夏季南黄海跨锋断面的生态环境特征及锋区生态系的提出

基于2006年夏季综合调查资料,分析和研究了南黄海陆架锋的分布以及跨锋断面的生态环境特征,并结合锋区的生物学和生态学现象,提出了锋区生态系的观点.结果表明:在南黄海西部冷水团边界附近海域存在因潮混合而形成的浅水陆架锋(潮汐锋),其中以长江口东北部至江苏北部外海、山东石岛外海和海州湾外侧的陆架锋最明显,而且与表层冷水区相...

Characteristics of the ecological environment in cross-frontal sections and a viewpoint of the frontal region ecosystem in the southern Huanghai Sea in summer

Based on the comprehensive survey of the southern Huanghai Sea,the distribution of the continental shelf front and the ecological environment characteristics in cross-frontal sections were analyzed,besides,combined the biological and ecological phenomena in the frontal region,a viewpoint of the frontal region ecosystem was put forward.The results show that the continental shelf front (tidal front) induced by tidal mixing exists in the western boundary area of the southern Huanghai Sea Cold Water Mass,and the mostly notable fronts exist in the areas from the northeast sea of the Changjiang Estuary to the coastal sea,as well as Shidao coastal sea and the lateral area of the Haizhou Bay,which corresponds to the surface cold patch also;in the cross-frontal sections,the uplift of temperature,DO,pH and nutrient contours in the frontal region is the result of the upwelling of the bottom cold water,meanwhile,the accumulation of the nutrients and the upwelling of high concentration nutrients water in the frontal region paly an important role in the appearance of high concentration of Chl a;the distribution characteristics of the biochemical and hydrological elements also prove that the upwelling phenomenon indeed exists in the continental shelf frontal region and the boundary area of the southern Huanghai Sea Cold Water Mass;as a special environmental field in marine ecosystem,the continental shelf front has significant impacts on the ecological activities in the frontal region,and has close relationship with the intensive distribution of organisms;the unique distribution characteristic of the hydrological and biochemical in the frontal area of the southern Huanghai Sea reflects that a special living environment exists in the frontal area,therefore,a viewpoint of the frontal region ecosystem is put forward.