Tracking Changes to Urban Trees over 100 Years in Ithaca, NY, USA

Q2 Agricultural and Biological Sciences
F. Cowett, N. Bassuk, J. Grace, K. Vorstadt
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引用次数: 1

Abstract

Municipally managed urban trees provide environmental, social, and economic benefits. Continued provision of these benefits depends on the health and sustainability of these trees, which depends in turn on tree managers having the type of information usually found in a tree inventory. The city of Ithaca, New York, USA possesses 7 inventories of its street and park trees dating back to 1902. This paper uses the data contained in these inventories to assess the health and sustainability of the city’s street and park tree populations. Attention is given to the structure of these populations with emphasis placed on species and genera diversity and DBH size class distributions. Prior to 1987, the city’s municipal tree population was dominated by a few species, such as Norway maple (Acer platanoides), and genera such as maples (Acer) and elms (Ulmus), and the DBH size class distribution was skewed unsustainably towards older trees. From 1987 onwards, new plantings have significantly increased species and genera diversity, and the DBH size class distribution suggests sufficient younger trees to account for tree mortality and removals. These changes did not occur quickly due to the persistent legacy effect of past planting preferences and practices, but required a consistent effort by municipal tree managers over many years. As a result, based on an analysis of the most recent tree inventory conducted in 2019, the city’s street and park trees and the benefits they provide look to be on a more sustainable footing, although challenges still remain.
追踪美国纽约州伊萨卡市100年来城市树木的变化
市政管理的城市树木提供了环境、社会和经济效益。能否继续提供这些好处取决于这些树木的健康和可持续性,而这又取决于树木管理者是否拥有通常在树木清单中发现的信息类型。美国纽约伊萨卡市拥有7份街道和公园树木的清单,这些树木可以追溯到1902年。本文使用这些清单中的数据来评估城市街道和公园树木种群的健康和可持续性。对这些种群的结构进行了研究,重点研究了种属多样性和胸径大小类分布。在1987年之前,该市的市政树木种群以挪威枫(Acer platanoides)等少数物种以及枫(Acer)和榆树(Ulmus)等属为主,胸径大小类分布向老树倾斜,这是不可持续的。自1987年以来,新种植的树种和属的多样性显著增加,胸径大小分类分布表明有足够的幼树来解释树木的死亡和砍伐。由于过去种植偏好和做法的持续遗留影响,这些变化并没有迅速发生,而是需要市政树木管理者多年来的持续努力。因此,根据对2019年进行的最新树木清单的分析,该市的街道和公园树木及其提供的好处看起来更具可持续性,尽管挑战仍然存在。
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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