Effects of sea-level rise on barrier island groundwater system dynamics - ecohydrological implications
Effects of sea-level rise on barrier island groundwater system dynamics - ecohydrological implications
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DOI：
10.1002/eco.1442
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发表时间：
2014-06-01
期刊：
影响因子：
2.6
通讯作者：
Plant, Nathaniel G.
中科院分区：
文献类型：
--
作者：
Masterson, John P.;Fienen, Michael N.;Plant, Nathaniel G.
我们使用了一个数值模型来研究堰洲岛地下水系统对海平面上升60厘米的反应。研究发现，海平面每上升20 cm，就会导致地下水位深度、海水入侵的范围和深度发生重大变化，而这些变化是堰洲岛生态系统植被组合的建立、分布和演替以及生境适宜性的关键决定因素。在我们的模拟中，在水深较浅的地区（或薄渗透带），地下水位高度的增加导致地下水大面积淹没陆地表面，并使下面的淡水透镜体变薄。我们通过评估三个地点的变化证明了地下水对岛屿形态的相互依赖性。在长期变化的气候条件下，这种相互依赖可以对这些脆弱的沿海景观的生态系统组成产生深远的影响。2013年出版。这篇文章是美国政府的作品，在美国属于公有领域。
We used a numerical model to investigate how a barrier island groundwater system responds to increases of up to 60 cm in sea level. We found that a sea-level rise of 20 cm leads to substantial changes in the depth of the water table and the extent and depth of saltwater intrusion, which are key determinants in the establishment, distribution and succession of vegetation assemblages and habitat suitability in barrier islands ecosystems. In our simulations, increases in water-table height in areas with a shallow depth to water (or thin vadose zone) resulted in extensive groundwater inundation of land surface and a thinning of the underlying freshwater lens. We demonstrated the interdependence of the groundwater response to island morphology by evaluating changes at three sites. This interdependence can have a profound effect on ecosystem composition in these fragile coastal landscapes under long-term changing climatic conditions. Published 2013. This article is a U.S. Government work and is in the public domain in the USA.