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Lost and preserved coastal landforms after urban growth. The case of Las Palmas de Gran Canaria city (Canary Islands, Spain)
Journal of Coastal Conservation ( IF 2.1 ) Pub Date : 2020-04-18 , DOI: 10.1007/s11852-020-00743-x
Eva Pérez-Hernández , Nicolás Ferrer-Valero , Luis Hernández-Calvento

Coastal geomorphological systems have undergone major changes in recent decades as a result of both natural and anthropic phenomena, with the growth of urban tourism having one of the biggest impacts. This has been the case of Las Palmas de Gran Canaria city (Canary Islands, Spain), which has expanded considerably since the late nineteenth century. The objective of this work is to identify the coastal landforms that existed in the city environment before 1879 and evaluate the extent to which they have been preserved or lost because of urban expansion on five dates (1879, 1954, 1966, 1981 and 2018). This evaluation was made possible through the integration, in a geographic information system, of information from historical and current documents, both cartographic and photographic, and from oral sources and field data. The results of the study reveal that 848.1 ha of the initial coastal landforms have been lost, with only 16.7% of the area they occupied remaining. The landforms that have experienced the most losses have been the aeolian sedimentary systems, which have totally disappeared since 1981. The least altered have been calcarenitic reefs, coastal active cliffs and sandy beaches. The land uses of the occupied coastal landforms, from highest to lowest, are: residential and tourist, road infrastructure, public spaces and green areas, port, facilities and industrial. The academic, social, educational and urban planning interests of this research are addressed in the discussion.Highlights• Identification of the coastal landforms that existed in LPGC city before 1879.• Evaluation of preserved vs. lost landforms areas because of urban expansion.• Loss of 848.1 ha (83.2%) of the initial coastal landforms.• Preservation of 170.2 ha (16.7%) of the original landforms.• Results of interest for academic, social, educational and urban planning.

中文翻译:

城市发展后失去和保留的沿海地貌。大加那利岛拉斯帕尔马斯市(西班牙加那利群岛)一案

近几十年来,由于自然现象和人类现象,沿海地貌系统发生了重大变化,其中城市旅游业的增长是最大的影响之一。大加那利岛的拉斯帕尔马斯市(西班牙加那利群岛)就是这种情况,自19世纪末以来,该市已大大扩展。这项工作的目的是确定1879年之前城市环境中存在的沿海地貌,并评估在五个日期(1879年,1954年,1966年,1981年和2018年)由于城市扩张而保存或丧失的沿海地貌的程度。通过在地理信息系统中集成来自历史和当前文件(制图和摄影)以及口头来源和现场数据的信息,可以进行此评估。研究结果表明,最初的沿海地貌已经消失了848.1公顷,仅剩下他们所占面积的16.7%。损失最大的地貌是风沙沉积系统,自1981年以来就完全消失了。变化最小的是钙质礁,沿海活动悬崖和沙滩。被占领的沿海地貌的土地使用从高到低依次为:住宅和旅游者,道路基础设施,公共场所和绿地,港口,设施和工业。讨论中讨论了这项研究的学术,社会,教育和城市规划兴趣。重点•识别1879年之前LPGC城市中存在的沿海地貌。•评价保护区 剩下的仅占16.7%。损失最大的地貌是风沙沉积系统,自1981年以来就完全消失了。变化最小的是钙质礁,沿海活动悬崖和沙滩。被占领的沿海地貌的土地利用从高到低依次为:住宅和旅游者,道路基础设施,公共场所和绿地,港口,设施和工业。讨论中讨论了这项研究的学术,社会,教育和城市规划兴趣。重点•识别1879年之前LPGC城市中存在的沿海地貌。•评价保护区 他们只占剩余面积的16.7%。损失最大的地貌是风沙沉积系统,自1981年以来就完全消失了。变化最小的是钙质礁,沿海活动悬崖和沙滩。被占领的沿海地貌的土地使用从高到低依次为:住宅和旅游者,道路基础设施,公共场所和绿地,港口,设施和工业。讨论中讨论了这项研究的学术,社会,教育和城市规划兴趣。重点•识别1879年之前LPGC城市中存在的沿海地貌。•评价保护区 自1981年以来就完全消失了。变化最小的是钙质礁,沿海活动悬崖和沙滩。被占领的沿海地貌的土地使用从高到低依次为:住宅和旅游者,道路基础设施,公共场所和绿地,港口,设施和工业。讨论中讨论了这项研究的学术,社会,教育和城市规划兴趣。重点•识别1879年之前LPGC城市中存在的沿海地貌。•评价保护区 自1981年以来就完全消失了。变化最小的是钙质礁,沿海活动悬崖和沙滩。被占领的沿海地貌的土地利用从高到低依次为:住宅和旅游者,道路基础设施,公共场所和绿地,港口,设施和工业。讨论中讨论了这项研究的学术,社会,教育和城市规划兴趣。重点•识别1879年之前LPGC城市中存在的沿海地貌。•评价保护区因城市扩张丧失的地貌区域相比。•最初的沿海地貌损失了848.1公顷(83.2%)。•保留了原始地貌的170.2公顷(16.7%)。•学术,社会,教育和科学方面的关注结果城市规划。
更新日期:2020-04-18
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