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Coastal marine and terrestrial junction zone of interaction between land and sea. From natural science perspective, the coastal zone is an extremely complex and highly diversified, the double-cross system is in constant motion and change. From an ecological perspective, the coastal eco-system in the energy, material exchange heated zone is a zone of high productivity, but it is also ecologically fragile zones. From the geological environment, due to the complex role of coastal driving force, frequent natural disasters and destruction, the coastal zone has become vulnerable regions of the geological environment. In this paper, the geological environment of the Laizhou Bay of the object of study, the use of the image processing and analysis, remote sensing image analysis, statistical analysis and qualitative analysis and quantitative calculated combining methods such manifestations, the driving force of the Laizhou Bay geological environment vulnerability factors and formation mechanism, vulnerability evaluation index system and evaluation methods to do a preliminary study and proposed to reduce the vulnerability of marine geological environment of the study area controlling measures, the following conclusions: (1) Laizhou Bay mainly on the south bank of the geological environment vulnerability The form of saltwater intrusion, coastal erosion, changes in wetlands. Statistics for 1987 to 2006 and calculated: seawater intrusion from entering the stage of accelerated development in the eighties of the last century to 1997, to reach the maximum. Invasion range from narrow to slightly expand into a stable stage since 1998. Coastal erosion: shoreline from the back to the basic stable from 1958 to 2006; the most coast isobath maintain backward trend, the late Back magnitude smaller; coastal beach erosion rate trends - Less small - slightly larger. Wetland changes characterized by natural wetlands, intertidal mudflat wetland area significantly reduce the increase in Yantian, a wide range of the breeding pool. (2) from both natural and anthropogenic factors, the system analyzes the the Laizhou Bay fragile geological environment driving force and formation mechanism. Natural factors in climate change, sea level rise, storm surges, wetland landscape fragmentation as the leading factor. Human activities mainly in Yantian, the development of aquaculture ponds and groundwater mining as the main factors. (3) according to the vulnerability of the manifestations of the driving factors of the geological environment of the study area, building evaluation index system, select the study area in 1987, 2002, 2006, three data calculated. By correlation analysis and factor analysis to determine the weight, and quantitative analysis of the vulnerability of the most important influencing factors result in a geological environment of the Laizhou Bay, the results showed that: human activities and sea level rise fragile geological environment. More objective method of gray-level vulnerability evaluation method is divided into five levels: stable, mild, generally, heavier, seriously. Through the overall vulnerability evaluate the different periods of the study area in 1987 for the heavier vulnerable, in 2002 and 2006, as a serious vulnerability, and there was a trend of gradually worsened. (4) for the fragile formation mechanism and the status quo of the geological environment of the Laizhou Bay area, the optimal regulation of the concept should first focus on prevention, using digital Coast technology, the establishment of a coastal disaster prevention system, and the establishment of integrated coastal zone management system The perfect coastal zone management legislation, on the basis of the combination of the implementation of the classification of disaster reduction and comprehensive disaster reduction, the implementation of sub-regional dynamic management.
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