晋中地区气候变化规律及其对种植业的影响

Local Climate Change and Their Impacts on Plantation in Jinzhong

根据晋中1961-2007年11个站点的气温、降水、日照、无霜期等气候资料和粮食、蔬菜的种植面积、农业气象灾害等资料,分析了晋中47a来气候变化规律及其对种植业的影响。结果表明:当地气温呈上升趋势,升温幅度0.34℃/10a;无霜期日数呈增加趋势,增加幅度为4.7d/10a;降水以35.9mm/10a的速度减少;20世纪90年代的日照时数减少明显。粮食作物种植面积减少,但蔬菜、经济作物种植面积增加。

Based on weather documents recorded by the 11 stations of Jinzhong from 1961 to 2007,the climatic changes of the Jinzhong were studied.The results showed that the temperature increased at the rate of 0.34℃ per 10 years and frost-free period increased at the rate of 4.7 days per 10 years,but precipitation decreased at the rate of 35.9mm per 10 years and sunshine hours decreased significantly in 1990s.So the area of food crops decreased but the vegetables and cash crops planting area increased.