北太平洋海洋生态系统的动力——以胶州湾为例

通过剖析浮游植物生长特征和其集群结构与Si的重要性、Si的输入过程和生物地球化学过程以及Si限制浮游植物时间,揭示了在北太平洋的近岸水域,从秋天的雨季结束(11月)到春天的雨季开始(5月)之前,Si都限制浮游植物的生长,在北太平洋的远离近岸水域,浮游植物生长一直都受到Si的限制;探讨北太平洋风场变化的基本特点和规律与中国的沙尘暴发生、频率和强度,首次提出了北太平洋水域Si的提供系统,并且用框图模型说明了提供系统在运行过程中的每个流程。当北太平洋缺少Si时,该系统就向其水体输入大量的Si,来维持了北太平洋海洋生态系统的持续发展;为了补充输送到海洋的Si量减少,该系统提高了运行能力,造成内陆干旱、沙化面积扩大、沙尘暴强度增大。研究结果表明,在北太平洋水域,北太平洋的季风与北太平洋边缘的雨季在时间上密切相嵌,顺利完成近岸洪水和河流的输送与大气的输送之间的相互转换,一直保持向大海的水体输入大量的Si。而且,沙尘暴与北太平洋Si的缺乏在时间上紧密配合,其强度大小与Si缺乏的严重程度相一致。因此,人类在制定应对自然灾害的政策和战略时,要从人类的角度和地球的角度来共同考虑,有利于人类的健康生存,更应该有利于地球生态系统的持续发展。

The power in the marine ecosystem in North Pacific Ocean such as Jiaozhou Bay

The characteristics of phytoplankton growth and its assemblage’s structure,and the significance,imput and biogeochemical process of Si and the time of Si limiting phytoplankton growth,both of them,unveiled that in the coastal waters in North Pacific Ocean,from the rainy season end in autumn(November) to the rainy season start in spring(May),Si limited the phytoplankton growth,and that in the off-shore waters,phytoplankton growth had been being limited by Si.By the analysis of the basic characteristics and rules of wind field in the North Pacific Ocean,and of the appearance,frequency and intensity of the Chinese sand-storms,the authors firstly looked forward the system supplying nutrient Silicon to the North Pacific Ocean,and elucidated every flow in the running process of the system with schematic diagram,which represented that when there is lack of Si in the North Pacific Ocean,the system would imput the large amount of Si into its water body in order to maitain the sustainable development of the marine ecosystem in the North Pacific Ocean;For the complementarity of the decrease in the Si amount inputed into the sea,the system enhanced the capacity of its running,leading to the drought of inland,the enlargement of desertification area and the accretion of the sand-storm intensity.The results showed that in the North Pacific Ocean,the monsoon in the North Pacific Ocean and the rainy season in the fringe of the North Pacific Ocean,in temporal scale,closely embeded and successfully completed the alternate switch between the coastal floods and rivers’ transportation,and atmospheric one,resulting in keeping transporting a large amount of Si into the waters body in the ocean all the time.Moreover,the stand-storms were closely conjugated with the absence of Si in the temporal scale,and its intensity was consistent with the grave degree of the Si absence.Therefore,when constituting the policy and strategy for the natural disasters,human would considere by the views of both human and earth,so as to favor the health existence of human,and further to favor the sustainable development of the earth ecosystem.