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Multifunctionality of agricultural channel vegetation : A review based on community functional parameters and properties to support ecosystem function modeling
Ecohydrology & Hydrobiology ( IF 2.7 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.ecohyd.2020.03.004
Gabrielle Rudi , Jean-Stéphane Bailly , Gilles Belaud , Cécile Dages , Philippe Lagacherie , Fabrice Vinatier

Vegetation living in agricultural channels (drainage ditches or irrigation channels) supports ecosystem functions such as water flow regulation; retention of sediments, agricultural pollutants and plant propagules; and bank strengthening. The review focuses on plant community functional parameters (aggregations of plant functional traits) and community properties that need to be considered to study the dynamics of these ecosystem functions, to support further modeling work on the functioning of these semiaquatic ecosystems. It also provides an up-to-date overview of the effects of channel management practices on vegetation, because these practices are a potential lever with which to drive plant community functional parameters and properties and, in turn, ecosystem functions. The review points out that the mean height, density, and flexibility of the plant cover, sometimes integrated in the “blockage factor”, mainly influence the average components of the water flow associated with the functions of water regulation, and retention of sediments and non-floating propagules. The density of plants, or area of the plant cover at the water surface, are generally used to explain floating propagule retention. The biomasses of living and dead vegetation are the properties used to assess the retention of agricultural pollutants. Root density and root length density, as well as tensile strength of the root system, are parameters generally associated with bank strengthening. Regarding the effects of channel management practices, this work highlights that research generally has focused on the resulting plant richness and diversity, but has not provided much information on associated plant community functional parameters and properties.



中文翻译:

农业河道植被的多功能性:基于群落功能参数和特性的综述,以支持生态系统功能建模

生活在农业渠道(排水沟或灌溉渠道)中的植被支持水流调节等生态系统功能;保留沉积物,农业污染物和植物繁殖体;和银行加强。审查的重点是植物群落功能参数(植物功能性状的集合)和群落特性,需要研究这些生态系统功能的动力学,以支持对这些半水生生态系统功能的进一步建模工作。它还提供了有关渠道管理实践对植被影响的最新概述,因为这些实践是驱动植物群落功能参数和特性以及进而驱动生态系统功能的潜在杠杆。该评论指出,平均高度,密度,植物覆盖的灵活性以及有时被整合到“阻塞因素”中的灵活性,主要影响与水调节功能相关的水流平均分量,以及沉积物和非漂浮性繁殖体的滞留。植物的密度或植物在水表面的覆盖面积通常用于解释漂浮的繁殖体滞留。活的和枯死的植被的生物量是用于评估农业污染物保留的特性。根系密度和根系长度密度以及根系的抗张强度通常是与堤岸加固相关的参数。关于渠道管理实践的影响,这项工作强调指出,研究通常集中在由此产生的植物丰富性和多样性上,

更新日期:2020-06-01
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