研究化学物质的扩散通量对于了解沉积物和上覆水体之间物质的迁移、交换及其量的动态关系是很重要的。这方面的工作大体说来是从七十年代开始的东海陆架测区地处长江口外,地形比较开放,海底多属泥质或泥质粉砂区,部分地区下伏有残留砂,因此底质多样,且其中还居留着底栖动物,尤以多毛类为主。由于它们的活动可能对SO_4~=通量有制约性的影响。为了研究陆架测区SO_4~=通量的扩散移动特点及其量的各种关系本文依据SO_4~=通 Studying the diffusive fluxes of chemical substances is important to understand the dynamic relationships of material migration, exchange, and quantity between sediments and overlying water bodies. The work in this area is generally speaking that the East China Sea Shelf Zone is located outside the Yangtze Estuary since the 1970s and has a relatively open topography. Most of the seafloor is muddy or muddy silt, with some residual sands underneath. Various species, of which there are still living benthic animals, especially in the multi-hairy. Their activities may have a restrictive effect on the SO_4 ~ = flux. In order to study the characteristics of diffusion and movement of SO_4 ~ = fluxes in the geo-survey area and their relationships,