摘要
根据福建兴化湾海域2006年12月（冬季）和2007年4月（春季）的水质监测资料,分析了表层海水无机氮和活性磷酸盐含量的时空变化特征,并对该海域表层水体的富营养化状况进行了评价.结果表明,冬、春两季,兴化湾表层海水无机氮含量的变化范围分别为0.30~1.30、0.34~1.10mg/dm3,均值分别为0.50、0.54 mg/dm3;无机氮的单项污染指数变化范围分别为1.0~4.2、1.1~3.7,均值分别为1.7和1.8.冬、春两季,其海水活性磷酸盐含量的变化范围分别为0.024~0.085、0.016~0.148 mg/dm3,均值分别为0.040、0.038 mg/dm3;其单项污染指数变化范围分别为0.8~2.8、0.5~4.9,均值则都为1.3.其次,该湾表层海水无机氮和活性磷酸盐含量的空间分布特征为西侧近岸水域的较高,往湾口方向递减.冬、春两季兴化湾表层海水富营养化指数（E值）分别为3.53和4.26,基本呈现富营养状态;富营养化严重的区域主要位于兴化湾西南部,其E值最高达29.9.
Based on seawater quality monitoring data collected in December 2006（winter） and April 2007（spring） in Xinghua Bay,Fujian Province,the spatial-temporal variability of DIN and PO4-P concentrations in surface seawaters were analyzed and the eutrophication status of surface seawaters of the bay were evaluated.During winter and spring,the DIN concentration ranged from 0.30 to 1.30 mg/dm3 and 0.34 to 1.10 mg/dm3,with corresponding averages of 0.50 and 0.54 mg/dm3,respectively.Additionally,the Pi based on the DIN ranged from 1.0 to 4.2 and 1.1 to 3.7,with averages of 1.7 and 1.8,respectively.The concentrations of PO4-P during winter and spring ranged from 0.024 to 0.085 mg/dm3 and 0.016 to 0.148 mg/dm3 with averages of 0.040 and 0.038 mg/dm3,respectively,while the Pi based on PO4-P ranged from 0.8 to 2.8 and 0.5 to 4.9,respectively,but with an average of 1.3.The DIN and PO4-P concentrations of the near bank waters in the west bay were higher than in other areas and descended toward the baymouth.The eutrophication indices（E） of the surface seawater during winter and spring were 3.53 and 4.26,showing that the bay has already undergone eutrophication.The most eutrophic area was found in southwestern of Xinghua Bay,which had a peak value（E） of 29.9.
出处
《台湾海峡》
CAS
CSCD
北大核心
2010年第4期525-531,共7页
Journal of Oceanography In Taiwan Strait
基金
国家海洋局第三海洋研究所基本科研业务费专项资金资助项目(海三科2009012)
国家908专项资助项目(908-02-01-02)
关键词
海洋化学
无机氮
活性磷酸盐
富营养化
分布
时空变化
兴化湾
marine chemistry
DIN
PO4-P
eutrophication
distribution
spatial-temporal variability
Xinghua Bay
