{"id":"https://openalex.org/W3101559345","doi":"https://doi.org/10.1109/jstars.2020.3030591","title":"National Forest Biomass Mapping Using the Two-Level Model","display_name":"National Forest Biomass Mapping Using the Two-Level Model","publication_year":2020,"publication_date":"2020-01-01","ids":{"openalex":"https://openalex.org/W3101559345","doi":"https://doi.org/10.1109/jstars.2020.3030591","mag":"3101559345"},"language":"en","primary_location":{"id":"doi:10.1109/jstars.2020.3030591","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2020.3030591","pdf_url":"https://ieeexplore.ieee.org/ielx7/4609443/8994817/09222480.pdf","source":{"id":"https://openalex.org/S117727964","display_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","issn_l":"1939-1404","issn":["1939-1404","2151-1535"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://ieeexplore.ieee.org/ielx7/4609443/8994817/09222480.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5031343326","display_name":"Henrik Persson","orcid":"https://orcid.org/0000-0002-3403-057X"},"institutions":[{"id":"https://openalex.org/I298625061","display_name":"Swedish University of Agricultural Sciences","ror":"https://ror.org/02yy8x990","country_code":"SE","type":"education","lineage":["https://openalex.org/I298625061"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Henrik J. Persson","raw_affiliation_strings":["Swedish University of Agricultural Sciences, Ume\u00e5, Sweden","ORCiD","Swedish University of Agricultural Sciences, Ume&#x00E5;, Sweden"],"raw_orcid":"https://orcid.org/0000-0002-3403-057X","affiliations":[{"raw_affiliation_string":"Swedish University of Agricultural Sciences, Ume\u00e5, Sweden","institution_ids":["https://openalex.org/I298625061"]},{"raw_affiliation_string":"ORCiD","institution_ids":[]},{"raw_affiliation_string":"Swedish University of Agricultural Sciences, Ume&#x00E5;, Sweden","institution_ids":["https://openalex.org/I298625061"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056803638","display_name":"Maciej J. Soja","orcid":"https://orcid.org/0000-0002-4683-3142"},"institutions":[{"id":"https://openalex.org/I129801699","display_name":"University of Tasmania","ror":"https://ror.org/01nfmeh72","country_code":"AU","type":"education","lineage":["https://openalex.org/I129801699"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Maciej J. Soja","raw_affiliation_strings":["MJ Soja Consulting, Battery Point, TAS, Australia","University of Tasmania, Hobart, TAS, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"MJ Soja Consulting, Battery Point, TAS, Australia","institution_ids":[]},{"raw_affiliation_string":"University of Tasmania, Hobart, TAS, Australia","institution_ids":["https://openalex.org/I129801699"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5009216756","display_name":"Johan E. S. Fransson","orcid":"https://orcid.org/0000-0002-7913-8592"},"institutions":[{"id":"https://openalex.org/I298625061","display_name":"Swedish University of Agricultural Sciences","ror":"https://ror.org/02yy8x990","country_code":"SE","type":"education","lineage":["https://openalex.org/I298625061"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Johan E. S. Fransson","raw_affiliation_strings":["Swedish University of Agricultural Sciences, Ume\u00e5, Sweden","Swedish University of Agricultural Sciences, Ume&#x00E5;, Sweden"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Swedish University of Agricultural Sciences, Ume\u00e5, Sweden","institution_ids":["https://openalex.org/I298625061"]},{"raw_affiliation_string":"Swedish University of Agricultural Sciences, Ume&#x00E5;, Sweden","institution_ids":["https://openalex.org/I298625061"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5030673696","display_name":"Lars M. H. Ulander","orcid":"https://orcid.org/0000-0001-5757-9517"},"institutions":[{"id":"https://openalex.org/I66862912","display_name":"Chalmers University of Technology","ror":"https://ror.org/040wg7k59","country_code":"SE","type":"education","lineage":["https://openalex.org/I66862912"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Lars M. H. Ulander","raw_affiliation_strings":["Chalmers University of Technology, Gothenburg, Sweden","ORCiD"],"raw_orcid":"https://orcid.org/0000-0001-5757-9517","affiliations":[{"raw_affiliation_string":"Chalmers University of Technology, Gothenburg, Sweden","institution_ids":["https://openalex.org/I66862912"]},{"raw_affiliation_string":"ORCiD","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":1250,"currency":"USD","value_usd":1250},"apc_paid":{"value":1250,"currency":"USD","value_usd":1250},"fwci":0.8106,"has_fulltext":true,"cited_by_count":13,"citation_normalized_percentile":{"value":0.67152418,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":97},"biblio":{"volume":"13","issue":null,"first_page":"6391","last_page":"6400"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11164","display_name":"Remote Sensing and LiDAR Applications","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11164","display_name":"Remote Sensing and LiDAR Applications","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10770","display_name":"Soil Geostatistics and