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
海平面上升情景下辽东湾海岸侵蚀及影响评估
Assessment on sandy coast erosion under sea level rise scenarios along Liaodong Bay
投稿时间:2018-08-24  修订日期:2018-11-08
DOI:10.11840/j.issn.1001-6392.2019.01.005
中文关键词:  海平面上升  海岸侵蚀  平衡剖面  沙滩养护  辽东湾
英文关键词:sea level rise  coastal erosion  equilibrium profile  beach nourishment  Liaodong Bay
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)
作者单位E-mail
李文善 国家海洋信息中心天津 300171 lws_nmdis@163.com 
王慧 国家海洋信息中心天津 300171 wh_cherry@126.com 
张建立 国家海洋信息中心天津 300171  
左常圣 国家海洋信息中心天津 300171  
李欢 国家海洋信息中心天津 300171  
董军兴 国家海洋信息中心天津 300171  
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中文摘要:
      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原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原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。
英文摘要:
      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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