摘要
为分析祖厉河流域降水的年内均匀性,通过降水集中指标(G_(ini)系数、C_d、P_(CP))研究降水年内均匀性的时空变化特征,发现祖厉河流域内降水集中指标(G_(ini)系数、C_d)在空间上表现出自西南向东北增大的变化趋势,集中期则表现出延迟的特征;由于气候变暖和人类活动的影响,G_(ini)系数增大而P_(CP)值减小;进入21世纪后,由于流域内降水量的减少,降水年内分布趋于均匀,集中期有所延迟;祖厉河流域内干湿气候与季风的活跃度密切相关。
In this paper,precipitation in the Zuli River Basin was taken as the research object to study the spatio-temporal variation characteristics of precipitation intra-annual uniformity through precipitation concentration indexes(G_(ini) coefficient,C_(d) and P_(CP)).The results show that the precipitation concentration index(G_(ini) coefficient and C_(d))in the Zuli River Basin increases from southwest to northeast,and the precipitation concentration period is delayed.Due to the climate warming and the impact of human activities,G_(ini) coefficient increased while P_(CP) value decreased.However,since the beginning of the 21 st century,due to the decrease of precipitation in the basin,the annual distribution of precipitation tends to be uniform,and the concentration period is delayed.The dry and wet climate in the Zuli River Basin is closely related to the activity of monsoon.
作者
杨富元
梁丽霞
田伟
宋海萍
王一博
YANG Fu-yuan;LIANG Li-xia;TIAN Wei;SONG Hai-ping;WANG Yi-bo(Yintao Project Water Resource Utilization Center,Lanzhou 730000,China;Lanzhou University,College of Earth and Environmental Sciences,Lanzhou 730000,China)
出处
《水电能源科学》
北大核心
2021年第11期5-9,共5页
Water Resources and Power
基金
国家自然科学基金项目(41877149)。
关键词
祖厉河
G_(ini)系数
降水集中
季风
Zuli River
G_(ini)coefficient
precipitation concentration
monsoon
