| 摘要: |
| 从地质条件、地质环境及地质资源等多角度出发，建立包括地形地貌工程地质、水文地质、不良地质作用和地质灾害、活动断裂和地震效应、岸线资源等6个评价要素，15个评价因子，4个因子划分等级的多层次海岛工程建设地质适宜性评价指标体系，并利用GIS空间分析技术对宁波梅山岛进行评价。在此基础上，叠加梅山岛生态红线管控区，将二级管控区划分为适宜性差区。评价结果表明：梅山岛工程建设适宜性总体良好，适宜-较适宜工程建设区面积占比达75.5%，可满足近期规划建设用地需求；近深水岸线区均为适宜-较适宜，其中未开发利用长度6.1 km，可有效支撑梅山岛国际港口城市新城区建设。该评价结果可为梅山岛的开发利用及生态保护提供科学依据，同时对完善工程建设地质适宜性评价体系具有一定的理论意义。 |
| 关键词: 海岛 GIS 工程建设适宜性评价 生态 |
| DOI：10.11759/hykx20190727001 |
| 分类号:P748;P642.5 |
| 基金项目:中国地质调查局资助项目（ND20181002，DD20190260） |
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| GIS-based geological assessment for engineering construction in the Meishan Island, Ningbo |
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YANG Guo-qiang, JIN Yang, LI Yun, JIANG Yue-hua, GU Xuan, MEI Shi-jia, ZHANG Hong
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Nanjing Center, China Geological Survey, Nanjing 210016, China
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| Abstract: |
| By considering the geological conditions, environment, and resources, this paper establishes a multi-level index system for geological assessment, which includes 6 aspects (topography, engineering geology, hydrogeology, poor geologic function and hazard, active faults and seismic effect, and shoreline resource), 15 indicators, and 4 indicator levels. Based on the index system, the suitability of engineering construction in the Meishan Island is evaluated through GIS-based spatial analysis. The ecological red line control area in the Meishan Island is superimposed on the evaluation results to define the second-level control area as the poor area for engineering construction. The results indicate that the geological suitability of the Meishan Island is generally good, and 75.5% of the areas are well suitable or suitable for engineering construction, which can meet the demand of planning and construction land in the near future; the suitability of the near deep water shoreline areas are well suitable or suitable, and the undeveloped part (6.1 km) can effectively support the construction of the Meishan Island International Port City. The evaluation results can provide the foundation for exploitation and conservation of the Meishan Island. It also has theoretical significance for improving the evaluation index system of geological suitability. |
| Key words: island GIS engineering construction geological suitability ecology |
