北部湾广西主要入海河流污染物入海通量变化及其影响因素分析  

作　　者：陈晓锋 林立苏 

机构地区：[1]国家海洋局珠海海洋环境监测中心站,广东珠海519015

出　　处：《科技资讯》2020年第14期62-67,共6页Science & Technology Information

摘　　要：通过对2012—2017年南流江、大风江、钦江、茅岭江和防城江的监测结果和相关资料进行统计分析,采用Spearman秩相关系数法研究了北部湾广西近6年主要入海河流各污染物的入海通量变化趋势,分析污染物入海通量年变化的影响因素。结果表明:北部湾广西5条主要入海河流污染物总量呈上下波动变化的上升趋势;除南流江和大风江各污染物入海通量总体呈现上升趋势外,其他3条河流各污染物的入海通量总体都呈现下降趋势;南流江的入海污染总量是最大的,化学需氧量占污染物入海总量的比重是93.9%;污染物的入海通量的变化主要受其年入海径流量的影响,同时也与广西区域经济社会发展密切相关。Based on the statistical analysis of the monitoring results and relevant data of Nanliu R iver,Dafengjiang River,Qinjiang River,Maoling R iver and Fangcheng river from 2012-2017,and using Spearman rank correlation coefficient method,this paper studies the change trend of the sea flux of the main rivers in Beibu Gulf Guangxi in recent six years,and preliminarily analyzes the influencing factors of the annual change of the pollutant flux.The results show that:the total amount of pollutants in the five main rivers entering the sea in Beibu Gulf Guangxi shows an upward trend of fluctuation;the total amount of pollutants entering the sea in the other three rivers shows a downward trend on the whole,except for the total amount of pollutants entering the sea in Nanliu River and Dafeng River;the total amount of pollutants entering the sea in Nanliu River is the largest,and the chemical oxygen demand accounts for the total amount of pollutants entering the sea The proportion of the total sea volume is 93.9%;the change of pollutant flux into the sea is mainly affected by the annual runoff,and is closely related to the regional economic and social development of Guangxi.

关 键 词：北部湾广西 入海河流 污染物入海通量 Spearman秩相关系数法 

分 类 号：X55[环境科学与工程—环境工程]