As the terrain in plain region is flat,the topographical height difference for the drainage pipeline cannot be utilized so as to cause the pipelines in the lower reaches are buried too deeply.

Different geographic environments lead to the diversity of archaeological culture in the Three Gorges region and the Eastern Plain region.

An Analytical study of the Rivers Dykes and Dam s foundation Treatment in Plain Areas;

Based on the main characteristics of forest harvesting and utilization in Hebei plain areas,this paper suggests that forest resources shall be divided into three categories of economic forest,protection timber forest and timber forest,and different harvesting management measures shall be adopted for each forest category.

After compared and analyzed the constitution status of adults between island region(Zhoushan) and plain areas(Jiaxing),the results showed that:the overall level of constitution for adults at Jiaxing plain areas was better than that at Zhoushan islands region.