Assessment of air pollution removal by urban trees based on the i-Tree Eco Model: The case of Tehran, Iran

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Integrated Environmental Assessment and Management Pub Date : 2024-08-29 DOI:10.1002/ieam.4990

Reihaneh Rasoolzadeh, Naghmeh Mobarghaee Dinan, Hassan Esmaeilzadeh, Yousef Rashidi, Seyed Mohammad Moein Sadeghi

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Abstract

Air quality concerns have become increasingly serious in metropolises such as Tehran (Iran) in recent years. This study aims to assess the contribution of urban trees in Tehran toward mitigating air pollution and to evaluate the economic value of this ecosystem service using the i-Tree Eco model. To accomplish this objective, we utilized Tehran's original land use map, identifying five distinct land use categories: commercial and industrial, parks and urban forests, residential areas, roads and transportation, and urban services. Field data necessary for this analysis were collected from 316 designated plots, each with a radius of 11.3 m, and subsequently analyzed using the i-Tree Eco model. The locations of these plots were determined using the stratified sampling method. The results illustrate that Tehran's urban trees removed 1286.4 tons of pollutants in 2020. Specifically, the annual rates of air pollution removal were found to be 134.8 tons for CO; 299.7 tons for NO₂; 270.3 tons for O₃; 0.7 tons for PM_2.5; 489.4 tons for PM₁₀ (particulate matter with a diameter size between 2.5 and 10 µm); and 91.5 tons for SO₂, with an associated monetary value of US$1 536 619. However, despite this significant removal capacity, the impact remains relatively small compared with the total amount of pollution emitted in 2020, accounting for only 0.17%. This is attributed to the high emissions rate and low per capita green space in the city. These findings could serve as a foundation for future research and urban planning initiatives aimed at enhancing green spaces in urban areas, thereby promoting sustainable urban development. Integr Environ Assess Manag 2024;20:2142–2152. © 2024 SETAC

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基于 i-Tree 生态模型的城市树木清除空气污染评估：伊朗德黑兰案例。

近年来，德黑兰（伊朗）等大都市的空气质量问题日益严重。本研究旨在评估德黑兰城市树木对缓解空气污染的贡献，并使用 i-Tree Eco 模型评估这种生态系统服务的经济价值。为实现这一目标，我们利用德黑兰的原始土地利用地图，确定了五个不同的土地利用类别：商业和工业、公园和城市森林、住宅区、道路和交通以及城市服务。分析所需的实地数据来自 316 个指定地块，每个地块半径为 11.3 米，随后使用 i-Tree Eco 模型进行分析。这些地块的位置是采用分层抽样法确定的。结果表明，德黑兰的城市树木在 2020 年清除了 1286.4 吨污染物。具体而言，空气污染的年去除率为：一氧化碳 134.8 吨；二氧化氮 299.7 吨；臭氧 270.3 吨；PM2.5 0.7 吨；PM10（直径在 2.5 至 10 微米之间的颗粒物）489.4 吨；二氧化硫 91.5 吨，相关货币价值为 1536 619 美元。然而，尽管清除能力巨大，但与 2020 年的污染排放总量相比，其影响仍然相对较小，仅占 0.17%。这归因于城市的高排放率和低人均绿地面积。这些研究结果可作为未来研究和城市规划的基础，旨在加强城市地区的绿地建设，从而促进城市的可持续发展。Integr Environ Assess Manag 2024;00:1-11。© 2024 SETAC.

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来源期刊

Integrated Environmental Assessment and Management ENVIRONMENTAL SCIENCESTOXICOLOGY&nbs-TOXICOLOGY

CiteScore

5.90

自引率

6.50%

发文量

156

期刊介绍： Integrated Environmental Assessment and Management (IEAM) publishes the science underpinning environmental decision making and problem solving. Papers submitted to IEAM must link science and technical innovations to vexing regional or global environmental issues in one or more of the following core areas: Science-informed regulation, policy, and decision making Health and ecological risk and impact assessment Restoration and management of damaged ecosystems Sustaining ecosystems Managing large-scale environmental change Papers published in these broad fields of study are connected by an array of interdisciplinary engineering, management, and scientific themes, which collectively reflect the interconnectedness of the scientific, social, and environmental challenges facing our modern global society: Methods for environmental quality assessment; forecasting across a number of ecosystem uses and challenges (systems-based, cost-benefit, ecosystem services, etc.); measuring or predicting ecosystem change and adaptation Approaches that connect policy and management tools; harmonize national and international environmental regulation; merge human well-being with ecological management; develop and sustain the function of ecosystems; conceptualize, model and apply concepts of spatial and regional sustainability Assessment and management frameworks that incorporate conservation, life cycle, restoration, and sustainability; considerations for climate-induced adaptation, change and consequences, and vulnerability Environmental management applications using risk-based approaches; considerations for protecting and fostering biodiversity, as well as enhancement or protection of ecosystem services and resiliency.

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