Abstract:

ea ice is a unique habitat for organisms in polar seas.The composition,distribution and abundance of organisms in sea ice vary on temporal and spatial scales and are controlled by physico-chemical and biological factors in the surrounding environment.This thesis presents an introduction of the significant study on dissolved organic matter(DOM) pools and particle organic matter(POM) in seaice systems.This thesis concludes the study on the main biological assemblages and their roles in sea ice,the mechanism of DOM and POM in the process of origin,transport and translation.The biochemical composition in the organic matter of sea ice(carbohydrate,lipids,EPS) is also discussed.It as well puts forward some scientific questions which are needed for further research.