Detecting, quantifying, and mapping urban trees' structural defects using infrared thermography: Implications for tree risk assessment and management

《Detecting, quantifying, and mapping urban trees' structural defects using infrared thermography: Implications for tree risk assessment and management》

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作者: Yiannis G. Zevgolis;Maria Zinovia Alsamail;Triantaphyllos Akriotis;Panayiotis G. Dimitrakopoulos;Andreas Y. Troumbis

来源: URBAN FORESTRY & URBAN GREENING,Vol.75,Issue1,Article 127691

语言: 英文

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作者单位: Biodiversity Conservation Laboratory, Department of Environment, University of the Aegean, 81100 Mytilene, Lesvos, Greece;Biodiversity Conservation Laboratory, Department of Environment, University of the Aegean, 81100 Mytilene, Lesvos, Greece;Department of Systems Engineering, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Prague 6-Suchdol, Czech Republic;Nature Conservation Agency of the Czech Republic, Kaplanova 1931/1, 148 00 Prague 11-Chodov, Czech Republic;USDA Forest Service/Davey Institute, Davey Tree Expert Company, 5 Moon Library, SUNY-ESF, Syracuse, NY 13210, USA;US Geological Survey, Upper Midwest Water Science Center, 8505 Research Way, Middleton, WI 53562, USA;Department of Civil and Environmental Engineering, University of Wisconsin – Madison, Engineering Hall, 1415 Engineering Drive, Madison, WI 53716, USA;Wayne State University, College of Engineering, 5050 Anthony Wayne Drive, Detroit, MI 48202, USA;US Geological Survey, Upper Midwest Water Science Center, 5840 Enterprise Drive, Lansing, MI 48911, USA;University of Wisconsin – Stevens Point, College of Natural Resources, Room 278 Trainer Natural Resources Building, Stevens Point, WI 54481, USA;Department of Environmental Resources Engineering, SUNY ESF, Syracuse, NY 13210, USA;USDA Forest Service, Forest Inventory and Analysis, 5 Moon Library, SUNY-ESF, Syracuse, NY 13210, USA;Michigan State University, Department of Horticulture, 1066 Bogue Street, East Lansing, MI 48824, USA;Michigan State University, Department of Geography, Environment, and Spatial Sciences, 673 Auditorium Road, East Lansing, MI 48824, USA;Michigan State University, Department of Forestry, 480 Wilson Road, East Lansing, MI 48824, USA;Biodiversity Conservation Laboratory, Department of Environment, University of the Aegean, 81100 Mytilene, Lesvos, Greece;Department of Geography, University of the Aegean, 81100 Mytilene, Lesvos, Greece;The Martin Centre for Architecture, Department of Architecture, University of Cambridge, Cambridge CB2 1PX, UK;James Hutton Institute, Social, Economic and Geographical Sciences Group, Craigiebuckler, Aberdeen AB15 8QH, Scotland, UK;Department of Rural Economy, Environment & Society, Scotland’s Rural College (SRUC), Peter Wilson Building, Kings Buildings, West Mains Road, Edinburgh EH9 3JG, Scotland, UK;Original article"}]},{"#name":"title","$":{"id":"tit0005"},"_":"Urban residents value multi-functional urban greenspaces"}],"floats":[],"footnotes":[],"attachments":[]},"openArchive":false,"openAccess":true,"document-subtype":"fla","content-family":"serial","contentType":"JL","abstract":{"$$":[{"$$":[{"$":{"id":"sect0005"},"#name":"section-title","_":"Abstract"},{"$$":[{"$":{"view":"all","id":"sp0105"},"#name":"simple-para","_":"Urban greenspaces are multifunctional spaces, providing services to people and biodiversity. With space in urban areas being limited creation and maintenance of urban greenspaces relies on understanding the preferences of urban residents for their characteristics. Such preferences are expected to vary with current availability, and the availability of alternatives to greenspaces such as gardens or gyms. We carried out a nationwide discrete choice experiment with Scottish urban residents to estimate values associated with greenspace attributes of: recreational features; plants and natural features; trees; accessibility; time to walk from home and size, to test the hypotheses that: (i) people are willing to pay to maintain greenspace, (ii) people have willingness to pay for greenspaces with multiple functions, including features for direct use (e.g. play equipment) and biodiversity (e.g. wildflowers), (iii) willingness to pay for individual greenspace will vary according to socioeconomic characteristics and (iv) vary with the amount of greenspace or substitute facilities available. We find a positive willingness to pay to maintain greenspace in general, and higher willingness to pay for larger greenspaces closer to home, which are multifunctional and contain both direct use features (e.g. children’s play park) and biodiversity features. Although we find significant heterogeneity in willingness to pay for maintaining greenspace, this is not well explained by either socioeconomic characteristics or the availability of substitute facilities. Our results have relevance for urban natural capital accounting, and demonstrate to urban planners the importance of the design and maintenance of multi-functional greenspaces for urban populations and would benefit from future research that further explores heterogeneity, including perceptions of greenspace access and substitutes, and greenspace quality."}],"$":{"view":"all","id":"abs0010"},"#name":"abstract-sec"}],"$":{"view":"all","id":"ab0010","class":"author"},"#name":"abstract"}],"$":{"xmlns:ce":true,"xmlns:dm":true,"xmlns:sb":true},"#name":"abstracts"},"pdf":{"urlType":"download","url":"/science/article/pii/S1618866722002242/pdfft?md5=78efe035418ee17d8aa1c35913ed1bc2&pid=1-s2.0-S1618866722002242-main.pdf"},"iss-first":"","vol-first":"74","isThirdParty":false,"issn-primary-unformatted":"16188667","issn-primary-formatted":"1618-8667"}]},"references":{"content":[{"#name":"bibliography","$":{"xmlns:ce":true,"xmlns:aep":true,"xmlns:mml":true,"xmlns:xs":true,"xmlns:xlink":true,"xmlns:xocs":true,"xmlns:tb":true,"xmlns:xsi":true,"xmlns:cals":true,"xmlns:sb":true,"xmlns:sa":true,"xmlns:ja":true,"xmlns":true,"id":"bibliog0005","view":"all"},"$$":[{"#name":"section-title","$":{"id":"sect0145"},"_":"References

摘要: Urban trees are a fundamental and key component of urban green areas, however, they are subject to several stresses which can compromise their mechanical integrity through the development of defects such as wood decay. In this study, we evaluated the structural health state of trees in four urban parks in the city of Mytilene, Greece, using structural traits of the trees, their trunk surface temperature distribution as recorded using infrared thermography, and spatial statistics both at single tree and at park level. We developed thermal indices by analyzing data from 334 trees belonging to three main species (Robinia pseudoacacia, Morus alba and Melia azedarach). We estimated temperature spatial dependence across each tree trunk using Moran's I index, while statistically significant spatial clusters were assessed using local spatial autocorrelation statistics. Relationships between tree traits, thermal, and spatial indices were established using linear and logistic regression models. Finally, we used the Getis-Ord Gi* statistic for the identification of risky tree hotspots and we applied the kriging geostatistical procedure for mapping of such hotspots. Our results have shown that the thermal and spatial indices can sufficiently predict different types of structural defect, and to identify hotspots of risky trees and their spatial extent. This approach can successfully contribute to tree risk assessment for a more effective urban park management.

《Detecting, quantifying, and mapping urban trees&#39; structural defects using infrared thermography: Implications for tree risk assessment and management》

《Detecting, quantifying, and mapping urban trees' structural defects using infrared thermography: Implications for tree risk assessment and management》