{"id":"https://openalex.org/W2327080709","doi":"https://doi.org/10.1109/jstars.2016.2528262","title":"Examining High-Resolution PiSAR-L2 Textures for Estimating Tropical Forest Carbon Stocks","display_name":"Examining High-Resolution PiSAR-L2 Textures for Estimating Tropical Forest Carbon Stocks","publication_year":2016,"publication_date":"2016-03-03","ids":{"openalex":"https://openalex.org/W2327080709","doi":"https://doi.org/10.1109/jstars.2016.2528262","mag":"2327080709"},"language":"en","primary_location":{"id":"doi:10.1109/jstars.2016.2528262","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jstars.2016.2528262","pdf_url":null,"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":false,"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":null,"license_id":null,"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":"green","oa_url":"https://jaxa.repo.nii.ac.jp/records/22641","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5041377798","display_name":"Rajesh Bahadur Thapa","orcid":"https://orcid.org/0000-0003-4467-0148"},"institutions":[{"id":"https://openalex.org/I2800865746","display_name":"Japan Aerospace Exploration Agency","ror":"https://ror.org/059yhyy33","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2800865746"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Rajesh Bahadur Thapa","raw_affiliation_strings":["Earth Observation Research Center, Japan Aerospace Exploration Agency (JAXA), Tsukuba, Japan"],"raw_orcid":"https://orcid.org/0000-0003-4467-0148","affiliations":[{"raw_affiliation_string":"Earth Observation Research Center, Japan Aerospace Exploration Agency (JAXA), Tsukuba, Japan","institution_ids":["https://openalex.org/I2800865746"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101986414","display_name":"Manabu Watanabe","orcid":"https://orcid.org/0000-0002-1130-9420"},"institutions":[{"id":"https://openalex.org/I2800865746","display_name":"Japan Aerospace Exploration Agency","ror":"https://ror.org/059yhyy33","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2800865746"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Manabu Watanabe","raw_affiliation_strings":["Earth Observation Research Center, Japan Aerospace Exploration Agency (JAXA), Tsukuba, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Earth Observation Research Center, Japan Aerospace Exploration Agency (JAXA), Tsukuba, Japan","institution_ids":["https://openalex.org/I2800865746"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016225372","display_name":"Masanobu Shimada","orcid":"https://orcid.org/0000-0001-8981-6679"},"institutions":[{"id":"https://openalex.org/I2800865746","display_name":"Japan Aerospace Exploration Agency","ror":"https://ror.org/059yhyy33","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2800865746"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masanobu Shimada","raw_affiliation_strings":["Earth Observation Research Center, Japan Aerospace Exploration Agency (JAXA), Tsukuba, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Earth Observation Research Center, Japan Aerospace Exploration Agency (JAXA), Tsukuba, Japan","institution_ids":["https://openalex.org/I2800865746"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5031654867","display_name":"Takeshi Motohka","orcid":"https://orcid.org/0000-0001-7977-732X"},"institutions":[{"id":"https://openalex.org/I2800865746","display_name":"Japan Aerospace Exploration Agency","ror":"https://ror.org/059yhyy33","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2800865746"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takeshi Motohka","raw_affiliation_strings":["Earth Observation Research Center, Japan Aerospace Exploration Agency (JAXA), Tsukuba, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Earth Observation Research Center, Japan Aerospace Exploration Agency (JAXA), Tsukuba, Japan","institution_ids":["https://openalex.org/I2800865746"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I2800865746"],"apc_list":{"value":1250,"currency":"USD","value_usd":1250},"apc_paid":null,"fwci":19.5144,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.98845464,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"9","issue":"7","first_page":"3202","last_page":"3209"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11164","display_name":"Remote Sensing and LiDAR Applications","score":0.9980000257492065,"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":0.9847999811172485,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.6485687494277954},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.6164872050285339},{"id":"https://openalex.org/keywords/polarimetry","display_name":"Polarimetry","score":0.5017135143280029},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.41408947110176086},{"id":"https://openalex.org/keywords/interferometric-synthetic-aperture-radar","display_name":"Interferometric synthetic aperture radar","score":0.41163715720176697},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.24417567253112793},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.14529716968536377},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.10803589224815369}],"concepts":[{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.6485687494277954},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.6164872050285339},{"id":"https://openalex.org/C28493345","wikidata":"https://www.wikidata.org/wiki/Q899381","display_name":"Polarimetry","level":3,"score":0.5017135143280029},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.41408947110176086},{"id":"https://openalex.org/C22286887","wikidata":"https://www.wikidata.org/wiki/Q1666056","display_name":"Interferometric synthetic aperture radar","level":3,"score":0.41163715720176697},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.24417567253112793},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.14529716968536377},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.10803589224815369},{"id":"https://openalex.org/C191486275","wikidata":"https://www.wikidata.org/wiki/Q210028","display_name":"Scattering","level":2,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1109/jstars.2016.2528262","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jstars.2016.2528262","pdf_url":null,"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":false,"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":null,"license_id":null,"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:irdb.nii.ac.jp:01332:0004470482","is_oa":true,"landing_page_url":"https://jaxa.repo.nii.ac.jp/records/22641","pdf_url":null,"source":{"id":"https://openalex.org/S7407056385","display_name":"Institutional