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首页> 外文期刊>Estuarine Coastal and Shelf Science >Development of a coastal dune vulnerability index for Mediterranean ecosystems: A useful tool for coastal managers?
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Development of a coastal dune vulnerability index for Mediterranean ecosystems: A useful tool for coastal managers?

机译：制定地中海生态系统沿海沙丘脆弱性指数：海岸管理者的有用工具？

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摘要

Coastal dune ecosystems have been severely degraded as a result of excessive natural resource exploitation, urbanisation, industrial growth, and worldwide tourism. Coastal management often requires the use of vulnerability indices to facilitate the decision-making process. The main objective of this study was to develop a Mediterranean dune vulnerability index (MDVI) for sandy coasts, starting from the existing dune vulnerability index (DVI) proposed by Garcia-Mora et al. (2001) related to the oceanic coasts. Given that the Mediterranean sandy coasts are quite different from the Atlantic coasts, several adjustments and integrations were introduced. Our proposed index is based on the following five main group of factors: geomorphological conditions of the dune systems (GCD), marine influence (MI), aeolian effect (AE), vegetation condition (VC), and human effect (HE), for a total of 51 variables derived (and adapted) from the bibliography or proposed for the first time in this study. For each coastal site, a total vulnerability index, ranging from 0 (very low vulnerability) to I (very high vulnerability), was calculated as the unweighted average of the five partial vulnerability indices. Index computation was applied to 23 coastal dune systems of two different contexts in Italy, i.e. peninsular and continental island territories representative of the W-Mediterranean Basin, in order to compare the dune systems with different geomorphology, shoreline dynamics, and human pressure. In particular, our research addressed the following two questions: (1) Which variables are the most critical for the Italian coastal systems? (2) How can the coastal dune vulnerability index be used to develop appropriate strategies of conservation and management for these ecosystems? Cluster analysis and non-metric multidimensional scaling separated the peninsular from the insular sites, both of which were characterised by low to moderate values of vulnerability (0.32 < MDVI < 0.49). The most critical factors for the coastal systems examined in this study were marine negative influence, low stabilising ability of vegetation, and human disturbance. Hence, coastal managers are encouraged to plan specific management actions such as protection of foredunes from marine factors (particularly erosion), to promote dune formation with the reintroduction of native dune builder species and to minimise human pressure where vulnerability depends on these variables. (C) 2016 Elsevier Ltd. All rights reserved.
机译：由于过度开发自然资源，城市化，工业增长和全球旅游业，沿海沙丘生态系统已严重退化。沿海管理部门通常需要使用脆弱性指数来促进决策过程。这项研究的主要目的是从Garcia-Mora等人提出的现有沙丘脆弱性指数（DVI）开始，为沙质海岸开发地中海沙丘脆弱性指数（MDVI）。 （2001年）与大洋沿岸有关。鉴于地中海沙质海岸与大西洋海岸截然不同，因此进行了一些调整和整合。我们建议的指标基于以下五个主要因素组：沙丘系统的地貌条件（GCD），海洋影响（MI），风沙效应（AE），植被状况（VC）和人为影响（HE）总共51个变量是从参考书目中导出（或改编）的，或者是本研究中首次提出的。对于每个沿海站点，总的脆弱性指数从0（极低脆弱性）到I（极高脆弱性）进行计算，作为五个局部脆弱性指数的未加权平均值。为了比较具有不同地貌，海岸线动态和人为压力的沙丘系统，将指数计算应用于意大利两种不同情况的23个沿海沙丘系统，即代表W-地中海盆地的半岛和大陆岛领土。特别是，我们的研究解决了以下两个问题：（1）哪些变量对意大利沿海系统最为关键？ （2）如何利用沿海沙丘脆弱性指数来为这些生态系统制定适当的养护和管理策略？聚类分析和非度量多维标度将半岛与岛状站点分隔开，这两个站点的特征都是脆弱性的中低值（0.32

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2017年第5期|84-95|共12页
  • 作者

    Ciccarelli D.; Pinna M. S.; Alquini F.; Cogoni D.; Ruocco M.; Bacchetta G.; Sarti G.; Fenu G.;

  • 作者单位

    Univ Pisa, Dipartimento Biol, Via Luca Ghini 13, I-56126 Pisa, Italy;

    Univ Cagliari, Dipartimento Sci Vita & Ambiente, Ctr Conservaz Biodiversita, Viale St Ignazio Laconi 11-13, I-09123 Cagliari, Italy;

    Univ Pisa, Dipartimento Sci Terra, Via Santa Maria 53, I-56126 Pisa, Italy;

    Univ Cagliari, Dipartimento Sci Vita & Ambiente, Ctr Conservaz Biodiversita, Viale St Ignazio Laconi 11-13, I-09123 Cagliari, Italy;

    Univ Modena & Reggio Emilia, Dipartimento Sci Vita, Via Campi 213-d, I-41125 Modena, Italy;

    Univ Cagliari, Dipartimento Sci Vita & Ambiente, Ctr Conservaz Biodiversita, Viale St Ignazio Laconi 11-13, I-09123 Cagliari, Italy|Univ Cagliari, HBK, Viale St Ignazio Laconi 9-11, I-09123 Cagliari, Italy;

    Univ Pisa, Dipartimento Sci Terra, Via Santa Maria 53, I-56126 Pisa, Italy;

    Univ Cagliari, Dipartimento Sci Vita & Ambiente, Ctr Conservaz Biodiversita, Viale St Ignazio Laconi 11-13, I-09123 Cagliari, Italy|Sapienza Univ Roma, Dipartimento Biol Ambientale, Ple A Moro 5, I-00185 Rome, Italy;

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  • 正文语种 eng
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  • 关键词

    Coastal management; Coastal vegetation; Mediterranean dune vulnerability index (MDVI); NMDS; Plant functional types (PFTs);

    机译：沿海管理;沿海植被;地中海沙丘脆弱性指数（MDVI）;NMDS;植物功能类型（PFT）;

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