Mapping","score":0.9976999759674072,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10889","display_name":"Soil erosion and sediment transport","score":0.9965999722480774,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/mean-squared-error","display_name":"Mean squared error","score":0.7567929625511169},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.6689918041229248},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.5395440459251404},{"id":"https://openalex.org/keywords/inversion","display_name":"Inversion (geology)","score":0.5108699202537537},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.4759499728679657},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.46245360374450684},{"id":"https://openalex.org/keywords/canopy","display_name":"Canopy","score":0.42956000566482544},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.41139835119247437},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.26566240191459656},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.12867730855941772}],"concepts":[{"id":"https://openalex.org/C139945424","wikidata":"https://www.wikidata.org/wiki/Q1940696","display_name":"Mean squared error","level":2,"score":0.7567929625511169},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.6689918041229248},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.5395440459251404},{"id":"https://openalex.org/C1893757","wikidata":"https://www.wikidata.org/wiki/Q3653001","display_name":"Inversion (geology)","level":3,"score":0.5108699202537537},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.4759499728679657},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.46245360374450684},{"id":"https://openalex.org/C101000010","wikidata":"https://www.wikidata.org/wiki/Q5033434","display_name":"Canopy","level":2,"score":0.42956000566482544},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.41139835119247437},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.26566240191459656},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.12867730855941772},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C109007969","wikidata":"https://www.wikidata.org/wiki/Q749565","display_name":"Structural basin","level":2,"score":0.0},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.0}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.1109/jstars.2020.3030591","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2020.3030591","pdf_url":"https://ieeexplore.ieee.org/ielx7/4609443/8994817/09222480.pdf","source":{"id":"https://openalex.org/S117727964","display_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","issn_l":"1939-1404","issn":["1939-1404","2151-1535"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","raw_type":"journal-article"},{"id":"pmh:oai:pub.epsilon.slu.se:19776","is_oa":false,"landing_page_url":null,"pdf_url":null,"source":{"id":"https://openalex.org/S4306402317","display_name":"Epsilon Open Archive (Sveriges lantbruksuniversitet biblioteket (Swedish University of Agricultural Sciences))","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I298625061","host_organization_name":"Swedish University of Agricultural Sciences","host_organization_lineage":["https://openalex.org/I298625061"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:doaj.org/article:ff9d7a63fc3c40a2881f195f40746c74","is_oa":true,"landing_page_url":"https://doaj.org/article/ff9d7a63fc3c40a2881f195f40746c74","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 13, Pp 6391-6400 (2020)","raw_type":"article"},{"id":"pmh:oai:research.chalmers.se:520498","is_oa":false,"landing_page_url":"https://research.chalmers.se/en/publication/520498","pdf_url":null,"source":{"id":"https://openalex.org/S4306402469","display_name":"Chalmers Research (Chalmers University of Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I66862912","host_organization_name":"Chalmers University of Technology","host_organization_lineage":["https://openalex.org/I66862912"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":null}],"best_oa_location":{"id":"doi:10.1109/jstars.2020.3030591","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2020.3030591","pdf_url":"https://ieeexplore.ieee.org/ielx7/4609443/8994817/09222480.pdf","source":{"id":"https://openalex.org/S117727964","display_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","issn_l":"1939-1404","issn":["1939-1404","2151-1535"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/15","score":0.7300000190734863,"display_name":"Life in Land"}],"awards":[{"id":"https://openalex.org/G2847523824","display_name":null,"funder_award_id":"SMK1744","funder_id":"https://openalex.org/F4320324135","funder_display_name":"Kempestiftelserna"},{"id":"https://openalex.org/G861969357","display_name":"Forest biomass and biomass change with spaceborne SAR","funder_award_id":"300/16","funder_id":"https://openalex.org/F4320321031","funder_display_name":"Swedish National Space Agency"}],"funders":[{"id":"https://openalex.org/F4320321031","display_name":"Swedish National Space Agency","ror":"https://ror.org/04t512h04"},{"id":"https://openalex.org/F4320321602","display_name":"Deutsches Zentrum f\u00fcr Luft- und