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.

苏南区场主要漫滩相、湖沼相或冲湖相新近沉积软弱,结构松散,沉积零乱,成分复杂,饱水可液化细砂及较发,震或动力荷载的作用下有可能发生软震陷或砂液化。

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的富含有机质的湖沼相沉积环境、特定的质、形条件下水砷异常的原因。

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

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