打印

作者

Zhixin Liu;Robert D. Brown;Senlin Zheng;Yi Jiang;Lihua Zhao

来源

URBAN FORESTRY & URBAN GREENING,Vol.50,Issue1,Article 126646

语言

英文

关键字

COMFA;Residential areas;Thermal comfort;Tree species;Tree planting arrangement

作者单位

Original article"}]},{"#name":"title","$":{"xmlns:ce":true,"id":"tit0005"},"_":"An in-depth analysis of the effect of trees on human energy fluxes"}],"floats":[],"footnotes":[],"attachments":[]},"vol-first":"50","vol-iss-suppl-text":"Volume 50","userSettings":{"forceAbstract":false,"creditCardPurchaseAllowed":true,"blockFullTextForAnonymousAccess":false,"disableWholeIssueDownload":false,"preventTransactionalAccess":false,"preventDocumentDelivery":true},"contentType":"JL","crossmark":true,"document-references":41,"freeHtmlGiven":false,"hasChorus":false,"ssoUrls":["//acw.evise.com/SSOCore/update?acw=de8f0f827ce7154e622ba79211ebcaf4cd30gxrqa%7C%24%7C745A484B004D88E917A5248AD4FC968CB9A9345D820A55E928A0D9C2C70D8883E7351FD266A506289ADDA2D133FDA688D61443903934BC393FBA44D1BD4E4F2EB0469A67597464825D387A21AFA2E514&utt=46251314c88757115b1cc96660de097c972ca7a-O9W","//acw.sciencedirect.com/SSOCore/update?acw=de8f0f827ce7154e622ba79211ebcaf4cd30gxrqa%7C%24%7C745A484B004D88E917A5248AD4FC968CB9A9345D820A55E928A0D9C2C70D8883E7351FD266A506289ADDA2D133FDA688D61443903934BC393FBA44D1BD4E4F2EB0469A67597464825D387A21AFA2E514&utt=46251314c88757115b1cc96660de097c972ca7a-O9W","//acw.elsevier.com/SSOCore/update?acw=de8f0f827ce7154e622ba79211ebcaf4cd30gxrqa%7C%24%7C745A484B004D88E917A5248AD4FC968CB9A9345D820A55E928A0D9C2C70D8883E7351FD266A506289ADDA2D133FDA688D61443903934BC393FBA44D1BD4E4F2EB0469A67597464825D387A21AFA2E514&utt=46251314c88757115b1cc96660de097c972ca7a-O9W"],"userProfile":{"departmentName":"ScienceDirect Guests","accessType":"GUEST","accountId":"228598","webUserId":"12975512","accountName":"ScienceDirect Guests","departmentId":"291352","userType":"NORMAL","hasMultipleOrganizations":false},"access":{"openAccess":false,"openArchive":false},"aipType":"none","articleEntitlement":{"entitled":false,"isCasaUser":false,"usageInfo":"(12975512,U|291352,D|228598,A|3,P|2,PL)(SDFE,CON|de8f0f827ce7154e622ba79211ebcaf4cd30gxrqa,SSO|ANON_GUEST,ACCESS_TYPE)"},"crawlerInformation":{"canCrawlPDFContent":false,"isCrawler":false},"dates":{"Available online":"7 March 2020","Received":"17 June 2019","Revised":["3 January 2020"],"Accepted":"2 March 2020","Publication date":"1 April 2020"},"displayViewFullText":false,"downloadFullIssue":false,"entitlementReason":"unsubscribed","headerConfig":{"helpUrl":"https://service.elsevier.com/app/home/supporthub/sciencedirect/","contactUrl":"https://service.elsevier.com/app/contact/supporthub/sciencedirect/","userName":"","userEmail":"","orgName":"ScienceDirect Guests","webUserId":"12975512","libraryBanner":{},"shib_regUrl":"","tick_regUrl":"","recentInstitutions":[],"canActivatePersonalization":false,"hasInstitutionalAssociation":false,"hasMultiOrg":false,"userType":"GUEST","userAnonymity":"ANON_GUEST","allowCart":true,"environment":"prod","cdnAssetsHost":"https://sdfestaticassets-us-east-1.sciencedirectassets.com"},"indexTag":true,"isCorpReq":false,"issn":"16188667","issn-primary-formatted":"1618-8667","issRange":"","publication-content":{"noElsevierLogo":false,"imprintPublisher":{"displayName":"Urban & Fischer","id":"507"},"isSpecialIssue":false,"isSampleIssue":false,"transactionsBlocked":false,"publicationOpenAccess":{"oaStatus":"","oaArticleCount":63,"openArchiveStatus":false,"openArchiveArticleCount":0,"openAccessStartDate":"","oaAllowsAuthorPaid":true},"issue-cover":{"attachment":[{"attachment-eid":"1-s2.0-S1618866720X00033-cov200h.gif","file-basename":"cov200h","extension":"gif","filename":"cov200h.gif","ucs-locator":["https://s3-eu-west-1.amazonaws.com/prod-ucs-content-store-eu-west/content/pii:S1618866720X00033/cover/DOWNSAMPLED200/image/gif/a4a19c6092d3dd5bfe8af2a1c827cfcf/cov200h.gif"],"attachment-type":"IMAGE-COVER-H200","filesize":"9591","pixel-height":"200","pixel-width":"150"},{"attachment-eid":"1-s2.0-S1618866720X00033-cov150h.gif","file-basename":"cov150h","extension":"gif","filename":"cov150h.gif","ucs-locator":["https://s3-eu-west-1.amazonaws.com/prod-ucs-content-store-eu-west/content/pii:S1618866720X00033/cover/DOWNSAMPLED/image/gif/b44b9112739e9c82744e9e78bf4b3c3e/cov150h.gif"],"attachment-type":"IMAGE-COVER-H150","filesize":"6624","pixel-height":"150","pixel-width":"113"}]},"smallCoverUrl":"https://ars.els-cdn.com/content/image/S16188667.gif","title":"urban-forestry-and-urban-greening","contentTypeCode":"JL","sourceOpenAccess":false,"publicationCoverImageUrl":"https://ars.els-cdn.com/content/image/1-s2.0-S1618866720X00033-cov150h.gif"},"useEnhancedReader":true,"volRange":"50","titleString":"An in-depth analysis of the effect of trees on human energy fluxes","shouldShowAmLink":false,"onAbstractAllowlist":true,"renderingMode":"Abstract","isAbstract":true,"isContentVisible":false,"ajaxLinks":{"referredToBy":true,"toc":true,"recommendations":true,"citingArticles":true}},"authors":{"content":[{"#name":"author-group","$":{"xmlns:ce":true,"id":"aug0005"},"$$":[{"#name":"author","$":{"id":"aut0005","author-id":"S1618866719304698-8939e092d97a464fd7c417512da220fd"},"$$":[{"#name":"given-name","_":"Zhixin;Building Environment and Energy Laboratory (BEEL), State Key Laboratory of Subtropical Building Science, South China University of Technology, Wushan 381, 510640, Guangzhou, China;Department of Landscape Architecture and Urban Planning, Texas A&M University, College Station, TX, 77840, USA;Building Environment and Energy Laboratory (BEEL), State Key Laboratory of Subtropical Building Science, South China University of Technology, Wushan 381, 510640, Guangzhou, China;Department of Landscape Architecture and Urban Planning, Texas A&M University, College Station, TX, 77840, USA

摘要

Urban residents are suffer from increased heat stress because of urban heat island intensification in combination with global climate change. Trees have been widely used for improving human thermal comfort. However, when it comes to practical design, it is not always clear what characteristics of trees are most important or how trees should be arranged to optimize thermal conditions. This study undertook an in-depth analysis of several tree species in various configurations. Fifty scenarios were evaluated in terms of how each tree and each configuration affected the energy fluxes of a person on hot sunny days. Results showed that the largest effect in all scenarios was on radiation flux, with a much smaller effect on the convective and evaporative fluxes. An even-distribution of trees was found to be overall most effective as it maximized the shaded area by avoiding unnecessary overlap. While the solar radiation reduction was the largest effect, a detailed analysis provided additional insight into the sometimes-large effect of terrestrial radiation. Taller trees with low branching height and dense crowns had the largest effect on solar radiation reduction. Terrestrial radiation was most affected by leaf albedo and sky view factor. Buildings surrounding a treed area increased both solar radiation (through reflection) and terrestrial radiation (through emission from hot surfaces). The results are universally applicable as the tree characteristics are not species-specific, and the energy fluxes are based on first principles.