A Case Study: The Implementation of a Nature-Based Engineering Solution to Restore a Fallopia japonica-Dominated Brook Embankment
A Case Study: The Implementation of a Nature-Based Engineering Solution to Restore a Fallopia japonica-Dominated Brook Embankment
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案例研究：实施基于自然的工程解决方案来恢复以日本输卵管为主的布鲁克堤
DOI：
10.4236/ojf.2019.93009
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
H. Rauch
中科院分区：
文献类型：
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作者：
S. Hoerbinger;H. Rauch
考虑到河道上杂草的高度丰富、入侵预期的增加以及由此对河岸生态系统造成的负面影响，对创新办法和管理战略的需求很高。虽然杂草管理的主要目标是减少入侵植物物种的数量，但目前提出的基于自然的工程解决方案(NABS)的目标是重建本地河岸森林并恢复生态系统功能。Nabes的概念是通过频繁地移除虎杖的嫩枝来支持所实施的物种，直到本地植被通过根竞争和阴影压力来抑制虎杖。为了能够制定适应的虎尾草管理战略，必须提高关于海区生物量发展和最有效的维护间隔的知识。此外，更好地了解入侵物种和本地物种之间的相互作用也是至关重要的。在这项研究中，柳树灌木床垫(一种常见的控制河岸侵蚀的技术)与适当的管理策略相结合，在以费洛佩斯为主导的溪流堤坝上进行了有效性测试。由于其较高的生态幅度和良好的土壤生物工程特性，因此采用了紫云英这一物种。在堤防上部，日本对虾的出笋能力最强，而在靠近水域的部分，出笋能力最低。4月和5月的生物量生产最强。即使拔笋之间的时间间隔增加了，但枝条产量却急剧下降，并在8月份几乎停止。紫花蛇舌草与溪水接触的枝条发育良好。与第三次调查后生物产量迅速下降的日本沼虾相反，紫云英的盖度在整个植被过程中逐渐下降。
Considering the high abundance of knotweeds along river courses, the expected increase of invasion and the consequent negative impacts on riparian ecosystems, there is a high demand for innovative approaches and management strategies. While a primary aim of weed management is to reduce the population of an invasive plant species, the goal of the pre-sented nature-based engineering solution (NABES) is to reinstall native riparian forests and to restore ecosystem functioning. The concept of NABES is to support the implemented species by frequent removal of the knotweed shoots until the native vegetation represses the knotweeds by root competition and shadow pressure. In order to be able to develop adaptive knotweed management strategies, knowledge concerning sea-sonal biomass development and the most effective maintenance intervals must be improved. Additionally, greater understanding of the interaction between invasive and native species is essential. In the present study, the effectiveness of a willow brush mattress (a frequent technique for controlling riverbank erosion) in combination with adapted management strategies was tested on a Fallopia japonica-dominated brook embankment. Due to its high ecological amplitude and excellent soil bioengineering properties the species S. purpurea was used. In the upper part of the embankment, F. japonica shoot production was by far the strongest, while it was low in the sections next to the water. The strongest biomass production was observed in the months April and May. Even though the temporal interval between shoot removal was increased, shoot production decreased strongly and nearly ceased in August. Branches of S. purpurea with contact to the water of the brook showed good development. In contrast to F. japonica, which suffered a rapid decrease in biomass production after the third survey, the coverage ratio of S. purpurea decreased gradually over the vegetation period.