摘要
对潍坊市1951—2015年共55年的年降水量和每年的最大日降水量进行了趋势分析和突变检验。结果表明,绝大部分降水都集中于夏、秋两季,夏季占全年降水量的62.3%。日降水量>50mm、达到暴雨级别的共有104d,均出现在夏、秋两季。每年总降水量和四季的降水量均呈现出减少趋势,年降水量在1975年左右出现了突变现象。只有春季的最大日降水量呈现出缓慢增加趋势,每年的最大日降水量和夏季、秋季以及冬季的最大日降水量均为下降趋势,最大日降水量在1985年和2008年左右出现了突变现象。因此,在全球变暖的大背景下,位于暖温带大陆性季风气候的半湿润区的潍坊市正面临着降水量减少、干旱现象加剧等现象。
The trend analysis and sudden change test were applied to the annual precipitation and annual maximum daily precipitation in Weifang City during 1951-2015.Most of the annual precipitation in concentrated in the summer and autumn.The precipitation in summer accounted for 62.3% of the annual precipitation.The total days of daily precipitation over 50 mm was 104 d,which were all in summer and autumn.All of the annual and seasonal precipitations showed a decreasing trend,while the annual precipitation changed suddenly in 1975.For the maximum daily precipitation,the increasing trend was only found in summer.The annual maximum daily precipitation changed suddenly in 1985 and 2008.Therefore,under the background of global warming,the Weifang City,located in sub-humid region of the warm temperate continental monsoon area,faces with reduced precipitation and intensified drought.
作者
覃平阳
吴国灿
QIN Ping-yang;WU Guo-can(Weifang University of Science and Technology,Shouguang Shandong 262700;College of Global Change and Earth System Science,Beijing Normal University;Joint Center for Global Change Studies)
出处
《现代农业科技》
2019年第10期158-161,共4页
Modern Agricultural Science and Technology
基金
国家重点基础研究发展计划(2015CB953703)
国家自然科学基金(41405098)
