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我省中部地区是全国有名的贫困山区,由于雨少、分布不均,加之年际变幅大,水土流失严重,构成了特殊的干旱、半干旱生态类型区。本区主要依靠天然降水,年降水量425.3～596.5mm,冬春干旱少雨,7、8、9三个月雨量占全年降水量的40％以上,秋季易发生雨涝,地区分布上北部干旱少雨,旱灾频繁,中部次之。
Central part of our province is a famous poor mountainous area in the country. Due to the small rainfall and uneven distribution, coupled with the large interannual amplitude change and severe soil erosion, it constitutes a special type of arid and semi-arid ecological areas. The area mainly relies on natural precipitation, annual rainfall 425.3 ~ 596.5mm, winter and spring drought drought, 7,8,9 three months rainfall accounted for more than 40% of the annual rainfall, prone to rainfall in autumn, the regional distribution of northern drought It is less rainy and drought-prone, followed by central China.