摘要
利用碌曲、临潭、卓尼、岷县、临洮、永靖6个县气象站1981—2020年的降水、气温观测资料,采用距平分析法、滑动平均法等方法分析近40年来洮河流域的气候变化特征。结果表明:近40年来,洮河流域的年平均气温整体呈现显著上升趋势,上游碌曲增温最大,中游岷县、下游临洮增幅温幅度低于上游,临洮段气温呈上升趋势;年降水量整体呈缓慢减少趋势,上游段碌曲降水量呈下降趋势,但1990年代中期以后有微弱增加,与检验结果变化基本一致。
Based on the precipitation and temperature observation data of Luqu,Lintan,Zhuoni,Minxian,Lintao and Yongjing meteorological stations from 1981 to 2020,the climate change characteristics of the Taohe River basin in the past 40 years were analyzed using the methods of anomaly analysis and moving average method.The results show that the annual average temperature in the Taohe River basin has shown a significant upward trend in the past 40 years.The temperature increase in Luqu was the largest in the upper reaches,the temperature increase in Minxian County in the middle reaches and Lintao in the lower reaches was lower than that in the upper reaches,and the temperature in Lintao section shows an upward trend;In the past 40 years,the annual precipitation of the Taohe River has shown a slow decline trend as a whole,and the precipitation of Luqu in the upper reaches has shown a downward trend,but it has increased slightly since the mid-1990s,which was basically consistent with the change of the test results.
作者
刘婷婷
丁春伟
李小霞
周宝鹏
陈海贝
Liu Ting-ting(Lintao Meteorological Bureau of Gansu Province,Lintao,Gansu 730500)
出处
《农业灾害研究》
2023年第6期113-115,共3页
Journal of Agricultural Catastrophology
关键词
降水量
气温
洮河流域
气候变化
Precipitation
Temperature
Taohe River basin
Climate change
