摘要
该文运用数理统计法、滑动平均法、spearman秩相关系数法和曼-肯德尔检验法,对陆丰市蕉坑(二)水文站1970—2020年蒸发特征值变化、动态变化趋势等方面进行分析研究,得出该站蒸发量在时间序列上呈减少趋势,突变年为1984年,其后的下降趋势越来越显著;分季度来看,第3季度蒸发量最大,第1季度蒸发量最小,各季度蒸发量序列总体均呈现显著下降趋势。研究结果可为当地水资源评价及分析工作提供技术支撑。
By using mathematical statistics,Moving-average model,Spearman rank correlation Coefficient and Man-Kendal test,this paper analyzes and studies the changes and trends of evaporation characteristic values from 1970 to 2020 at JiaoKeng(II)hydrological station,Lufeng,the results show that the evaporation of the station has a decreasing trend in the time series,the abrupt year is 1984,and the decreasing trend is more and more obvious after that;In terms of seasons,the evaporation in the third quarter was the largest,and the evaporation in the first quarter was the smallest.The series of evaporation in all seasons showed a significant downward trend.The results can provide technical support for the evaluation and analysis of local water resources.
作者
刘腊梅
LIU Lamei(Shanwei Hydrological Survey Station of Guangdong Hydrology Bureau, Shanwei 516600, China)
出处
《广东水利水电》
2021年第6期44-49,共6页
Guangdong Water Resources and Hydropower
关键词
蒸发
动态
趋势
evaporation
dynamic
trend