【摘要】 文章根据历史文献及相关研究 ,对华北地区气候变化的阶段性和区域内部在各阶段的旱涝分布差异进行研究 ,认为 :两千年来华北地区的气候变化大体上是稳定与不稳定交替发生 ,且第二个稳定时期里小冰期的气候波动是该区气候变化的突出特征 ,此后华北地区的气候系统重新进入一个比较稳定的时期 .更多还原

【Abstract】 The paper carries on the research about the phased climate varities, the differences of droughty and humid distributing in the internal area and Hua Bei. And that we made the research according to the collected recordation and correlative research result. We find that the steady and unstable changes in temprature occur altermatly and the phenomenon represent Huabei climate varieties. And the fluctuant climate of ice age is prominent charateristic in the second steady phase. Following, Huabei climate system came into remewedly a relative steady phase.更多还原