首页> 外文期刊>International journal of ecohydrology and hydrobiology >Willow species vary in elevational occurrence and morphological characteristics on the tidal freshwater section of the Elbe estuary
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Willow species vary in elevational occurrence and morphological characteristics on the tidal freshwater section of the Elbe estuary

机译:柳树种类在易泻河口的潮汐淡水部分上发生了高度发生和形态特征

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Willows are regarded as globally occurring pioneer species providing ecosystem functions like bank stabilization and water purification, and serving as shelterbelts to prevent degradation of the environment. Some species are adapted to physical disturbance like wind, waves and currents due to their fast growth and vigorous resprouting capacity, and are widely used in short rotation coppices for biofuel production. Knowledge on willow river floodplain-forest ecology exists and Salix flooding tolerance is documented. However, information on floodplain-forests along river mouths where the estuarine tide affects willows is scarce. In the Anthropocene, tidal amplitudes are increasing in many estuaries due to the deepening of the navigational channel for harbour accessibility. With regard to tidal forest restoration, the Elbe estuary close to the Hamburg harbour served as a model system to study the effect of increasing tidal flooding on Salix alba and Salix viminalis. Our results show occurrence of both species at sites up to 60 cm below mean high water and their tolerance to twice daily flooding. Experimental findings on cuttings that were placed on flooding stairways at the tidal freshwater stretch showed the ability to resprout and grow up to more than 1 m below mean high water for Salix viminalis but not for Salix alba. Willows may maintain their habitat when tidal amplitudes are increasing but repeated physical flood damage prevents Salix alba in tidal floodplain-forests from rejuvenation. These forests may be restored along protected sites to ensure the ecosystem functions and services they provide in the estuarine environment. (C) 2018 European Regional Centre for Ecohydrology of the Polish Academy of Sciences. Published by Elsevier B.V. All rights reserved.
机译:Willows被视为全球性的先驱物种,提供生态系统功能,如银行稳定和水净化,并用作防护胶,以防止环境退化。由于它们的快速增长和剧烈的注入容量,一些物种适应风,波浪和电流等物理扰动,并且广泛用于生物燃料生产的短旋转轨道。关于柳树河洪泛区 - 森林生态学的知识存在,并记录了撒利克利洪水宽容。然而,关于河口河口的洪水森林的信息,在河口潮汐影响柳树的影响是稀缺的。在人体中,由于导航通道的深化通道,许多河口在许多河口中,潮汐幅度正在增加。关于潮汐森林恢复,易北河河口靠近汉堡港,担任模型系统,以研究潮汐泛滥对盐酱和撒利克里克斯·莫纳米纳的影响。我们的结果表明,在低于60厘米以下的场地,平均水平和耐受性两次每日洪水的耐受性。在潮汐淡水延伸的洪水楼梯上放置的扦插的实验结果表明,盐糊性器的平均高水下的重新涂布的能力并增长超过1米,但不适用于Salix Alba。当潮汐幅度增加时,柳树可能会保持栖息地,但重复的物理洪水损伤可防止洪水洪泛植物中的森林森林。这些森林可以沿着受保护的网站恢复,以确保它们在河口环境中提供的生态系统功能和服务。 (c)2018欧洲区域地区生态学科学中心的波兰科学院。 elsevier b.v出版。保留所有权利。

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