近50年来赣江流域水沙年内分配变化分析  

Variation of Annual Runoff and Sediment Distribution in Ganjiang River Basin over Past 50 Years

作　　者：张颖[1,2] 宋成成 肖洋[1,2,4] 张汶海[2] 朱立俊[5] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学水利水电学院,江苏南京210098 [3]平湖市水利工程质量监督站,江苏平湖314200 [4]河海大学水资源高效利用与工程安全国家工程研究中心,江苏南京210098 [5]南京水利科学研究院,江苏南京210029

出　　处：《水文》2013年第3期80-84,共5页Journal of China Hydrology

基　　金：国家重点基础研究发展计划(2012CB417001);国家自然科学基金(51179055);江苏省优势学科建设工程资助项目(YS11001)

摘　　要：基于赣江外洲站近49年（1960～2008）月径流量及42年（1966～2007）月输沙量实测资料，采用年内分配不均匀系数、完全调节系数、集中度（期）、肯德尔秩次相关检验法对赣江水沙年内分配变化进行分析。结果表明：①外洲站除80和90年代输沙量呈“双峰型”分布以外。其余各年代径流量、输沙量年内分配均呈明显的“单峰型”分布，6月到达峰值。②赣江径流量和输沙量的集中度与不均匀程度变化呈逐年代递减趋势，表明径流量和输沙量年内分配都趋于均匀态势。集中度、不均匀程度逐年下降与水库兴修、水土保持、人工采砂等因素有关。③赣江外洲站汛期与非汛期径流量变化趋势平稳，输沙量呈下降趋势，汛期径流量、输沙量波动幅度明显大于非汛期。The time series of monthly runoff and sediment load at the Waizhou Station on the Ganjiang River from 1960 to 2008 and from 1966 to 2007 were analyzed respectively with the methods of coefficient of unevenness, completely adjustment coefficient, concentration degree （period） and Mann- Kendall rank correlation test.The results show that： 1） Generally, the annual runoff and sediment load distribution reached a maximum in July at the Waizhou Station, and the curve of them have a single peak value except the curve of sediment load of 1980s and 1990s have a bimodal distribution. 2） The variation of concentration degree and unevenness of monthly runoff and sediment load have the same trend of decreasing decadally, which indicats that the annual runoff and sediment load have become well-distributed. The possible causes are the construction of reservoirs, the conservation of soil and water and the artificial sand mining etc. 3） The runoff distribution in flood-season and non-flood season have a stationary trend, while the sediment load presents a downward trend. The amplitude of variation in flood season is distinctly ~reater than that in non-flood season.

关 键 词：赣江 月径流量 月输沙量 年内分配 不均匀性 集中度 集中期 

分 类 号：TV143[水利工程—水力学及河流动力学]