安徽农业科学2018，Vol.46Issue(11)：125-128,4.
近61年来渭河上游陇西段气候变化特征分析
Analysis on Climate Change Characteristics of Longxi in the Upstream of Wei River in Recent 61 Years
摘要
Abstract
Using the temperature and precipitation observation data in Longxi meteorological stations from 1957 to 2017,the characteristics of climatic change in Longxi in the upstream of Wei River in recent 61 years were analyzed by linear tendency analysis,Mann-Kendall test and t-test methods.The results showed that the temperature presented ascending trend in Longxi in the upstream of Wei River in recent 61 years,the tendency rate was 0.270 ℃/10 a.The temperature ascended at all seasons,most obviously in winter,the tendency rate was 0.312 ℃/10 a. From 1950s to early 1980s, the temperature decreased slowly, and the temperature began to rise gradually in the late 1980s.The temperature had a ascending abrupt change in 1997.The precipitation showed decending trend in the past 61 years,the tendency rate was 9.535 mm/10a. The precipitation showed decending trend in summer and autumn;the precipitation showed a small ascending trend in spring and winter.Pre-cipitation had no obvious abrupt change in the past 61 years.关键词
气温/降水量/变化特征/渭河上游/陇西县Key words
Temperature/Precipitation/Change characteristic/Wei River upstream/Longxi County分类
农业科技引用本文复制引用
周宝鹏,彭永武,赵春玲,丁春伟,苗国秀,刘小金,王胜..近61年来渭河上游陇西段气候变化特征分析[J].安徽农业科学,2018,46(11):125-128,4.基金项目
甘肃省气象局"县级综合气象业务技术带头人". （）