Raumfahrt","ror":"https://ror.org/04bwf3e34"},{"id":"https://openalex.org/F4320324135","display_name":"Kempestiftelserna","ror":"https://ror.org/05cszw148"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3101559345.pdf","grobid_xml":"https://content.openalex.org/works/W3101559345.grobid-xml"},"referenced_works_count":59,"referenced_works":["https://openalex.org/W91198234","https://openalex.org/W164008171","https://openalex.org/W1480800708","https://openalex.org/W1955312676","https://openalex.org/W1964577983","https://openalex.org/W1973109852","https://openalex.org/W1976543496","https://openalex.org/W1984040117","https://openalex.org/W1992541517","https://openalex.org/W1996325835","https://openalex.org/W1997427322","https://openalex.org/W2001470990","https://openalex.org/W2005216682","https://openalex.org/W2008542193","https://openalex.org/W2013706195","https://openalex.org/W2017131791","https://openalex.org/W2024332571","https://openalex.org/W2033489424","https://openalex.org/W2038273160","https://openalex.org/W2057327074","https://openalex.org/W2057880313","https://openalex.org/W2059394037","https://openalex.org/W2064235439","https://openalex.org/W2070716741","https://openalex.org/W2077809046","https://openalex.org/W2092911007","https://openalex.org/W2100348820","https://openalex.org/W2111449514","https://openalex.org/W2143718706","https://openalex.org/W2147753041","https://openalex.org/W2148080629","https://openalex.org/W2149304263","https://openalex.org/W2175899267","https://openalex.org/W2180526376","https://openalex.org/W2216605777","https://openalex.org/W2266079392","https://openalex.org/W2316147561","https://openalex.org/W2513136105","https://openalex.org/W2515583119","https://openalex.org/W2537499819","https://openalex.org/W2593681905","https://openalex.org/W2615774114","https://openalex.org/W2617211699","https://openalex.org/W2621380468","https://openalex.org/W2775250907","https://openalex.org/W2796894093","https://openalex.org/W2897781142","https://openalex.org/W2944518718","https://openalex.org/W2961962852","https://openalex.org/W2987973318","https://openalex.org/W3004930005","https://openalex.org/W4230025198","https://openalex.org/W4233606946","https://openalex.org/W4235881011","https://openalex.org/W4238514242","https://openalex.org/W6606613488","https://openalex.org/W6628760605","https://openalex.org/W6651668872","https://openalex.org/W6739055636"],"related_works":["https://openalex.org/W2347729776","https://openalex.org/W2081457971","https://openalex.org/W2028659695","https://openalex.org/W2072749356","https://openalex.org/W2014400117","https://openalex.org/W2587804871","https://openalex.org/W4389236673","https://openalex.org/W2021924154","https://openalex.org/W2423785987","https://openalex.org/W4252699458"],"abstract_inverted_index":{"This":[0],"article":[1],"uses":[2],"the":[3,92,98,103,107,133,139,148,159,168,171,203,213],"two-level":[4],"model":[5,58,190,206],"(TLM)":[6],"to":[7,152,164,177],"predict":[8],"above-ground":[9],"biomass":[10],"(AGB)":[11],"from":[12,41,49,78],"TanDEM-X":[13],"synthetic":[14],"aperture":[15],"radar":[16],"(SAR)":[17],"data":[18,23],"for":[19,63,193,210],"Sweden.":[20,197],"The":[21,37,57,67,117],"SAR":[22],"were":[24,60,109,142,157],"acquired":[25],"between":[26],"October":[27],"2015":[28],"and":[29,32,44,100,129,135,138,144],"January":[30],"2016":[31],"consisted":[33],"of":[34,121,174],"420":[35],"scenes.":[36],"AGB":[38,87],"was":[39,72,127,173,191],"estimated":[40,61,209],"forest":[42],"height":[43],"canopy":[45],"density":[46],"estimates":[47],"obtained":[48,179],"TLM":[50],"inversion":[51],"with":[52,94,207],"a":[53,84,181],"power":[54,204],"law":[55,205],"model.":[56],"parameters":[59,208],"separately":[62],"each":[64,211],"satellite":[65],"scene.":[66],"prediction":[68],"accuracy":[69],"at":[70,132,167],"stand-level":[71],"evaluated":[73],"using":[74,153,202],"field":[75,155],"inventoried":[76],"references":[77,156],"entire":[79],"Sweden":[80],"2017,":[81],"provided":[82],"by":[83],"forestry":[85],"company.":[86],"estimation":[88],"performance":[89],"varied":[90],"throughout":[91],"country,":[93],"smaller":[95],"errors":[96,108,150],"in":[97,102,111,119,180,196],"north":[99],"larger":[101],"south,":[104],"but":[105],"when":[106],"expressed":[110],"relative":[112],"terms,":[113],"this":[114],"pattern":[115],"vanished.":[116],"error":[118,125],"terms":[120],"root":[122],"mean":[123],"square":[124],"(RMSE)":[126],"45.6":[128],"27.2":[130],"t/ha":[131,166],"plot-":[134],"stand-level,":[136],"respectively,":[137],"corresponding":[140],"biases":[141],"-8.80":[143],"11.2":[145],"t/ha.":[146],"When":[147],"random":[149],"related":[151],"sampled":[154],"removed,":[158],"RMSE":[160,172],"decreased":[161],"about":[162],"24%":[163],"20.7":[165],"stand-level.":[169],"Overall,":[170],"similar":[175],"order":[176],"that":[178],"previous":[182],"study":[183],"(27-30":[184],"t/ha),":[185],"where":[186],"one":[187],"linear":[188],"regression":[189],"used":[192],"all":[194],"scenes":[195],"It":[198],"is":[199],"concluded":[200],"that,":[201],"scene,":[212],"scene-wise":[214],"variations":[215],"decreased.":[216]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":2}],"updated_date":"2026-07-28T07:46:37.118299","created_date":"2025-10-10T00:00:00"}
