摘要
根据2011年东山湾海洋生态环境的调查资料，对东山湾表层沉积物中Hg、As含量的分布特征及其潜在的生态风险，以及主要环境因子与Hg、As含量之间的相关性进行了探讨。结果表明，表层沉积物中Hg、As含量范围分别为（0．024～0．073）×10^-6和（3．00～5．88）×10^-6，均值分别为0．043×10^-6和4．24×10^-6。总体上，表层沉积物中Hg、As含量的平面分布呈湾顶高湾外低的格局，2007～2011年的年际变化呈下降之势。表层沉积物中有机质、粘土与Hg、As含量之间均呈正相关关系、但№与之的相关性比As显著。东山湾沉积物Hg、As含量符合GB18668-2002《海洋沉积物质量》一类标准，潜在生态风险较低。
According to the survey data of marine ecological environment in Dongshan Bay, the distribution characteristics and poten- tial ecology risk of Hg and As in surface sediments and relationship between Hg and As with main environmental factors were investiga- ted. Results showed that the concentrations of Hg and As ranged from 0. 024 x 10^6 to 0. 073 x 10^6for Hg and 3.00 x 10^6to 5.88 x 10^6for As, respectively. The concentration of Hg and As decreased during the period of 2007 - 2011, and decreased from the bay head toward outside. Analysis of relationship revealed significant positive correlation between Hg, As and total organic matter, clay con- tent in the surface sediment were observed. The relationship between Hg and total organic matter, clay content were significant than As. Contents of Hg and As in sediments from Dongshan bay met the first-class standard of marine sediment quality （GB18668-2002）. Index of potential ecology risk was low.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2013年第6期871-874,共4页
Marine Environmental Science
基金
国家海洋局海洋公益性行业科研专项(201005012)
东山湾受损生境修复生态工程和效果评价技术集成与示范(201305043-4)
关键词
东山湾
沉积物
时空分布
HG
AS
Dongshan Bay
sediment
spatio-tempral distribution
Hg
As
