The ecological footprint which was initially presented by William Rees is applied to analyze quantitatively the ecological footprint of Dalian in 2005 with the results indicating that, in 2005, the average footprint is 3.2018 hm² per person, the average load area is 0.849 hm² per person. The 3.78 times of ecological footprint to ecological load imply a big pressure over the ecological system, which is an adverse factor for the sustainable development of Dalian city.

This paper depicts in detail the Cambrian profile in east Liaoning peninsula, divides it into eight stratum units upwards including Jianchang, Mantou, Maozhuang, Xuzhuang, Zhangxia, Gushan, Changshan and Fengshan formations, and compares them, thus unifying the lithological sequence, paleontological sequence and stratigraphic sequence. The paleographic spreading and sedimentary evolution of stratigraphic sequences can be well studied based on the lithology of sedimentary rocks and fossil distribution, providing a useful tool in recuperating the climatic and environmental changes in Liaoning peninsula.