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首页> 外文期刊>Ocean & coastal management >Morphological changes following vegetation removal and foredune re-profiling at Woonona Beach, New South Wales, Australia
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Morphological changes following vegetation removal and foredune re-profiling at Woonona Beach, New South Wales, Australia

机译：在澳大利亚新南威尔士州Woonona海滩进行植被去除和远志重新定型后的形态变化

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摘要

Dunes are important for coastal protection, but their presence can, sometimes be seen as conflicting with the recreational use of the coastline. In June 2014, in response to community concern, Wollongong City Council, a local government authority in southeast Australia, took the unconventional step of removing vegetation and re-profiling the foredune in a section of Woonona Beach to improve beach width and sightlines. A series of cross-sections in the re-profiled and adjacent unmodified areas have been surveyed monthly since July 2013, to help determine the impact of the intervention on beach and foredune topography. These show that immediately after re-profiling, considerable additional lower beach width was gained, and there was little accretion on the foredune that had been re-profiled. However, after 8 months, the importance of the re-profiling in maintaining lower beach width is less clear, and an incipient foredune is emerging at the new vegetation line, with about half the volume of sand removed during re-profiling re-deposited in this area. After 21 months, lower beach width gain from re-profiling had disappeared, and the volume of sand deposited on the new incipient foredune is more than the volume removed by the re-profiling. The results are discussed in terms of whether the short-term outcomes achieved by the re-profiling are being compromised, and what on-going management will be required to maintain these over the longer term. This study highlights the challenges facing coastal managers trying to balance conflicting community objectives at beaches backed by vegetated dunes. (C) 2017 Elsevier Ltd. All rights reserved.
机译：沙丘对海岸保护很重要，但有时将其视为与海岸线的休闲用途相抵触。 2014年6月，为了回应社区的关注，澳大利亚东南部地方政府当局卧龙岗市议会采取了非常规的措施，在Woonona海滩的一部分地区清除植被并重新划分了鱼鳞，以改善海滩的宽度和视线。自2013年7月以来，每月进行一次重新轮廓和相邻未修改区域的一系列横截面调查，以帮助确定该干预措施对海滩和前陆地形的影响。这些结果表明，在重新剖析后，立即获得了可观的额外的较低的海滩宽度，并且在重新剖析的前额上几乎没有积聚。然而，在8个月后，重新成型在保持海滩较低宽度方面的重要性并不清楚，新的植被线也开始出现先兆，在重新成型期间将约一半的砂土重新沉积在这片区域。 21个月后，重新成型的较低海滩宽度增益消失了，沉积在新的前陆上的沙子体积大于重新成型所去除的体积。根据重新分析所取得的短期结果是否受到损害以及长期维持这些结果将需要哪些持续管理来讨论结果。这项研究突显了沿海管理者在平衡由沙丘支撑的海滩上冲突的社区目标时面临的挑战。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Ocean & coastal management》 |2017年第9期|15-25|共11页
  • 作者

    Gangaiya Philomena; Beardsmore Aimee; Miskiewicz Tony;

  • 作者单位

    Wollongong City Council, Locked Bag 8821, Wollongong Dc, NSW 2500, Australia|Univ Wollongong, Sch Earth & Environm Sci, Wollongong, NSW 2522, Australia;

    Wollongong City Council, Locked Bag 8821, Wollongong Dc, NSW 2500, Australia|Off Environm & Heritage, POB 513, Wollongong, NSW 2520, Australia;

    Wollongong City Council, Locked Bag 8821, Wollongong Dc, NSW 2500, Australia|Univ New South Wales, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Foredune; Dune vegetation; Beach change; Beach amenity;

    机译：福特山;沙丘植被;海滩变化;海滩设施;

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