A Tree Selection Survey of Tree City USA Designated Cities in the Pacific Northwest

Q2 Agricultural and Biological Sciences
Joshua Petter, P. Ries, A. D’Antonio, R. Contreras
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引用次数: 3

Abstract

As urban areas expand, there are a greater number of urban trees; however, development often leads to a reduction in urban trees in many areas. A reduction in the canopy volume of trees results in a reduction in the number of benefits. Additionally, urban trees can have additional stressors and must be more actively managed to maintain those services. Selecting tree species for the right site can lead to greater benefits and longer-lived trees. Increasing diversity of urban trees can help to mitigate some of the threats facing urban forests, such as invasive pests and climate change. We surveyed Tree City USA designated cities across Oregon and Washington to explore how they are selecting tree species for their municipalities. Responses were recorded for 79 out of 151 municipalities for a 52.3% response rate. Both open-ended questions and descriptive statistics were used to triangulate how managers are selecting tree species. Emergent themes in open-ended responses indicate a variety of justifications for tree species selection and the challenges of balancing those criteria. There is evidence to suggest that these municipalities are actively diversifying the urban forest; however, there are still 10 municipalities that reported ash (Fraxinus spp.) in their top 5 most frequently planted species in 2016. Many municipalities are still planting large quantities of maple (Acer spp.). Overplanting certain genera and species can lead to an increase in susceptibility to pests and pathogens. We recommend an increase in consideration for the diversification of tree species in urban areas.
美国西北太平洋指定城市的树木选择调查
随着城市面积的扩大,城市树木的数量也越来越多;然而,在许多地区,发展往往导致城市树木的减少。树木冠层体积的减少导致效益数量的减少。此外,城市树木可能有额外的压力源,必须更积极地管理以维持这些服务。在正确的地点选择树种可以带来更大的效益和更长的寿命。增加城市树木的多样性有助于减轻城市森林面临的一些威胁,如入侵性害虫和气候变化。我们调查了美国树城在俄勒冈州和华盛顿州的指定城市,探索他们是如何为他们的城市选择树种的。151个市镇中有79个市镇作出了答复,回复率为52.3%。开放式问题和描述性统计都被用来三角测量管理者是如何选择树种的。开放式回答中的紧急主题表明了树种选择的各种理由和平衡这些标准的挑战。有证据表明,这些城市正在积极地使城市森林多样化;然而,仍有10个城市在2016年最常种植的前5个物种中报告了白蜡树(白蜡树属)。许多城市仍在大量种植枫木(槭属)。过度种植某些属和种可能导致对害虫和病原体的易感性增加。我们建议增加对城市地区树种多样化的考虑。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Arboriculture and Urban Forestry
Arboriculture and Urban Forestry Agricultural and Biological Sciences-Forestry
CiteScore
1.70
自引率
0.00%
发文量
25
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