| 海平面上升情景下辽东湾海岸侵蚀及影响评估 |
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| 引用本文： | 李文善,王慧,张建立,左常圣,李欢,董军兴.海平面上升情景下辽东湾海岸侵蚀及影响评估[J].海洋通报,2019(1):31-37. |
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| 作者姓名： | 李文善 王慧 张建立 左常圣 李欢 董军兴 |
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| 作者单位： | 国家海洋信息中心，天津 300171,国家海洋信息中心，天津 300171,国家海洋信息中心，天津 300171,国家海洋信息中心，天津 300171,国家海洋信息中心，天津 300171,国家海洋信息中心，天津 300171 |
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| 基金项目： | 亚洲区域合作专项资金项目（海平面上升背景下海岸带地区海洋灾害评估及应对）；国家重点研发计划项目（2017YFA0604904） |
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| 摘 要： | 基于海洋站潮位观测和中国沿海海平面变化影响调查等数据,分析了辽东湾沿岸海平面变化及海岸侵蚀状况,并定量评估了未来海平面上升情景下,辽东湾两岸典型沙质海岸侵蚀影响和沙滩养护投入。分析预测和评估结果表明:1980-2017年,辽东湾沿海海平面上升速率为3.0 mm/a,其中辽东湾东岸沿海海平面上升速率明显高于西岸。2009-2017年,辽宁营口白沙湾、绥中网户、绥中南山港和绥中团山气象观测场岸段后退和下蚀较为严重,部分岸段滩肩蚀退达2～3 m/a。预计2100年,辽东湾沿海海平面上升幅度在20～48 cm之间,由海平面上升引发的辽东湾海岸侵蚀土地损失为23.1 km2,土地经济损失为1410万元。为减缓海岸侵蚀,旅游沙滩和一般沙滩养护总投入分别为11亿元和46亿元,全岸段养护成本较高,应选取旅游沙滩等重点岸段进行养护。
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| 关 键 词： | 海平面上升 海岸侵蚀 平衡剖面 沙滩养护 辽东湾 |
| 收稿时间： | 2018/8/24 0:00:00 |
| 修稿时间： | 2018/11/8 0:00:00 |
Assessment on sandy coast erosion under sea level rise scenarios along Liaodong Bay |
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| LI Wen-shan,WANG Hui,ZHANG Jian-li,ZUO Chang-sheng,LI Huan and DONG Jun-xing.Assessment on sandy coast erosion under sea level rise scenarios along Liaodong Bay[J].Marine Science Bulletin,2019(1):31-37. |
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| Authors: | LI Wen-shan WANG Hui ZHANG Jian-li ZUO Chang-sheng LI Huan and DONG Jun-xing |
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| Institution: | National Marine Data and Information Service, Tianjin 300171, China,National Marine Data and Information Service, Tianjin 300171, China,National Marine Data and Information Service, Tianjin 300171, China,National Marine Data and Information Service, Tianjin 300171, China,National Marine Data and Information Service, Tianjin 300171, China and National Marine Data and Information Service, Tianjin 300171, China |
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| Abstract: | Based on tide gauge observation and sea level change influence investigation data, sea level change characteristics and coastal erosion status is analyzed. Meanwhile, potential sandy coast erosion and nourishment cost under sea level rise scenarios is assessed along Liaodong Bay. Results show that: sea level rise rate along Liaodong Bay coast was 3.0 mm/yr during 1980~2017, with higher rate on the east coast than that on the west coast. During 2009~2017, on the background of sea level rise, sandy beaches along Baisha coast and Suizhong coast in Liaodong Bay were eroded successively, part of which is retreated by 2~3 m/yr. Sea level along Liaodong Bay coast is predicted to rise by 20~48 cm in 2100. And sealevel-rise-induced dry land loss is predicted to reach 23.1 square kilometers along Liaodong Bay, with corresponding to land loss cost of 14.1 million Yuan. It is optimal to nourish key beaches since the cost is huge for whole coastline nourishment, where the cost for tourist and common beaches are 1.1 and 4.6 billion Yuan, respectively. |
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| Keywords: | sea level rise coastal erosion equilibrium profile beach nourishment Liaodong Bay |
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