摘要
对钱塘江干流饮用水源地历史数据和现场采样数据进行相关性分析,结果表明:钱塘江干流河段CODMn与DO存在显著负相关,CODMn变化对DO的影响很大,CODMn愈高,DO值愈小;水温与DO存在显著负相关,DO的变化受水温影响很大,水温愈高,DO值愈小;pH与DO存在一定程度的正相关,但相关性不显著,DO随着pH的升高而略有上升,但变化幅度不大。相关分析显示,在其它条件(如水温、流速等)基本一致情况下,水体污染是影响钱塘江干流DO的主要因素。
The correlation analysis between historical data and road-test data from dringking water source of Qiantang River was done.The results showed that there was significant inverse correlation between DO and CODMn and temperature,and a certain extent positive correlation was found between DO and pH,while the higher the CODMn and temperature were,the obvious lower the DO was,and the pH influencing was on the contrary.As a result,it was the water pollution that mainly influenced DO in Qiantang River,which under almost the same condition of others.
出处
《环境保护科学》
CAS
2011年第4期13-16,58,共5页
Environmental Protection Science
基金
杭州市环保科研基金项目资助(200803)
关键词
钱塘江
溶解氧
影响因素
Qiantang River Dissolved Oxygen Influencing Factors
