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贵州地处亚热带季风气候区,距南部海洋较近,水汽丰富,年降水量多在1100-1300mm,其中半数集中在4-8月。由于典型喀斯特高原地理环境,地形复杂,地势陡峭土层瘠薄,石漠化严重,土壤蓄水保水能力差。再加上降水时间,空间发布不均匀,年际之间变化大,常有区域性、阶段性的干旱发生,2009、2010、2012年连续三年贵州大部分地区遭受特大干旱,给人民群众生活、生产造成了严重的影响。
Guizhou is located in a subtropical monsoon climate zone, close to the southern ocean, rich in water vapor, annual precipitation more in the 1100-1300mm, of which half concentrated in April-August. Due to the typical karst plateau geographical environment, complex terrain, barren steep terrain, serious rocky desertification, poor soil water storage and retention capacity. Coupled with the precipitation time, spatial distribution of non-uniform changes between years, often regional, periodic drought occurred, 2009, 2010 and 2012 for three consecutive years in most parts of Guizhou suffered severe drought, to the people’s lives , Production has had a serious impact.