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作者

Tijana Blanusa;Michael Garratt;Margaret Cathcart-James;Leigh Hunt;Ross W.F. Cameron

来源

URBAN FORESTRY & URBAN GREENING,Vol.44,Issue1,Article 126391

语言

英文

关键字

Biodiversity;Garden;Green infrastructure;Pollution;Rainfall mitigation;Well-being

作者单位

Science Department, Royal Horticultural Society, Garden Wisley, Woking GU23 6QB, United Kingdom;School of Agriculture, Policy and Development, University of Reading, RG6 6AR, United Kingdom;School of Biological Sciences, University of Reading, RG6 6AS, United Kingdom;Department of Landscape, University of Sheffield, S10 2TN, United Kingdom;Science Department, Royal Horticultural Society, Garden Wisley, Woking GU23 6QB, United Kingdom;School of Agriculture, Policy and Development, University of Reading, RG6 6AR, United Kingdom;School of Biological Sciences, University of Reading, RG6 6AS, United Kingdom;Department of Landscape, University of Sheffield, S10 2TN, United Kingdom

摘要

Urban hedges provide a number of important ecosystem services (ESs) including microclimate alteration, flood and pollution mitigation, and biodiversity provision, along with some disservices (DSs, e.g. invasiveness, allergenicity). However, hedge plant species differ in their capacity to promote different services, so it is important that the decision to plant hedges is evidence-based. The objectives of this study were thus to (i) to review the role of urban hedges within NW Europe; (ii) review the available literature detailing the ESs and DSs provided by different plant species and cultivars when used as hedge plants; (iii) identify where there is a lack of evidence for certain species or ESs/DSs; and (iv) develop a starting point for a discussion about appropriate species/cultivar selection to deliver multiple ESs, and avoid DSs.Many studies consider biodiversity and air quality ESs. There are significant gaps in the literature relating to rainfall mitigation/flood protection, but also CO2 sequestration, allergenicity and human psychological well-being impact of different species. Additionally, for noise and pollution mitigation studies, a range of methodologies and units are used, making comparisons between hedge species difficult/impossible.A number of common hedge species demonstrated high levels of ESs delivery, including Fagus sylvatica, Crataegus monogyna, Ilex aquifolium and Rosa rugosa. No species surveyed had an entirely negative association with ESs, and most provide at least some benefits in supporting ESs provision (e.g. Viburnum tinus, Laurus nobilis). We created a matrix, in a table form, linking plant species, key plant traits and ESs/DSs, which should make it easier for professionals to choose species best suited to provide multiple benefits, whilst minimising the drawbacks. Our review suggests that the relative contribution of urban hedges to ESs delivery may be under-valued currently, and calls for more research.