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The implications of climate change for coastal habitats in the Uists, Outer Hebrides

机译:气候变化对赫里德斯外围地区乌里斯沿海栖息地的影响

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摘要

The low-lying, relatively flat landscape of the western seaboard of the Uists has a particular vulnerability to climate change, especially to rising sea levels. Winter water tables are high, and a high proportion of the area is permanent open water and marsh. Any changes in aquatic relationships could pose serious problems for the Uist environment, where the closely inter-connected habitats are internationally recognised for their conservation value. The uncertainty of most aspects of climate change is imposed upon an existing level of high climatic variability in the Western Isles, greatly complicating local habitat and land use scenarios, but rising sea level, possibly the most threatening aspect of climate change, is a certainty. Rising sea level alone has the potential to raise water levels within the islands by progressively reducing the effectiveness of an ageing drainage network, not only raising water levels, but possibly also facilitating saline infiltration of the water table. This raises problems for habitats, species, and for land users, in islands where habitat processes and human interaction with the environment have always been particularly closely linked.
机译:Uists西部沿海地区的低洼相对平坦的景观特别容易受到气候变化的影响,尤其是在海平面上升的情况下。冬季地下水位很高,并且该地区的很大一部分是永久性的开放水域和沼泽。水生关系的任何变化都可能给Uist环境带来严重问题,在Uist环境中,紧密相连的栖息地因其保护价值而得到国际认可。气候变化大多数方面的不确定性是由于西岛现有的高度气候变化水平所致,这使当地的栖息地和土地使用情况大大复杂化,但是可以肯定的是,海平面上升可能是气候变化最危险的方面。单靠海平面上升,就有可能通过逐步降低老化的排水网络的有效性来提高岛屿内的水位,这不仅会提高水位,而且还可能促进盐分渗入地下水位。在栖息地过程和人类与环境之间的联系一直特别紧密的岛屿上,这给栖息地,物种和土地使用者带来了问题。

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  • 来源
    《Ocean & coastal management》 |2014年第6期|38-43|共6页
  • 作者

    Stewart Angus;

  • 作者单位

    Scottish Natural Heritage, Great Glen House, Leachkin Road, Inverness, Scotland IV3 8NW, United Kingdom;

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  • 正文语种 eng
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