| 防城港湾连续10年海水水质变化及其影响因素分析 |
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| 引用本文： | 庞敏倩. 防城港湾连续10年海水水质变化及其影响因素分析[J]. 广西科学院学报, 2021, 37(1): 29-36 |
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| 作者姓名： | 庞敏倩 |
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| 作者单位： | 广西壮族自治区海洋环境监测中心站,广西北海 536000 |
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| 基金项目： | 广西科技计划项目（桂科AB20297018，桂科AD19110140，桂科AB20297037和桂科AB18126075）资助。 |
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| 摘 要： | 选取防城港湾(东湾、西湾和外湾)2010-2019年近岸海域海水水质的数据,对其海水环境变化情况及影响因素进行分析.研究参数包括化学需氧量(COD)、活性磷酸盐(DIP)、氨氮(NH+4-N)、亚硝酸盐氮(NO-2-N)和硝酸盐氮(NO-3-N).采用综合污染指数法和富营养指数法对防城港湾近岸海域海水水质变化进行评价,...
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| 关 键 词： | 港湾 水质变化 影响因素 广西 防城港 |
Analysis of Seawater Quality Variation and Influencing Factors in Fangchenggang Bay for the Past Ten Years |
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| PANG Minqian. Analysis of Seawater Quality Variation and Influencing Factors in Fangchenggang Bay for the Past Ten Years[J]. Journal of Guangxi Academy of Sciences, 2021, 37(1): 29-36 |
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| Authors: | PANG Minqian |
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| Affiliation: | Marine Environment Monitoring Center of Guangxi Zhuang Autonomous Region, Beihai, Guangxi, 536000, China |
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| Abstract: | The seawater quality data of coastal waters in Fangchenggang Bay (East Bay, West Bay and Outer Bay) from 2010 to 2019 were selected to analyze the changes of the seawater environment and the influencing factors.The research parameters include chemical oxygen demand (COD), active phosphate (DIP), ammonia nitrogen (NH4+-N), nitrite nitrogen (NO2--N) and nitrate nitrogen (NO3--N).The comprehensive pollution index method and the eutrophication index method were used to evaluate the water quality changes in the coastal waters of Fangchenggang Bay.Pearson correlation analysis was used to analyze the relationship between nutrients and each influencing factor.The results showed that the water quality of Fangchenggang Bay was generally good in the process of industrial development in the past 10 years.The pollution level of seawater quality ranged from good to light, and the main exceeding factor was active phosphate.The eutrophication level in the sea area was between mild eutrophication and moderate eutrophication.The concentration of nutrient salt was in the order of West Bay > East Bay > Outer Bay, and the distribution of Inner Bay was greater than that of Outer Bay.The inorganic nitrogen in the West Bay changed significantly with seasons, but the active phosphate did not change significantly with seasons.The concentration of inorganic nitrogen in the West Bay and the East Bay was significantly different during the wet season, which might be related to the large output of the coastal runoff of Fangcheng River in the West Bay in summer.In individual years, such as 2013 and 2017, the reasons for the excessive water quality were related to inadequate infrastructure in the area and the excessive discharge of pollutants from industrial enterprises. |
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| Keywords: | harbor water quality change influence factor Guangxi Fangchenggang Bay |
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