Hydrological Barrier as a Cause of Salt Marsh Loss
Hydrological Barrier as a Cause of Salt Marsh Loss
复制标题
水文屏障是盐沼损失的原因
DOI：
10.2112/si77-009.1
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发表时间：
2017
影响因子：
--
通讯作者：
R. Feagin
中科院分区：
文献类型：
--
作者：
T. Huff;R. Feagin
摘要 赫夫，T.P. Feagin, R.A., 2017。水文屏障是盐沼损失的一个原因。在：马丁内斯，M.L.； Taramelli, A. 和 Silva, R.（编辑），《沿海恢复力：从不同角度探索众多挑战》。沿海研究杂志，特刊第 77 号，第 88-96 页。椰子溪（佛罗里达），ISSN 0749-0208。位于德克萨斯州木兰海滩沿岸的魔岭沼泽在过去几十年里迅速退化。这片沼泽对于野生动物和相关的休闲活动非常重要，例如在 Magic Ridge Sanctuary 观鸟以及在沼泽和邻近海湾钓鱼。在这项研究中，我们决定将重点放在贝壳碎片堆上，因为航空图像和当地知识表明这是水文干扰点。为了恢复这个生态系统，必须了解水文的变化，因此选择多阶段方法来挑选出影响沼泽的环境因素。土地覆盖分析与 1958 年开始至 2012 年结束的降水和海平面上升数据分析结合进行。获得了 2013 年 3 月至 2013 年 8 月的潮汐和盐度数据，以确定沼泽和海湾内的潮汐连通性和盐度条件。这些数据集表明，低沼泽面积的减少与海平面上升或降水无关。然而，潮汐数据显示，沼泽地长时间断开连接，导致沼泽地内的盐度增加。潮汐交换的缺乏表明存在潮汐渗透的阻塞。然而，从1958年到2012年期间，沼泽入口没有发生任何新的建设或人为改造。这表明一个单独的实体负责蓄水，该实体将是木兰湾中积累的沉积物和贝壳塞。
ABSTRACT Huff, T.P. and Feagin, R.A., 2017. Hydrological barrier as a cause of salt marsh loss. In: Martinez, M.L.; Taramelli, A., and Silva, R. (eds.), Coastal Resilience: Exploring the Many Challenges from Different Viewpoints. Journal of Coastal Research, Special Issue No. 77, pp. 88–96. Coconut Creek (Florida), ISSN 0749-0208. The Magic Ridge Marsh located along Magnolia Beach, Texas has rapidly degraded over the last few decades. This marsh is of great importance to wildlife and dependent recreational pursuits such as bird watching at the Magic Ridge Sanctuary and fishing in the marshes and adjacent bay. In this study, we decided to focus on the shell debris pile as aerial imagery, along with local knowledge, indicated that this was the point of hydrologic disturbance. In order to restore this ecosystem, the alterations to the hydrology had to be understood and thus the multi-stage approach was chosen to single out the environmental factors that influence the marsh. Land cover analyses were conducted in conjunction with analyses of precipitation and sea level rise data beginning in 1958 and ending in 2012. Tide and salinity data from March 2013 to August 2013 were obtained to determine tidal connectivity and salinity conditions within the marsh and bay. These data sets indicated that low marsh area decreased independently of sea level rise or precipitation. However, the tidal data showed the marsh was disconnected for extended periods of time resulting in increased salinity within the marsh. The lack of tidal exchange indicated that a blockage to tidal infiltration existed. However, during the period from 1958 to 2012, no new construction or man-made alteration to the inlets of the marsh occurred. This indicated that a separate entity was responsible for the impoundment, which would be a plug of sediment and shell that had accumulated in the Magnolia Inlet.