当前位置: X-MOL 学术J. Hydro-environ. Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Linking plant strategies to environmental processes in floodplains of lowland rivers
Journal of Hydro-environment Research ( IF 2.8 ) Pub Date : 2020-01-22 , DOI: 10.1016/j.jher.2020.01.002
Valesca Harezlak , Denie C.M. Augustijn , Gertjan W. Geerling , Gerben J. van Geest , Rob S.E.W. Leuven

The successful use of relations between environmental processes (filters) and either plant traits or plant strategies has boosted ecological research. Various studies identified environmental filters shaping plant species composition. However, this approach is scarce in research on vegetation succession in floodplains of heavily modified rivers. Especially in these ecosystems, mechanistic knowledge is needed to understand ecological effects of human interventions and to develop strategies for floodplain rehabilitation. The aim of this study is therefore to explore whether the application of the filter-plant strategy concept reveals a better understanding of environmental drivers for vegetation succession than analyses of just species composition. And if so, could this information support floodplain management? Ten plots (1 m2) with herbaceous vegetation were studied in each of three floodplains along two distributaries of the Rhine River in the Netherlands. For each plot, environmental filters for establishment of plant species were measured (e.g. soil moisture, soil nutrient content and grain size). Data on species composition of vegetation and plant strategies, like life and growth form, were collected. The data were analyzed using the combination of fuzzy clustering and multiple regression trees. Both species composition and plant strategy composition reflected a soil moisture and nutrient gradient, but the filter-plant strategy analyses also revealed the importance of disturbances (excavation and summer inundation) for shaping vegetation composition. The plant strategy composition supplemented species surveys and benefitted understanding species assembling by anthropogenic disturbances. Moreover, application of the filter-plant strategy concept can provide insight in functional diversity, biomass and hydraulic roughness of vegetation and may support decision making on the optimization of floodplain functions.



中文翻译:

将植物策略与低地河流洪泛区的环境过程联系起来

环境过程(过滤器)与植物性状或植物策略之间关系的成功利用促进了生态学研究。各种研究确定了环境过滤器可以塑造植物物种的组成。但是,这种方法在大量修改过的河流漫滩的植被演替研究中很少。特别是在这些生态系统中,需要机械知识来了解人类干预的生态影响并制定洪泛区复原策略。因此,本研究的目的是探索应用过滤植物策略的概念是否比仅仅进行物种组成的分析更好地理解了植被演替的环境驱动因素。如果是这样,此信息是否可以支持洪泛区管理?十个地块(1 m2)在荷兰莱茵河的两个支流的三个洪泛区中,每个都研究了草本植物。对于每个样地,都测量了用于建立植物物种的环境过滤器(例如,土壤湿度,土壤养分含量和粒度)。收集了有关植被的物种组成和植物策略(如生命和生长形式)的数据。使用模糊聚类和多元回归树的组合来分析数据。物种组成和植物策略组成都反映了土壤水分和养分梯度,但是过滤器-植物策略分析也揭示了干扰(开挖和夏季淹没)对塑造植被组成的重要性。植物策略组成补充了物种调查,并有助于了解人为干扰造成的物种聚集。此外,滤池策略概念的应用可以提供植被功能多样性,生物量和水力粗糙度的见解,并可以支持洪泛区功能优化的决策。

更新日期:2020-01-22
down
wechat
bug