine. For the reason that national forest region in biological source to find something else to replace of new drugs (such as tag SEOL) deforestation could be destroyed genetic diversity (such as the immunity of crops) without being able to call back.Result in climate change. When there is no tree cover the sunshine to the earth. Trees also help expand the water cycle. Cause of steam into the atmosphere, rotation Deforestation makes the temperature of the earth rises. Be harmful to plants and animals.
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