摘要
该文根据2012年至2014年的5月和8月平潭竹屿口海域海水水质和沉积物的监测资料,采用单因子指标对该海域的环境状况进行评价,分析了主要监测因子的时空分布状况,并用线性回归判别主要监测因子之间的相关性及统计学意义水平。结果表明,平潭竹屿口海域海水中主要超标污染物是活性磷酸盐和无机氮,沉积物中有机碳、石油类和硫化物均符合海洋功能区要求;在时间分布上,海水中各监测因子变化趋势均不明显;在空间分布上,除了海水中石油类含量变化不明显外,其他监测因子呈较明显的变化趋势;海水中盐度与pH呈正相关,与其他监测因子呈负相关,石油类和氨氮与盐度线性相关不具统计学意义,活性磷酸盐与盐度相关最具统计学意义;沉积物中有机碳、石油类和硫化物三者之间均呈正相关,在0.05水平(双侧)上线性关系不具统计学意义。
According to the monitoring data from Pingtan bamboo island port sea water and sediment in May and August,2012 to 2014,single factor index was adopted to evaluate the environmental conditions in the area.The results showed that the main pollutants were the standard phosphate and inorganic nitrogen in the Pingtan Bamboo Island estuary seawater.The organic carbon,petroleum and sulfide in the sediments were in line with the requirements of marine functional zones.The in temporal distribution and change trend of the monitoring factor in seawater were not obvious.In the spatial distribution,other monitoring factors showed obvious trend expect the changes of oil content.The salinity was positively associated with pH and,negatively correlated with other monitoring factors.The petroleum and ammonia nitrogen were not significant linear correlation with salinity,There was a the most significant correlation between the activity of phosphate and salinity.organic carbon,petroleum and sulfide in sediment had a positive relationship,with a not significant relationship at the level of 0.05(bilateral)line.
作者
林小华
Lin Xiaohua(Pingtan Aquatic Technology Extension Station,350400)
出处
《水产养殖》
CAS
2019年第1期44-50,共7页
Journal of Aquaculture
关键词
平潭
竹屿口
环境现状
线性相关
Pingtan
bamboos
environmental status
linear correlation
