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以生态环境为主的环境基线调查， 是与深海采矿有关的研究内容之一， 它对保护海洋自然环境有着重要的意义， 而环境小区沉积物的分析研究是其中一个不可缺少的环节。通过对东太平洋中国开辟区内沉积物类型与碎屑成分特征的研究表明， 该区表层沉积物基本上是硅藻放射虫软泥， 个别站和层位是硅质粘土和深海粘土。碎屑物成分以放射虫壳体占绝对优势。它们以大洋生物源为主体，火山喷发源和陆源为次。沉积物组分构成特点同海洋环境密切相关。上述结果为地球化学、生物学和土力学等综合研究提供了基础资料， 并有助于了解开辟区本底环境的变化。
The environmental baseline survey mainly based on the ecological environment is one of the research contents related to deep-sea mining. It is of great significance to the protection of marine natural environment, and the analysis and study of the sediments in the environmental plot is an indispensable link. Based on the studies on sediment types and debris features in the eastern part of the eastern Pacific Ocean, it is shown that the surface sediments in this area are basically diatom radiolarian slimes, with silt clays and deep sea clays at individual stations and horizon. Debris components to radioactive worm shell accounted for absolute advantage. They are mainly marine biological sources, volcanic eruption source and terrestrial source times. Sediment composition features are closely related with the marine environment. The above results provide basic information for comprehensive research in geochemistry, biology and soil mechanics and help to understand the changes in the background of the open area.