水土保持学报2012，Vol.26Issue(1)：28-32,5.
近40年赣江年径流泥沙变化及影响因素分析
Analysis on Evolution Characteristics and Impacting Factors of Annual Runoff and Sediment in the Ganjiang River During 1970-2009
摘要
Abstract
In order to find out the evolution characteristics and its impacting factors of annual runoff and sediment in the Ganjiang river during 1970-2009,Mann-Kendall method and average difference T method were used in this paper.The results show that the amount of annual runoff in recent 40 years has no evident varieties and the annual sediment transportation has appeared obvious descendent trend.Moreover,with the application of sudden change point searching technology,the paper comes to a conclusion that the annual sediment transportation change duration of the Ganjiang river may be divided into three periods,1970-1983,1984-1991 and 1992-2009.The average annual sediment transportation of the above three periods is 2 281.27×107,803.75×107,462.72×107 kg,respectively.The leap-degree of every stage sediment transportation is 1 477.52×107 kg and 341.03×107 kg.The result is consistent with the data obtained by the double accumulation curve method.In order to find out the impacting forces of the annual runoff and sediment transportation changes,the relationships between precipitation,runoff and sediment transportation variation were analyzed.It is quite clear that human activities were the main reason causing the sediment transportation descent for nearly 40 years.Thus,the sediment from the Ganjiang river to the Poyang lake decreased by 40.53×107 kg every year accordingly.This study is not only helpful for ecological construction of soil and water conservation,but also helpful for rational development of water resources.关键词
径流量/输沙量/影响因素/赣江Key words
runoff/sediment transportation/impacting factor/Ganjiang river分类
天文与地球科学引用本文复制引用
郑海金,方少文,杨洁,谢颂华,陈晓芸..近40年赣江年径流泥沙变化及影响因素分析[J].水土保持学报,2012,26(1):28-32,5.基金项目
水利公益性行业科研专项经费项目“水土保持措施调控鄱阳湖径流泥沙技术研究”（200801066） “红壤侵蚀区坡面水土综合整治技术集成与示范”（200901049） “水土流失面源污染对鄱阳湖水质影响研究” （）
