A spectral analysis of 25 boreal tree species

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Hovi, Aarne
dc.contributor.author Raitio, Pekka
dc.contributor.author Rautiainen, Miina
dc.date.accessioned 2017-10-15T20:41:44Z
dc.date.available 2017-10-15T20:41:44Z
dc.date.issued 2017-09-12
dc.identifier.citation Hovi , A , Raitio , P & Rautiainen , M 2017 , ' A spectral analysis of 25 boreal tree species ' SILVA FENNICA , vol 51 , no. 4 , 7753 . DOI: 10.14214/sf.7753 en
dc.identifier.issn 0037-5330
dc.identifier.other PURE UUID: a7bc70f9-e4ea-478c-8694-4f73e241abb7
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/a-spectral-analysis-of-25-boreal-tree-species(a7bc70f9-e4ea-478c-8694-4f73e241abb7).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85030219168&partnerID=8YFLogxK
dc.identifier.other PURE LINK: https://www.silvafennica.fi/article/7753
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/15136860/article7753.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/28266
dc.description.abstract Spectral libraries have a fundamental role in the development of interpretation methods for airborne and satellite-borne remote sensing data. This paper presents to-date the largest spectral measurement campaign of boreal tree species. Reflectance and transmittance spectra of over 600 leaf and needle samples from 25 species were measured in the Helsinki area (Finland) using integrating sphere systems attached to an ASD FieldSpec 4 spectroradiometer. Factors influencing the spectra and red edge inflection point (REIP) were quantified using one-way analysis of variance. Tree species differed most in the shortwave-infrared (1500–2500 nm) and least in the visible (400–700 nm) wavelength region. Species belonging to same genera showed similar spectral characteristics. Upper (adaxial) and lower (abaxial) leaf sides differed most in the visible region. Canopy position (sunlit/shaded) had a minor role in explaining spectral variation. For evergreen conifers, current and previous year needles differed in their spectra, current-year needles resembling those of broadleaved and deciduous conifers. Two broadleaved species were monitored throughout the growing season (May–October), and two conifers were measured twice during summer (June, September). Rapid changes were observed in the spectra in early spring and late autumn, whereas seasonal variations during summer months were relatively small for both broadleaved and coniferous species. Based on our results, shortwave-infrared seems promising in separating tree species, although it is to-date least studied. The spectral library reported here (Version 1.0) is publicly available through the SPECCHIO Spectral Information System. en
dc.format.extent 16
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries SILVA FENNICA en
dc.relation.ispartofseries Volume 51, issue 4 en
dc.rights openAccess en
dc.subject.other Forestry en
dc.subject.other Ecological Modelling en
dc.subject.other 1171 Geosciences en
dc.title A spectral analysis of 25 boreal tree species en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Built Environment
dc.contributor.department Department of Electronics and Nanoengineering en
dc.subject.keyword leaf
dc.subject.keyword needle
dc.subject.keyword reflectance
dc.subject.keyword transmittance
dc.subject.keyword albedo
dc.subject.keyword integrating sphere
dc.subject.keyword spectrometer
dc.subject.keyword Forestry
dc.subject.keyword Ecological Modelling
dc.subject.keyword 1171 Geosciences
dc.identifier.urn URN:NBN:fi:aalto-201710157126
dc.identifier.doi 10.14214/sf.7753
dc.type.version publishedVersion

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