Repositories DataBase (IRDB)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I184597095","host_organization_name":"National Institute of Informatics","host_organization_lineage":["https://openalex.org/I184597095"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","raw_type":"journal article"},{"id":"pmh:oai:repository.exst.jaxa.jp:a-is/571068","is_oa":true,"landing_page_url":"https://repository.exst.jaxa.jp/dspace/handle/a-is/571068","pdf_url":null,"source":{"id":"https://openalex.org/S4306400084","display_name":"JAXA Repository (JAXA)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I2800865746","host_organization_name":"Japan Aerospace Exploration Agency","host_organization_lineage":["https://openalex.org/I2800865746"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Journal Article"}],"best_oa_location":{"id":"pmh:oai:irdb.nii.ac.jp:01332:0004470482","is_oa":true,"landing_page_url":"https://jaxa.repo.nii.ac.jp/records/22641","pdf_url":null,"source":{"id":"https://openalex.org/S7407056385","display_name":"Institutional Repositories DataBase (IRDB)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I184597095","host_organization_name":"National Institute of Informatics","host_organization_lineage":["https://openalex.org/I184597095"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","raw_type":"journal article"},"sustainable_development_goals":[{"display_name":"Life in Land","id":"https://metadata.un.org/sdg/15","score":0.7300000190734863}],"awards":[],"funders":[{"id":"https://openalex.org/F4320323954","display_name":"University of Tsukuba","ror":"https://ror.org/02956yf07"},{"id":"https://openalex.org/F4320334764","display_name":"Japan Society for the Promotion of Science","ror":"https://ror.org/00hhkn466"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W1605820702","https://openalex.org/W1970253947","https://openalex.org/W1973428156","https://openalex.org/W1978946733","https://openalex.org/W2008374411","https://openalex.org/W2008674189","https://openalex.org/W2014152252","https://openalex.org/W2014187500","https://openalex.org/W2024872310","https://openalex.org/W2030383024","https://openalex.org/W2031079430","https://openalex.org/W2035018709","https://openalex.org/W2044465660","https://openalex.org/W2050166462","https://openalex.org/W2058743274","https://openalex.org/W2066427000","https://openalex.org/W2080588314","https://openalex.org/W2122673356","https://openalex.org/W2136417393","https://openalex.org/W2144499995","https://openalex.org/W2147475079","https://openalex.org/W6636065067"],"related_works":["https://openalex.org/W2899084033","https://openalex.org/W2373310320","https://openalex.org/W2781934594","https://openalex.org/W2790032735","https://openalex.org/W2387499565","https://openalex.org/W3206958763","https://openalex.org/W2148958581","https://openalex.org/W2910315605","https://openalex.org/W4252699458","https://openalex.org/W2469797871"],"abstract_inverted_index":{"This":[0,215],"study":[1],"examines":[2],"the":[3,45,101,137,144,164,201,218,224,236],"potential":[4,141,159,225],"of":[5,41,54,117,139,175,187,196,207],"airborne":[6,27,219],"PiSARL2":[7],"data":[8,35,90,222],"for":[9,59,93,136],"estimating":[10],"forest":[11,61,228],"carbon":[12,62,229],"stocks":[13,63,230],"in":[14,49,67,143,235],"central":[15],"Sumatra.":[16],"Polarimetric":[17],"interferometric":[18],"synthetic":[19],"aperture":[20],"radar":[21],"L-band-2":[22],"(PiSAR-L2)":[23],"is":[24],"a":[25,37,172],"second-generation":[26],"sensor":[28],"developed":[29],"by":[30,128],"JAXA.":[31],"We":[32],"acquired":[33],"full-polarimetric":[34,221],"at":[36],"fine":[38],"spatial":[39],"resolution":[40],"2.5":[42],"m":[43],"during":[44],"PiSAR-L2":[46,220],"flight":[47],"campaign":[48],"August":[50],"2012.":[51],"A":[52],"total":[53],"59":[55],"field":[56,89],"measurement":[57],"plots":[58,81],"aboveground":[60],"(AFCSs)":[64],"were":[65,91,126,147,161],"established":[66],"same":[68],"year":[69],"where":[70],"AFCS":[71,97,182,202],"ranged":[72],"between":[73],"4.8":[74],"and":[75,84,95,111,114,123,154,177],"253.5":[76],"Mg":[77,189,209],"C":[78,190,210],"ha-1.":[79],"The":[80,132,158,168],"comprised":[82],"natural":[83],"plantation":[85],"forests.":[86],"These":[87],"plot-level":[88],"used":[92,135],"calibrating":[94],"validating":[96],"estimation":[98],"models":[99,142,160],"with":[100,184,204,231],"SAR":[102,197],"data.":[103],"Various":[104],"possibilities":[105],"including":[106],"direct":[107],"sigma":[108],"naught":[109],"backscatters":[110,176],"their":[112,178],"ratios":[113,179],"various":[115],"types":[116],"textures":[118],"obtained":[119],"from":[120],"HH,":[121],"HV,":[122],"VV":[124],"polarizations":[125],"examined":[127],"applying":[129],"regression":[130],"modeling.":[131],"main":[133],"indicators":[134],"selection":[138],"best":[140],"calibration":[145],"phase":[146],"R2,":[148],"variable":[149],"inflation":[150],"factor":[151],"(VIF),":[152],"p-value,":[153],"root-meansquared":[155],"errors":[156],"(RMSEs).":[157],"validated":[162],"using":[163],"leave-one-out":[165],"(LOO)":[166],"method.":[167],"results":[169],"indicated":[170],"that":[171,217],"simple":[173],"combination":[174],"provides":[180],"an":[181,185,192,205,212,232],"estimate":[183,227],"RMSE":[186,206],"42.37":[188],"ha-1and":[191,211],"R2of":[193,213],"0.65.":[194],"Inclusion":[195],"textural":[198],"parameters":[199],"improved":[200,233],"estimates":[203],"30.93":[208],"0.80.":[214],"indicates":[216],"have":[223],"to":[226],"accuracy":[234],"tropical":[237],"region.":[238]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":3},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2026-07-29T09:40:50.615796","created_date":"2025-10-10T00:00:00"}