Vertical evaluation of air quality improvement by urban forest using unmanned aerial vehicles

Urban forest is considered an effective strategy for mitigating urban air pollution via deposition, absorption and dispersion processes. However, previous studies had focused mainly on the deposition effect or removal capacity near the ground, while the net effect of the urban forest on air quality...

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Main Authors: Chunping Miao, Aiwei Cui, Zaiping Xiong, Yuanman Hu, Wei Chen, Xingyuan He
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-11-01
Series:Frontiers in Ecology and Evolution
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fevo.2022.1045937/full
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author Chunping Miao
Chunping Miao
Aiwei Cui
Zaiping Xiong
Yuanman Hu
Wei Chen
Wei Chen
Wei Chen
Xingyuan He
Xingyuan He
Xingyuan He
author_facet Chunping Miao
Chunping Miao
Aiwei Cui
Zaiping Xiong
Yuanman Hu
Wei Chen
Wei Chen
Wei Chen
Xingyuan He
Xingyuan He
Xingyuan He
author_sort Chunping Miao
collection DOAJ
description Urban forest is considered an effective strategy for mitigating urban air pollution via deposition, absorption and dispersion processes. However, previous studies had focused mainly on the deposition effect or removal capacity near the ground, while the net effect of the urban forest on air quality is rarely evaluated in the vertical dimension. In this study, PM2.5 (particulate matter with diameter less than 2.5), PM10 (particulate matter with diameter less than 10 μm), carbon monoxide (CO), sulfur dioxide (SO2), nitrogen dioxide (NO2), and ozone (O3) concentrations, air temperature, relative humidity, and atmospheric pressure at 0, 2.5, 5, 10, 15, 20, 30, 40, 60, 80, and 100 m in urban forest, street, and community areas were collected by unmanned aerial vehicles (UAVs) equipped with Sniffer4D V2 on overcast and sunny days. The PM, CO, NO2, and O3 concentrations increased with height below 20 m and then slightly decreased with height on an overcast day, whereas SO2 concentrations decreased with height within 20 m. The urban forest increased PM concentrations in the morning of an overcast day, whereas it decreased PM concentrations in the afternoon of the overcast day. The forest obstructed PM dispersion from the canopy when PM concentrations grew lower in the morning, but it hindered PM from deposition when PM concentrations grew higher in the afternoon.
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spelling doaj.art-cead56e677ba4530b6ec81164867e2152022-12-22T03:39:20ZengFrontiers Media S.A.Frontiers in Ecology and Evolution2296-701X2022-11-011010.3389/fevo.2022.10459371045937Vertical evaluation of air quality improvement by urban forest using unmanned aerial vehiclesChunping Miao0Chunping Miao1Aiwei Cui2Zaiping Xiong3Yuanman Hu4Wei Chen5Wei Chen6Wei Chen7Xingyuan He8Xingyuan He9Xingyuan He10CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaShenyang Arboretum, Chinese Academy of Sciences, Shenyang, ChinaCAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaCAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaCAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaCAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaShenyang Arboretum, Chinese Academy of Sciences, Shenyang, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaCAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaShenyang Arboretum, Chinese Academy of Sciences, Shenyang, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaUrban forest is considered an effective strategy for mitigating urban air pollution via deposition, absorption and dispersion processes. However, previous studies had focused mainly on the deposition effect or removal capacity near the ground, while the net effect of the urban forest on air quality is rarely evaluated in the vertical dimension. In this study, PM2.5 (particulate matter with diameter less than 2.5), PM10 (particulate matter with diameter less than 10 μm), carbon monoxide (CO), sulfur dioxide (SO2), nitrogen dioxide (NO2), and ozone (O3) concentrations, air temperature, relative humidity, and atmospheric pressure at 0, 2.5, 5, 10, 15, 20, 30, 40, 60, 80, and 100 m in urban forest, street, and community areas were collected by unmanned aerial vehicles (UAVs) equipped with Sniffer4D V2 on overcast and sunny days. The PM, CO, NO2, and O3 concentrations increased with height below 20 m and then slightly decreased with height on an overcast day, whereas SO2 concentrations decreased with height within 20 m. The urban forest increased PM concentrations in the morning of an overcast day, whereas it decreased PM concentrations in the afternoon of the overcast day. The forest obstructed PM dispersion from the canopy when PM concentrations grew lower in the morning, but it hindered PM from deposition when PM concentrations grew higher in the afternoon.https://www.frontiersin.org/articles/10.3389/fevo.2022.1045937/fullair pollutantsurban forestvertical dispersionUAVs platformPM
spellingShingle Chunping Miao
Chunping Miao
Aiwei Cui
Zaiping Xiong
Yuanman Hu
Wei Chen
Wei Chen
Wei Chen
Xingyuan He
Xingyuan He
Xingyuan He
Vertical evaluation of air quality improvement by urban forest using unmanned aerial vehicles
Frontiers in Ecology and Evolution
air pollutants
urban forest
vertical dispersion
UAVs platform
PM
title Vertical evaluation of air quality improvement by urban forest using unmanned aerial vehicles
title_full Vertical evaluation of air quality improvement by urban forest using unmanned aerial vehicles
title_fullStr Vertical evaluation of air quality improvement by urban forest using unmanned aerial vehicles
title_full_unstemmed Vertical evaluation of air quality improvement by urban forest using unmanned aerial vehicles
title_short Vertical evaluation of air quality improvement by urban forest using unmanned aerial vehicles
title_sort vertical evaluation of air quality improvement by urban forest using unmanned aerial vehicles
topic air pollutants
urban forest
vertical dispersion
UAVs platform
PM
url https://www.frontiersin.org/articles/10.3389/fevo.2022.1045937/full
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