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dc.contributor.authorPhua, MHen
dc.contributor.authorLing, ZYen
dc.contributor.authorCoomes, Daviden
dc.contributor.authorWong, Wen
dc.contributor.authorKorom, Aen
dc.contributor.authorTsuyuki, Sen
dc.contributor.authorIoki, Ken
dc.contributor.authorHirata, Yen
dc.contributor.authorSaito, Hen
dc.contributor.authorTakao, Gen
dc.date.accessioned2017-12-01T17:17:38Z
dc.date.available2017-12-01T17:17:38Z
dc.date.issued2017-06-30en
dc.identifier.issn1971-7458
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/269872
dc.description.abstract© SISEF. Accurately quantifying the above-ground carbon stock of tropical rainforest trees is the core component of “Reduction of Emissions from Deforestation and Forest Degradation-plus” (REDD+) projects and is important for evaluating the effects of anthropogenic global change. We used high-resolution optical imagery (IKONOS-2) to identify individual tree crowns in intact and degraded rainforests in the mountains of Northern Borneo, comparing our results with 50 ground-based plots dispersed in intact and degraded forests, within which all stems > 10 cm in diameter were measured and identified to species or genus. We used the dimensions of tree crowns detected in the imagery to estimate above-ground biomasses (AGBs) of individual trees and plots. To this purpose, preprocessed IKONOS imagery was segmented using a watershed algorithm; stem diameter values were then estimated from the cross-sectional crown areas of these trees using regression relationships obtained from ground-based measurements. Finally, we calculated the biomass of each tree (AGBT, in kg), and the AGB of plots by summation (AGBP, in Mg ha-1). Remotely sensed estimates of mean AGBT were similar to ground-based estimates in intact and degraded forests, even though small trees could not be detected from space-borne sensors. The intact and degraded forests not only had different AGB but were also dissimilar in biodiversity. A tree-centric approach to carbon mapping based on high-resolution optical imagery, could be a cheap alternative to airborne laser-scanning.
dc.titleSeeing trees from space: above-ground biomass estimates of intact and degraded montane rainforests from high-resolution optical imageryen
dc.typeArticle
prism.endingPage634
prism.issueIdentifier3en
prism.publicationDate2017en
prism.publicationNameIForesten
prism.startingPage625
prism.volume10en
dc.identifier.doi10.17863/CAM.11810
dcterms.dateAccepted2017-05-04en
rioxxterms.versionofrecord10.3832/ifor2204-010en
rioxxterms.versionAM*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2017-06-30en
dc.contributor.orcidCoomes, David [0000-0002-8261-2582]
dc.identifier.eissn1971-7458
rioxxterms.typeJournal Article/Reviewen
cam.issuedOnline2017-06-01en
rioxxterms.freetoread.startdate2018-06-01


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