甘肃省白龙江流域泥沙时空变化特征及演变趋势研究  

Spatiotemporal variation characteristics and evolution trend of sediment in the Bailong River Basin,Gansu Province

作　　者：王启浩 吕亚斌 张德栋 WANG Qihao;LV Yabin;ZHANG Dedong(Gansu Hydrological and Water Resources Center,Lanzhou Gansu,730000,China;Gansu Longnan Hydrological and Water Resources Survey Center,Cheng County Gansu,742500,China)

机构地区：[1]甘肃省水文水资源中心,甘肃兰州730000 [2]甘肃省陇南水文水资源勘测中心,甘肃成县742500

出　　处：《江西水利科技》2025年第1期32-37,共6页Jiangxi Hydraulic Science & Technology

摘　　要：为进一步研究白龙江流域水沙效应及成因,利用流域实测泥沙资料,采用水文统计法、一元线性回归法、Mann-Whitney检验法、MWP检验法对流域泥沙的年内分配、年际变化及演变趋势、变异年份、空间分布特征进行深入研究。结果表明:白龙江流域泥沙年内分配极不均匀,均匀程度从上游向下游逐渐减弱;年际变化较大,变化剧烈程度从上游向下游逐渐增强;流域上游泥沙变化趋势呈微弱增大趋势,与中、下游泥沙年际变化过程相对应,减小趋势均为显著;流域中、下游输沙量在1993年出现变异,上游输沙量在1974年出现变异;中游输沙量大,下游次之,上游最小,人类活动对输沙量的影响较大。In order to further study the water and sediment effects and their causes in the watershed,measured sediment data in the watershed were collected.Hydrological statistics,univariate linear regression,Mann Whitney test,and MWP test were used to conduct in-depth research on the annual distribution,interannual variation and evolution trend,variation year,and spatial distribution characteristics of sediment in the watershed.The results indicate that the distribution of sediment is extremely uneven throughout the year,with the degree of uniformity gradually decreasing from upstream to downstream;The interannual variation is significant,and the intensity of the change gradually increases from upstream to downstream;The trend of sediment changes in the upper reaches of the basin shows a slight increase,while the interannual variation of sediment in the middle and lower reaches corresponds to a significant decrease;The sediment transport in the middle and lower reaches of the basin showed variation in 1993,while the sediment transport in the upper reaches showed variation in 1974;The sediment transport in the middle reaches is large,followed by the downstream,and the upstream is the smallest.Human activities have a significant impact on sediment transport.

关 键 词：泥沙 输沙量 趋势 白龙江 

分 类 号：TV124[水利工程—水文学及水资源]