东营近海海域地质环境质量评价

Evaluation of Geological Environment Quality in Dongying Offshore Area

摘要:

该文在东营市海洋地质调查获得大量数据的基础上，开展近海海域地质环境质量综合评价，反映近海海域地质环境质量现状和变化趋势，为海洋经济的可持续发展和海洋生态环境保护提供依据。选取海岸侵蚀与淤积、活动断裂与地震、灾害地貌与滑坡、浅层气、底辟、埋藏古河道（古湖泊）、表层沉积物质量、海水质量、软土、砂土液化10项指标，采用层次分析法和综合指数法，对东营市近海海域地质环境质量进行了评价。结果表明：研究区大部分区域地质环境质量为优等和良好级别，面积8875km2，占总面积的86.58%；中等区主要分布在研究区的北部、东南部和东营港近岸区，面积1200km2，占总面积的11.71%；较差区主要分布在研究区的北部及黄河口外围海域，面积175km2，占总面积的1.71%。

Abstract:

On the basis of a large number of data obtained from the marine geological survey of Dongying city, comprehensive evaluation of geological environment quality of offshore water has been carried out. It can reflect the current situation and change trend of geological environment quality of the offshore water, and provide a basis for sustainable development of the marine economy and the protection of the marine ecological environment. Choosing 10 indexes, such as coastal erosion and siltation, active faults and earthquakes, disaster landforms and landslides, shallow gas, diapir, buried ancient river (ancient lake), surface sediment quality, sea water quality, soft soil and sand liquefaction, by using AHP and comprehensive index method, geological environment quality of Dongying coastal water has been evaluated. It is showed that geological environment quality in most areas in the study area is excellent and good, covering an area of 8875km2 and accounting for 87% of the total area. The mediumsized area is mainly distributed in the north and southeast of the study area and the coastal area of Dongying Port, covering an area of 1200km2 and accounting for 12% of the total area. The poor area is mainly distributed in the north of the study area and the surrounding waters of the Yellow River Estuary, covering an area of 175km2 and accounting for 2% of the total area.