{"id":"https://openalex.org/W3093660509","doi":"https://doi.org/10.3390/ijgi9110622","title":"Retrieval of Leaf Area Index Using Sentinel-2 Imagery in a Mixed Mediterranean Forest Area","display_name":"Retrieval of Leaf Area Index Using Sentinel-2 Imagery in a Mixed Mediterranean Forest Area","publication_year":2020,"publication_date":"2020-10-24","ids":{"openalex":"https://openalex.org/W3093660509","doi":"https://doi.org/10.3390/ijgi9110622","mag":"3093660509"},"language":"en","primary_location":{"id":"doi:10.3390/ijgi9110622","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi9110622","pdf_url":"https://www.mdpi.com/2220-9964/9/11/622/pdf?version=1604384893","source":{"id":"https://openalex.org/S2764431341","display_name":"ISPRS International Journal of Geo-Information","issn_l":"2220-9964","issn":["2220-9964"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ISPRS International Journal of Geo-Information","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2220-9964/9/11/622/pdf?version=1604384893","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5074347997","display_name":"Irene Chrysafis","orcid":"https://orcid.org/0000-0001-8611-3257"},"institutions":[{"id":"https://openalex.org/I147962203","display_name":"Democritus University of Thrace","ror":"https://ror.org/03bfqnx40","country_code":"GR","type":"education","lineage":["https://openalex.org/I147962203"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Irene Chrysafis","raw_affiliation_strings":["Department of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace, GR 68200 Orestiada, Greece"],"affiliations":[{"raw_affiliation_string":"Department of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace, GR 68200 Orestiada, Greece","institution_ids":["https://openalex.org/I147962203"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111998209","display_name":"Georgios Korakis","orcid":null},"institutions":[{"id":"https://openalex.org/I147962203","display_name":"Democritus University of Thrace","ror":"https://ror.org/03bfqnx40","country_code":"GR","type":"education","lineage":["https://openalex.org/I147962203"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Georgios Korakis","raw_affiliation_strings":["Department of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace, GR 68200 Orestiada, Greece"],"affiliations":[{"raw_affiliation_string":"Department of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace, GR 68200 Orestiada, Greece","institution_ids":["https://openalex.org/I147962203"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5029549688","display_name":"A. P. Kyriazopoulos","orcid":"https://orcid.org/0000-0002-5424-0857"},"institutions":[{"id":"https://openalex.org/I147962203","display_name":"Democritus University of Thrace","ror":"https://ror.org/03bfqnx40","country_code":"GR","type":"education","lineage":["https://openalex.org/I147962203"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Apostolos P. Kyriazopoulos","raw_affiliation_strings":["Department of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace, GR 68200 Orestiada, Greece"],"affiliations":[{"raw_affiliation_string":"Department of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace, GR 68200 Orestiada, Greece","institution_ids":["https://openalex.org/I147962203"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5041088872","display_name":"Giorgos Mallinis","orcid":"https://orcid.org/0000-0001-7123-5358"},"institutions":[{"id":"https://openalex.org/I21370196","display_name":"Aristotle University of Thessaloniki","ror":"https://ror.org/02j61yw88","country_code":"GR","type":"education","lineage":["https://openalex.org/I21370196"]}],"countries":["GR"],"is_corresponding":true,"raw_author_name":"Giorgos Mallinis","raw_affiliation_strings":["School of Rural and Surveying Engineering, Aristotle University of Thessaloniki, GR 54124 Thessaloniki, Greece"],"affiliations":[{"raw_affiliation_string":"School of Rural and Surveying Engineering, Aristotle University of Thessaloniki, GR 54124 Thessaloniki, Greece","institution_ids":["https://openalex.org/I21370196"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5041088872"],"corresponding_institution_ids":["https://openalex.org/I21370196"],"apc_list":{"value":1400,"currency":"CHF","value_usd":1515},"apc_paid":{"value":1400,"currency":"CHF","value_usd":1515},"fwci":1.8943,"has_fulltext":true,"cited_by_count":25,"citation_normalized_percentile":{"value":0.85017247,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"9","issue":"11","first_page":"622","last_page":"622"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10111","display_name":"Remote Sensing in Agriculture","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"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/T10111","display_name":"Remote Sensing in