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| 近30年威海市海岸线时空变化及其驱动力 |
| 孙晓林,吴孟泉,田佳慧,陆嘉琪,于涵,宋府霖,梁峰 |
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| (鲁东大学资源与环境工程学院,山东 烟台 264025;兰州理工大学经济管理学院,甘肃 兰州 730000;烟台市海洋环境监测预报中心,山东 烟台 264003) |
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| 摘要: |
| 海岸线对沿海地区生态环境、潮间带的滩涂资源量以及湿地生态系统等都具有重要的影响。基于遥感与 GIS技术，提取并矢量化了山东省威海地区1988、1994、1999、2007、2014年和2017 年 6个时期的海岸线，对其 30 a来的时空变化及其驱动力进行了研究。结果表明: 威海市海岸线的变化主要体现在不同岸线类型长度所占比例的改变；在总长度上，威海市海岸线呈现出持续增长的趋势，30 a间增加了74.7 km，增长速率为2.49 km/a；在岸线类型方面，该地区以人工岸线为主，其中养殖围堤的比重最大，占岸线总长度的39.4%。研究认为，威海市海岸线的变化主要受人为因素的影响，这些因素会引起海岸带多种资源和生态过程的改变，会直接影响沿海人们的生存和发展。 |
| 关键词: 海岸带资源及其开发 海岸线 遥感 时空变化 驱动力 威海 |
| DOI：10.3969/J.ISSN.2095-4972.2019.02.007 |
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| 基金项目:山东省自然科学基金资助项目（ZR2019MD041，ZR2015DM015）；烟台市科技项目资助项目（2013ZH094）；国家自然科学基金资助项目（41471223） |
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| Driving forces and spatio-temporal variation of Weihai coastline in recent 30 years |
| SUN Xiao-lin,WU Meng-quan,TIAN Jia-hui,LU Jia-qi,YU Han,SONG Fu-lin,LIANG Feng |
| (College of Resources and Environmental Engineering, Ludong University, Yantai 264025, China;Technology School of Economics and Management,Lanzhou University,Lanzhou 730000,China;Center of Yantai Marine Environment Monitoring and Forecasting, Yantai 264003,China) |
| Abstract: |
| The coastline has significant influence on the ecological environment, tidal flats of intertidal zone, wetland ecological system in the coastal areas and so on. Based on the remote sensing and the GIS technology, the coastline data of Weihai, Shangdong Province, is extracted and vector quantized in 6 periods of 1988, 1994, 1999, 2007, 2014 and 2017 in order to study the driving forces and spatiotemporal variation of Weihai coastline in recent 30 years.Thus, we draw the following conclusions: the coastline changes in Weihai are mainly the reflections of the proportion of the length of different shoreline types. In terms of total length, the coastline shows a trend of continuous growth, increasing by 74.7 km at a rate of 2.49 km/a in 30 years. In terms of shoreline types, the area is dominated with artificial shoreline by dams of aquaculture activities. It accounts for 39.4% of the total length of the shoreline. The spatial and temporal changes of coastlines and the driving forces analysis show that the changes are driven mainly by human factors which may change the resources and ecological processes of the coast and affect directly the conditions of survival and development of the local community. |
| Key words: coastal resources and exploitation coastline remote sensing spatio temporal change driving forces Weihai |