摘要
本文基于Visual FoxPro数据库开发软件对斯皮尔曼秩相关系数的算法进行了编程,并对大连市地下水变化趋势进行了分析。结果表明,大连市地下水中水质变化平稳断面占比为87.50%,呈显著下降趋势的断面占比为6.25%,水质恶化趋势明显断面占比为6.25%;大连市地下水整体矿化度较低;pH值主要在6.5~8.5之间,符合各类用水要求。
Based on Visual FoxPro database development software,the algorithm of rank correlation coefficient in Spearman is programmed,and the changing trend of groundwater in Dalian is analyzed.The results show that the proportion of sections with stable water quality change in Dalian is 87.50%,that with obvious downward trend is 6.25%,and that with obvious deterioration trend is 6.25%;The overall salinity of groundwater in Dalian is low;The pH value is mainly between 6.5 and 8.5,which meets all kinds of water requirements.
作者
孙大明
SUN Daming(Hydrology Bureau of Dalian,Liaoning Province,Dalian 116023,China)
出处
《水资源开发与管理》
2022年第6期26-30,56,共6页
Water Resources Development and Management
关键词
大连市
地下水
变化趋势
分布特征
Dalian City
groundwater
change trend
distribution characteristics
作者简介
孙大明(1986-),男,高级工程师,硕士,主要从事水环境监测与评价工作。
