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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Contrasting biogeomorphic processes affecting salt-marsh development of the Mokbaai, Texel, The Netherlands
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Contrasting biogeomorphic processes affecting salt-marsh development of the Mokbaai, Texel, The Netherlands

机译：对比生物地貌过程影响荷兰特克塞尔州莫克拜盐沼的发育

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摘要

The growth and decline of salt marshes may be the result of various interacting biogeomorphic processes and external factors. We present a case study of the Mokbaai on the Wadden island of Texel, where we assess the relative importance and the interaction between the biogeomorphic processes and various disturbances. We analysed changes in vegetation composition in the salt marsh and sedimentation-erosion patterns of the adjoining intertidal flat over a 30-year period. Vegetation underwent regression in the lower parts of the marsh, i.e. the low marsh zone changed into pioneer zone. Comparing elevation measurements from 2013 and 1983 showed that the adjoining intertidal flats eroded 15-25 cm. Maintenance dredging of a nearby harbour might negatively impact the sediment balance indicating that the regression of the lower parts of the salt marsh is caused by a lack of sediment. Simultaneously, a change in the local hydrology led to vegetation succession into high and brackish salt marsh, increased organic sediment production and consequently cliff formation. The results from this case study show that, even in a relatively small salt marsh, changes in external factors may set in motion a series of biogeomorphic processes and feedbacks, leading to locally contrasting trends in spatiotemporal development. (C) 2016 The Authors. Earth Surface Processes and Landforms Published by John Wiley & Sons Ltd.
机译：盐沼的生长和下降可能是各种相互作用的生物地貌过程和外部因素共同作用的结果。我们以特克塞尔（Wadden）瓦登岛（Wadden island）上的Mokbaai为例，评估相对重要性以及生物地貌过程与各种干扰之间的相互作用。我们分析了30年间盐沼中植被组成的变化以及毗邻潮间带的沉积-侵蚀模式。沼泽下部的植被经历了退化，即低沼泽地带变成了先锋地带。比较2013年和1983年的高程测量结果，发现相邻的潮间带侵蚀了15-25厘米。维护附近港口的疏dr工程可能会对沉积物平衡产生负面影响，这表明盐沼下部的退化是由缺乏沉积物引起的。同时，当地水文学的变化导致植被演替成高盐微咸盐沼，增加了有机沉积物的产量，从而形成了悬崖。该案例研究的结果表明，即使在盐沼相对较小的情况下，外部因素的变化也可能推动一系列生物地貌过程和反馈运动，从而导致时空发展的局部对比趋势。 （C）2016作者。约翰·威利父子有限公司（John Wiley＆Sons Ltd.）发布的地表过程和地貌

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