Please use this identifier to cite or link to this item:
PIRA download icon_1.1View/Download Full Text
DC FieldValueLanguage
dc.contributorDepartment of Land Surveying and Geo-Informatics-
dc.contributorResearch Institute for Sustainable Urban Development-
dc.creatorMeng, Y-
dc.creatorWong, MS-
dc.creatorXing, H-
dc.creatorZhu, R-
dc.creatorQin, K-
dc.creatorKwan, MP-
dc.creatorLee, KH-
dc.creatorKwok, CYT-
dc.creatorLi, H-
dc.publisherNature Publishing Groupen_US
dc.rights© The Author(s) 2021en_US
dc.rightsOpen Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit
dc.rightsThe following publication Meng, Y., Wong, M. S., Xing, H., Zhu, R., Qin, K., Kwan, M. P., ... & Li, H. (2021). Effects of urban functional fragmentation on nitrogen dioxide (NO2) variation with anthropogenic-emission restriction in China. Scientific reports, 11(1), 1-15 is available at
dc.titleEffects of urban functional fragmentation on nitrogen dioxide (NO₂) variation with anthropogenic-emission restriction in Chinaen_US
dc.typeJournal/Magazine Articleen_US
dcterms.abstractUrban functional fragmentation plays an important role in assessing Nitrogen Dioxide (NO2) emissions and variations. While the mediated impact of anthropogenic-emission restriction has not been comprehensively discussed, the lockdown response to the novel coronavirus disease 2019 (COVID-19) provides an unprecedented opportunity to meet this goal. This study proposes a new idea to explore the effects of urban functional fragmentation on NO2 variation with anthropogenic-emission restriction in China. First, NO2 variations are quantified by an Autoregressive Integrated Moving Average with external variables-Dynamic Time Warping (SARIMAX-DTW)-based model. Then, urban functional fragmentation indices including industrial/public Edge Density (ED) and Landscape Shape Index (LSI), urban functional Aggregation Index (AI) and Number of Patches (NP) are developed. Finally, the mediated impacts of anthropogenic-emission restriction are assessed by evaluating the fragmentation-NO2 variation association before and during the lockdown during COVID-19. The findings reveal negative effects of industrial ED, public LSI, urban functional AI and NP and positive effects of public ED and industrial LSI on NO2 variation based on the restricted anthropogenic emissions. By comparing the association analysis before and during lockdown, the mediated impact of anthropogenic-emission restriction is revealed to partially increase the effect of industrial ED, industrial LSI, public LSI, urban functional AI and NP and decrease the effect of public ED on NO2 variation. This study provides scientific findings for redesigning the urban environment in related to the urban functional configuration to mitigating the air pollution, ultimately developing sustainable societies.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationScientific reports, 2021, v. 11, 11908-
dcterms.isPartOfScientific reports-
dc.description.validate202110 bcvc-
dc.description.oaVersion of Recorden_US
Appears in Collections:Journal/Magazine Article
Files in This Item:
File Description SizeFormat 
s41598-021-91236-w.pdf5.39 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Version of Record
View full-text via PolyU eLinks SFX Query
Show simple item record

Page views

Citations as of Jun 26, 2022


Citations as of Jun 23, 2022

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.