生态环境学报2012，Vol.21Issue(2)：338-345,8.
桑沟湾海域叶绿素a的时空分布特征及其影响因素研究
The spatial and temporal distribution of chlorophyll-a and its influencing factors in Sanggou Bay
摘要
Abstract
6 cruises were completed in the period from April 2009 to February 2010 to investigate and analyze the chlorophyll-a (Chl-a) status in the surface and bottom layer seawater of Sanggou Bay, a typical marine culture area in Rongcheng, Shandong. The spatial and temporal distribution of local Chl-a, and its relationships to the main environmental factors including water temperatureand nutrients were discussed. Results showed that the Chl-a content varied between 0.40 and 7.46 μgL-1 with a mean value of 2.17 μg-L-1 in the surface seawater. In the bottom seawater, the Chl-a content varied between 0.36 and 9.77 μg-L-1 with a mean value of 2.14 μg-L-1. With regards to seasonal variation, Chl-a content was the highest in summer, followed by autumn, spring and winter in sequence. The horizontal distribution of Chl-a showed that its content decreased from inner area to the outside of the bay in spring and winter. However, in summer and autumn, there was no obvious trend. As for vertical distribution, Chl-a content was higher in the surface seawater than that in the bottom seawater in summer and this trend was reversed in winter. In spring and autumn, Chl-a was evenly distributed vertically. Correlation analysis showed that the Chl-a content was positively related to water temperature, but when comparing the Chl-a content with dissolved inorganic nitrogen (DIN), there was no obvious correlation between them. Overall, the Chl-a distribution and seasonal variation are significantly affected by marine cultures, hydrographic environments, land runoff and exogenous input into the bay. The kelp and shellfish cultures as well as the terrestrial nutrients input are important influence factors of Chl-a distribution pattern.关键词
桑沟湾/叶绿素a/时空分布/环境因子Key words
Sanggou Bay/ chlorophyll-a/ spatial and temporal distribution/ environmental factors分类
农业科技引用本文复制引用
郝林华,孙丕喜,郝建民,杜蓓蓓,张新军,徐玉珊,毕进红..桑沟湾海域叶绿素a的时空分布特征及其影响因素研究[J].生态环境学报,2012,21(2):338-345,8.基金项目
国家海洋局海洋公益性行业科研专项(200805031) （200805031）
