Site soils in southern area of Jiangsu province belong to washland sediment or limnetic facies sediment.The components of sediment are very complex and process of sedimentation is in disorder.

苏南土主要漫滩相、沼相或冲相新近沉积软弱土,结构松散,沉积零乱,成分复杂,饱水可液化粉细砂层及粉土层较发育,在震或动力荷载作用下有可能发生软土震陷或砂土液化。

We propose that As anomalism in groundwater possibly resulted from the combined effects of organic matter-enriched lacustrine sediments, geological setting and topographical characteristics.

通过研究，可以看出以还原环境主富含有机沼相沉积环境、特定、形条件下水砷异常原因。

The Diatom Paleolimnology Data Cooperative (DPDC) is a database of diatom and associated ecological and paleolimnological data useful in studying global change.

硅藻古沼学数据库（DPDC）全球变化研究提供了有关硅藻植物数据、古沼学和其它生态学数据和记录等。