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首页> 外文期刊>Estuarine Coastal and Shelf Science >Bottom sediments affect Sonneratia mangrove forests in the prograding Mekong delta, Vietnam
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Bottom sediments affect Sonneratia mangrove forests in the prograding Mekong delta, Vietnam

机译：越南湄公河三角洲底部的沉积物影响了Sonneratia红树林

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摘要

Mangrove forests exert a strong influence on tropical deltas by trapping sediments discharged by rivers and by stabilizing the substrate with roots. Understanding the dynamics of sediments and morphology in and around mangrove forests is critical in order to assess the resilience of coastlines in a period of accelerated sea level rise. In this research, sediment samples, mangrove forest characteristics, and remote sensing data are used to investigate the relationship between mangroves and sediment substrate in the Mekong Delta, Vietnam. Our data show a significant correlation between percent of sand in bottom sediments and density of Sonneratia caseolaris forest. We ascribe this result to higher sediment disturbance in muddy areas that prevents seedling establishment. This correlation potentially allows the determination of substrate characteristics from vegetation attributes detected by remote sensing, despite the impenetrability of the forest canopy. The results presented herein suggest that a supply of sand from the river and hydrodynamic processes moving the sand ashore control the density of the Sonneratia mangrove forests at this location, promoting tidal flat colonization and canopy expansion. (C) 2016 Elsevier Ltd. All rights reserved.
机译：红树林通过截留河流排放的沉积物并用根来稳定基质，从而对热带三角洲产生了很大的影响。为了评估在海平面上升期间海岸线的复原力，了解红树林及其周围的沉积物和形态的动态至关重要。在这项研究中，沉积物样本，红树林特征和遥感数据被用于调查越南湄公河三角洲红树林与沉积物底物之间的关系。我们的数据表明，底部沉积物中的沙含量与Caseneris caseolaris森林密度之间存在显着相关性。我们将此结果归因于泥泞地区较高的泥沙扰动，阻止了幼苗的建立。尽管森林冠层无法穿透，但这种相关性潜在地允许根据通过遥感检测的植被属性确定基质特征。本文提供的结果表明，河流中的沙子供应和将沙子上岸移动的水动力过程控制了该位置的Sonneratia红树林的密度，促进了潮滩定居和冠层扩张。 （C）2016 Elsevier Ltd.保留所有权利。

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