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首页> 外文期刊>Ocean & coastal management >Utilizing the physiological adaptation mechanisms of coastal plants for vegetative restoration of barrier islands
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Utilizing the physiological adaptation mechanisms of coastal plants for vegetative restoration of barrier islands

机译：利用沿海植物的生理适应机制对障碍岛进行营养恢复

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Since 1932, there has been increased coastal erosion accounting for over one million acres of land loss along the Louisiana coastline resulting in a major economic loss in the United States economy. The objective of this research was to determine the physiological and morphological adaptations of barrier island vegetation to better plan future planting and restoration efforts. Plant growth, biomass, and nutrient load changes were evaluated for the purpose of barrier island restoration. Plants flooded for eight weeks accumulated greater biomass than the unflooded groups showing adaptability to hypoxia and flooding stress. Tissue analysis of coastal edge plants resulted in no nutrient content differences, demonstrating their ability to exclude excessive quantities of Fe and Mn uptake in hypoxic conditions. Arenchyma cells were abundant in black mangrove (Avicinia germinans) and S. altemiflora flooded roots transporting oxygen to the hypoxic root zone. Beach plants were found to help increase sand elevation, creating increased contour heights. Additionally, rooting strength research indicated greater soil stabilization after eight weeks of seashore paspalum establishment on simulated beach plots. Coastal edge plants were found to be suitable for the uptake of high nutrient loads from water. Carefully selecting barrier island restoration plant populations based on their adaptive mechanisms could help improve the success of barrier island restoration efforts.
机译：自1932年以来，海岸侵蚀加剧，导致路易斯安那州海岸线上的土地流失超过一百万英亩，导致美国经济遭受重大经济损失。这项研究的目的是确定屏障岛植被的生理和形态适应性，以更好地计划未来的种植和恢复工作。评估植物生长，生物量和养分负荷变化以恢复屏障岛。淹水八周的植物比未淹水的植物积累了更多的生物量，显示了对缺氧和淹水胁迫的适应性。沿海边缘植物的组织分析未发现营养成分差异，这表明它们有能力排除低氧条件下过量摄入的铁和锰。黑红树林（Avicinia Germinans）和altemiflora淹没的根中都有大量的Arenchyma细胞，将氧气输送到低氧根区。人们发现沙滩植物有助于增加沙土海拔，增加轮廓高度。此外，生根强度研究表明，在模拟海滩地块上建立海滨雀pa八周后，土壤稳定性更高。发现沿海边缘植物适合从水中吸收高养分。根据其适应机制仔细选择屏障岛恢复植物种群可以帮助提高屏障岛修复工作的成功率。

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