抵抗还是撤退?意大利的海滩侵蚀与气候危机:情景、影响和挑战

IF 4 2区 地球科学 Q1 GEOGRAPHY
Filippo Celata, Eleonora Gioia
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引用次数: 0

摘要

人类活动对海滩造成的持续侵蚀,加上海平面上升的影响,预计将对沙质海岸线产生破坏性影响。本文在综合各种预测和数据集的基础上,确定了受到威胁的意大利海滩及其区域分布,研究了对依赖海滩的活动和海岸管理的影响。因此,到 2050 年,预计意大利 70% 的海滩将受到侵蚀的影响。到 2050 年,五分之一的现有海滩表面可能几乎完全被淹没,到本世纪末,45% 的海滩将被淹没,撒丁岛、坎帕尼亚、拉齐奥和阿普利亚地区可能失去一半以上的海滩。虽然海滩在受到侵蚀时会自然地向陆地迁移,而且这种迁移可以通过有管理的后退措施来实现,但由于后方海滩日益城市化,这些解决方案受到了严重限制。意大利的适应措施几乎完全以海岸保护为基础,这加剧了整体侵蚀,破坏了海滩的自然恢复能力。需要对海岸管理制度进行变革性的、基于自然的重新思考,以避免大片沙质海岸线的人为化,以及对沿海居民点和经济的日益严重的威胁。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Resist or retreat? Beach erosion and the climate crisis in Italy: Scenarios, impacts and challenges

Resist or retreat? Beach erosion and the climate crisis in Italy: Scenarios, impacts and challenges

The ongoing erosion of beaches due to anthropic pressure, together with the effects of sea level rise are expected to have devastating effects on sandy coastlines. This paper identifies the Italian beaches under threat and their regional distribution, examining the implications for beach-dependent activities and coastal management, based on the integration of various projections and datasets. As a result, by the year 2050 erosion is expected to affect 70% of Italian beaches. One-fifth of the current beaches' surface is likely to be almost completely submerged by 2050 and 45% by the end of the century, with the regions of Sardinia, Campania, Lazio, and Apulia likely to lose more than half of their equipped beaches. Although beaches naturally tend to migrate landward when subjected to erosion, and such shift can be favoured by managed retreat measures, these solutions are severely limited by the increasing urbanisation of back beaches. Adaptation in Italy is almost exclusively based on coastal protections, which exacerbate overall erosion and undermine beaches’ natural resilience. A transformative and nature-based rethinking of the coastal management regime is needed to avoid the artificialization of a huge portion of the sandy coastline and increasing threats to coastal settlements and economies.

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来源期刊
Applied Geography
Applied Geography GEOGRAPHY-
CiteScore
8.00
自引率
2.00%
发文量
134
期刊介绍: Applied Geography is a journal devoted to the publication of research which utilizes geographic approaches (human, physical, nature-society and GIScience) to resolve human problems that have a spatial dimension. These problems may be related to the assessment, management and allocation of the world physical and/or human resources. The underlying rationale of the journal is that only through a clear understanding of the relevant societal, physical, and coupled natural-humans systems can we resolve such problems. Papers are invited on any theme involving the application of geographical theory and methodology in the resolution of human problems.
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