大亚湾水环境质量变化与环境容量评估  

Assessment of water environment quality and environmental capacity of Daya Bay

作　　者：袁国明[1] 何桂芳[1] 

机构地区：[1]国家海洋局南海环境监测中心,广东广州510300

出　　处：《台湾海峡》2012年第4期472-478,共7页Journal of Oceanography In Taiwan Strait

摘　　要：2004～2008年期间,在大亚湾进行了春、夏季两航次水质的溶解氧(DO)、化学需氧量(COD)、活性磷酸盐(PO4-P)、无机氮(DIN)、石油类(oil)含量的监测,结果表明除溶解氧含量只是季节间变化外,其余均呈不断上升趋势,其中活性磷酸盐和无机氮含量升幅较明显,有超一类水质现象出现,且夏季水质普遍劣于春季.利用海湾内外水交换参数和这些年间污染物监测资料,估算以功能水质标准为控制目标的水环境容量,结果表明,大亚湾水质化学需氧量、无机氮仍有较大的环境容量,两者的环境容量分别为22 239 t/a和1 361 t/a;但活性磷酸盐和石油类环境容量偏小,两者的环境容量分别仅有19 t/a和23 t/a.The seawater quality monitoring on DO,COD,PO4-P,DIN and oil contents was carried out in Daya Bay in summer and spring from 2004 to 2008.The results indicated that pollution level increased continuously,except DO content,particularly for PO4-P and DIN contents,which are disqualified by class I seawater quality standard.Generally,seawater quality was poorer in summer than in spring.Assessment of the seawater environmental capacity,aimed at seawater quality level control,was accomplished based on the circumfluence parameter and year-round pollution monitoring data.It shows that Daya Bay still has an enough load for COD（22 239 t/a） and DIN（1 361 t/a）,but PO4-P（19 t/a） and oil（23 t/a）.

关 键 词：海洋环境科学 大亚湾 水质 环境容量 评估 

分 类 号：P76[天文地球—海洋科学]