五台山气候变化特征及影响分析

Climatic Change Characteristics and Its Impaction in Wutai Mountain

基于1998年—2019年五台山逐日平均气温、最高气温、最低气温、降水、日照时数资料,针对五台山多尺度光、温、水的变化特征及其对旅游发展的影响进行了分析.结果表明:(1)研究期间,五台山年平均气温为升温趋势,平均每10 a升高0.10℃;年平均最低气温升温明显,且春季最低气温升温速度最快;(2)五台山年降水量、降水日数极显著增加,年降水量平均每10 a增加124.66 mm,年降水日数平均每10 a增加17.44 d;夏季降水量最多,占全年的60.87%;四季降水量和降水日数均为增加趋势,夏季增速最快;五台山全年67%的降水量为小雨和中雨贡献;(3)各等级降水量、降水日数均为增加趋势,其中全年大雨的降水量增加幅度最大、小雨的降水日数增加幅度最大;(4)五台山年日照时数极显著减少,四季中,春季日照时数最多;各季日照时数均为减少趋势,其中夏季、秋季、冬季日照时数极显著减少.

Based on the daily temperature(including average,lowest and highest temperature),precipita-tion and sunshine duration data of Wutai Mountain from 1998 to 2019,the multiple time scale variation charac-teristics of temperature,moisture and radiation were studied.Meanwhile,we also analyzed its impaction on tourism development.The results showed that:(1)There was an increasing trend in temperature at a rate of 0.1℃/10 a.The trend of the annual average minimum temperature was the most evident,and the average mini-mum temperature was increased most in spring;(2)The annual precipitation presented a statistically significant increasing trend at a rate of 124.66 mm/10 a,and the annual precipitation days increased significantly at a rate of 17.44 d/10 a in Wutai Mountain.Summer Precipitation was about 60%of the annual total amount and played a major role in Wutai Mountain.The seasonal precipitation and precipitation days both increased,and in summer occurred the remarkable change rate.The contribution of light and moderate rainfall to the annual precipitation was 67%;(3)All precipitation indices on different grades increased,and the amount of heavy rain and the number of light rain both had a remarkable upward trend;(4)The annual sunshine duration had significant de-creasing trend.During four different seasonal sunshine durations,the sunshine duration in spring was the most.The sunshine durations in four seasons all decreased,and the changing trend of the summer,autumn and winter sunshine duration showed a significant decreasing trend.