Dongchuan area is a national-level poor county, located in northeastern Yunnan province. There are some serious ecological environment problems such as soil and water erosion, land desertification, debris flow and so on. Because of inconvenient communications and the lack of information, it has extensive poverty areas. Additionally, the large elevation difference makes the obvious vertical climatic zones including subtropical zone, temperate zone and cold zone, which forms the diversification of agriculture...
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