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Sedimentary processes in the Isla Cristina salt-marshes: Geomorphological changes of landscape

机译:克里斯蒂娜岛盐沼的沉积过程:景观的地貌变化

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摘要

The Isla Cristina salt marshes, located in the Southwest of Andalusia, constitute one of the most important nature reserves in the province of Huelva. In recent decades, as a consequence of climatic factors, and in addition to the loss of forest and agricultural formations adjacent to these wetlands, there has been a decline in biodiversity and productivity, resulting in a fragile and sensitive landscape. With the development of image processing techniques and of high-resolution satellite imagery, it is possible to obtain sufficiently precise patterns of erosion. In this paper, our new patented methodology is applied in order to measure the total volume of eroded soil in the Isla Cristina salt marshes. The various causes that give rise to this phenomenon are discussed, as well as the influence of intertidal processes. The results show how the erosion processes are related to both Land Use Change (LUC) and the morphometric characteristics of these tidal salt-marshes. The increased erosion levels are due to the influence of the Guadiana, Tinto, and Odiel rivers. (C) 2016 Elsevier Ltd. All rights reserved.
机译:位于安达卢西亚西南部的克里斯蒂娜岛盐沼,是韦尔瓦省最重要的自然保护区之一。在最近的几十年中,由于气候因素的影响,除了这些湿地附近的森林和农业结构的损失之外,生物多样性和生产力也在下降,导致了脆弱而敏感的景观。随着图像处理技术和高分辨率卫星图像的发展,可以获得足够精确的侵蚀图案。在本文中,我们应用了我们的新专利方法来测量克里斯蒂娜岛盐沼中侵蚀土壤的总量。讨论了引起这种现象的各种原因,以及潮间带过程的影响。结果表明,侵蚀过程与土地利用变化(LUC)和这些潮汐盐沼的形态特征如何相关。侵蚀程度的提高是由于瓜迪亚纳河,廷托河和奥迪尔河的影响。 (C)2016 Elsevier Ltd.保留所有权利。

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