1955—2019年安徽省干湿格局与影响因素分析  

Analysis of Dry and Wet Pattern and Its Influencing Factors in Anhui Province From 1955 to 2019

作　　者：渠玮娟 朱玺 吴雨纯 汪静 张本发 许梅越 孙朋 QU Wei-juan;ZHU Xi;WU Yu-chun;WANG Jing;ZHANG Ben-fa;XU Mei-yue;SUN Peng(School of Environment and Mapping Engineering,Suzhou University,Suzhou 234000,China)

机构地区：[1]宿州学院环境与测绘工程学院,安徽宿州234000

出　　处：《西安文理学院学报（自然科学版）》2021年第4期60-66,共7页Journal of Xi’an University(Natural Science Edition)

基　　金：安徽省教育厅高校自然科学重点项目(KJ2019A0670);宿州学院博士科研启动基金(2017jb04);宿州学院地理科学一流专业项目(szxy2020ylzy02);宿州学院优秀学术技术骨干项目(2020XJGG07);宿州学院科研平台开放课题项目(2019ykf15);国家教育部产学合作协同育人项目(201902164012);国家级大学生创新训练项目(202010379056).

摘　　要：基于安徽省15个气象站点1955—2019年逐日气象观测数据,应用ArcGIS克里金插值、Mann-Kendal(M-K)检验、气候倾向率、相关性分析等方法,研究降水量、蒸散量和干湿指数HI时空变化及影响因素.结果表明:研究区65a干湿指数HI和降水量均表现为波动上升,而蒸散量呈下降趋势;从年内变化来看:降水量和蒸散量均为先增加后减少,在6-7月份处于峰值且为单峰型,而干湿指数HI则表现为夏季最大,其次为春冬季,而秋季最小;从年代际变化来看,研究区降水量和蒸散量呈上升趋势,而干湿指数HI呈缓慢上升趋势;研究区内干湿状况的空间分布差异明显,总体呈北部干燥、南部湿润的格局,其中南部呈以黄山为湿润中心向四周逐渐干燥的格局.相对湿度与干湿指数HI为正相关且影响最为显著,其次为平均日照时数.Based on the daily meteorological observation data of 15 meteorological stations in Anhui Province from 1955 to 2019,the spatiotemporal variation and influencing factors of precipitation,evapotranspiration and dry wet index of HI were studied by using ArcGIS Kriging interpolation,Mann-Kendal(M-K)test,climate contribution rate and correlation analysis.The results showed that in the study area of 65 years,the dry wet index HI and precipitation showed a fluctuating upward trend,while the evapotranspiration showed a downward trend.From the change of the year,the precipitation and evapotranspiration increased first and then decreased,peaked in June and July,and the dry wet index of HI was the largest in summer,followed by spring and winter,and the smallest in autumn.From the interdecadal change,the precipitation and evapotranspiration showed an upward trend,while the dry wet index of HI showed a slow upward trend.The spatial distribution of dry and wet conditions in the study area is obviously different,and the overall pattern is dry in the north and wet in the south,and the pattern is gradually dry in the south with Huangshan Mountain as the humid center.The relative humidity had a positive correlation with the dry wet index HI,and the effect was the most significant,followed by the average sunshine hours.

关 键 词：安徽省 干湿变化 蒸散量 干湿指数 影响因素 

分 类 号：P426.616[天文地球—大气科学及气象学]