摘要
运用数理统计方法,对晋中市1961-2000年实测气温和降水资料进行分析。结果表明:近40a晋中市的年平均气温呈上升趋势,20世纪90年代末增温明显;但不同季节气温升高速率不同,冬季增温尤其明显;春季气温升高使≥10℃初日有提前的趋势。年降水量则呈下降趋势,平川玉米需水关键期的降水明显减少,山区相反。这种气候变化特点会对晋中市玉米生产产生多方面的影响。
Based on the observed data from 1961 to 2000 in Jinzhong City, Shanxi Province,the temperature and precipitation were analyzed by using regression and correlation methods. The results showed that the annual mean temperature appeared to be increasing in the last 40 years. The trend of temperature increase was obviously in the late of 1990＇s. The rate of temperature increase was different in the different seasons,but warming up in winter was significant. The temperature increase in the spring made the beginning day of≥ 10℃ earlier. The precipitation appeared to be decreasing. The precipitation obviously decreased during the key water-required periods of Maize in the plain areas,but increased in the mountain areas. These changes made impacts on Maize production more complicated.
出处
《中国农业气象》
CSCD
2006年第2期125-129,133,共6页
Chinese Journal of Agrometeorology
基金
山西省气象局2003年重点研究项目(0303)
关键词
气候变化
玉米
影响分析
Climate changer Maize
Impact analysis
