沿海沉积营养物质对引发赤潮的潜在影响

从生物地球化学的角度阐述了引发赤潮的营养和环境控制因素,并在分析了赤潮藻的限制性营养元素(磷、氮、硅)和微量元素(铁、锰)环境地球化学行为的基础上,提出了沿海沉积营养元素的释放与赤潮之间的相关关系模式,同时指出了中国沿海近代沉积物中营养物的积累趋势及其对引发赤潮的潜在危害,这不仅为揭示赤潮发生机理开辟了新的研究方向,而且也为有效地防治赤潮危害提供了科学依据.

Potential harm of coastal sedimentary nutrient in inducing red tide

The nutritive and environmental factors inducing red tide were expounded from a biogeochemical viewpoint. Based on analyzing environmental behaviours of limiting nutrient elements (P, N) and trace elements (Fe, Mn), the correlative model between sedimentary nutrient and red tide are presented and tendency of the accumulation of nutrient in modern coastal sediments in China and its potential harm in inducing red tide were indicated, which opens up a new approach to reveal the mechanism of red tide inducing and provides scientific basis for prevention and cure of red tide harm.