摘要
受近年日益加剧的人为活动和频发的极端天气影响,全球范围内的砂质海岸正面临严重的侵蚀退化,如何有效解决生境退化问题、提升海岸带韧性、实现生态环境改善和自然灾害治理的复合功能是诸多地区密切关注的重要议题。随着以往海岸整治方式负面作用日益显著以及传统硬质工程的政策限制,探索基于海岸资源可持续管理的自然解决方案(NBS)应运而生。鉴于此,本文以海口西海岸蚀退明显的4段砂质海岸为例,通过数值模拟技术,运用NBS策略,探析夷直型和岬湾型沙滩的仿自然设计形式,营造潜礁岬头和人工沙丘,构建柔性沙滩和硬质护岸相结合的综合防护体系,结合区域海滩沉积物管理的创新思路,提出循环补沙+周期性养护的沙滩管理模式,以促进受损海岸生态环境的自然恢复。
Affected by increasing human activities and frequent extreme weather events in recent years, sandy coasts around the world are facing severe erosion and degradation. Effectively solving the problem of habitat degradation, improving the resilience of coastal zones, and fulfilling the dual functions of ecological environment improvement and natural disaster management are important issues that many regions pay close attention to. The increasingly evident negative effects of previous coastal remediation methods and the policy restrictions on traditional hard engineering give rise to the exploration of nature-based solutions(NBS)featuring sustainable management of coastal resources. In response, this paper takes four stretches of sandy coasts with obvious erosion and degradation on the west coast of Haikou in China as an example. Resorting to the numerical simulation technology and the NBS policy, the paper explores the bionic design forms of straight and cape-shaped beaches and builds submerged reef and cape head sections and artificial dunes to construct a comprehensive protection system that combines flexible beaches with hard revetments. Innovative ideas for regional beach sediment management are drawn on to propose a beach management model of cyclic sand supplementation & periodic maintenance to promote the natural recovery of the ecological environments on damaged coasts.
作者
冯哲
邵铁政
李元青
周剑
FENG Zhe;SHAO Tie-zheng;LI Yuan-qing;ZHOU Jian(CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,China)
出处
《水运工程》
北大核心
2022年第S01期13-20,30,共9页
Port & Waterway Engineering
关键词
NBS
海滩修复工程
沉积物管理
nature-based solution
beach restoration project
sediment management
作者简介
冯哲(1990-),男,硕士,工程师,从事海岸动力地貌及生态修复研究工作。
