摘要
本文对汀江上游观音桥水文站1990～2005年的降水量、径流量、输沙量等相关资料进行了统计分析,结果表明,降雨、径流和输沙量主要集中在4、5、6、8月份,均呈弱双峰型,峰值出现在6、8两个月,主峰值出现在6月份。运用回归分析发现降水量与径流量之间具有良好的正向相关性,而输沙量与二者之间相关关系都不明显;采用Kendall秩次相关分析法对降水量、径流量和输沙量进行趋势分析,在降水量和径流量变化不十分明显的情况下,输沙量有显著的下降趋势,表明汀江上游多年来的水土保持工作的取得了一定的效果。
Statistical data of the precipitation,runoff,sediment discharge from 1990 to 2005 recorded at Guanyinqiao Hydrometric Station on the upstream of the Tingjiang River was analyzed.The rainfall,runoff and sediment discharge concentrated in April,May,June and August appear as weak dual-peaks.They reach their peaks in June and August,and the highest point appear in June.Runoff correlates positively with precipitation,while neither of the two is correlated with sediment discharge,shown in regression analysis.The Kendall Rank Correlation analysis demonstrated a significant downward trend of sediment discharge,while the other two were not obvious due to soil and water conservation.
出处
《水文》
CSCD
北大核心
2010年第2期89-92,共4页
Journal of China Hydrology
关键词
长汀
观音桥
降水量
径流量
输沙量
水土保持
Changting
Guanyin bridge
precipitation
runoff
sediment discharge
soil and water conservation