Agriculture","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"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/T14365","display_name":"Leaf Properties and Growth Measurement","score":0.9986000061035156,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant 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"}},{"id":"https://openalex.org/T11164","display_name":"Remote Sensing and LiDAR Applications","score":0.9968000054359436,"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/leaf-area-index","display_name":"Leaf area index","score":0.9034284353256226},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.7942769527435303},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.5603806972503662},{"id":"https://openalex.org/keywords/canopy","display_name":"Canopy","score":0.5269820690155029},{"id":"https://openalex.org/keywords/vegetation","display_name":"Vegetation (pathology)","score":0.4897151291370392},{"id":"https://openalex.org/keywords/shortwave","display_name":"Shortwave","score":0.4858133792877197},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.4210517108440399},{"id":"https://openalex.org/keywords/hyperspectral-imaging","display_name":"Hyperspectral imaging","score":0.4161057770252228},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.20713168382644653},{"id":"https://openalex.org/keywords/radiative-transfer","display_name":"Radiative transfer","score":0.11893412470817566},{"id":"https://openalex.org/keywords/ecology","display_name":"Ecology","score":0.11077859997749329}],"concepts":[{"id":"https://openalex.org/C25989453","wikidata":"https://www.wikidata.org/wiki/Q446746","display_name":"Leaf area index","level":2,"score":0.9034284353256226},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.7942769527435303},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5603806972503662},{"id":"https://openalex.org/C101000010","wikidata":"https://www.wikidata.org/wiki/Q5033434","display_name":"Canopy","level":2,"score":0.5269820690155029},{"id":"https://openalex.org/C2776133958","wikidata":"https://www.wikidata.org/wiki/Q7918366","display_name":"Vegetation (pathology)","level":2,"score":0.4897151291370392},{"id":"https://openalex.org/C2776272892","wikidata":"https://www.wikidata.org/wiki/Q7502249","display_name":"Shortwave","level":3,"score":0.4858133792877197},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.4210517108440399},{"id":"https://openalex.org/C159078339","wikidata":"https://www.wikidata.org/wiki/Q959005","display_name":"Hyperspectral imaging","level":2,"score":0.4161057770252228},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.20713168382644653},{"id":"https://openalex.org/C74902906","wikidata":"https://www.wikidata.org/wiki/Q1190858","display_name":"Radiative transfer","level":2,"score":0.11893412470817566},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.11077859997749329},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.0},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/ijgi9110622","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi9110622","pdf_url":"https://www.mdpi.com/2220-9964/9/11/622/pdf?version=1604384893","source":{"id":"https://openalex.org/S2764431341","display_name":"ISPRS International Journal of Geo-Information","issn_l":"2220-9964","issn":["2220-9964"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ISPRS International Journal of Geo-Information","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:3e8e82f9b6364596b56a03c827a74d8a","is_oa":true,"landing_page_url":"https://doaj.org/article/3e8e82f9b6364596b56a03c827a74d8a","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"ISPRS International Journal of Geo-Information, Vol 9, Iss 11, p 622 (2020)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2220-9964/9/11/622/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/ijgi9110622","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"ISPRS International Journal of Geo-Information; Volume 9; Issue 11; Pages: 622","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/ijgi9110622","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi9110622","pdf_url":"https://www.mdpi.com/2220-9964/9/11/622/pdf?version=1604384893","source":{"id":"https://openalex.org/S2764431341","display_name":"ISPRS International Journal of Geo-Information","issn_l":"2220-9964","issn":["2220-9964"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ISPRS International Journal of Geo-Information","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.7799999713897705,"display_name":"Life in Land","id":"https://metadata.un.org/sdg/15"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320318240","display_name":"European Space Agency","ror":"https://ror.org/03wd9za21"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3093660509.pdf","grobid_xml":"https://content.openalex.org/works/W3093660509.grobid-xml"},"referenced_works_count":73,"referenced_works":["https://openalex.org/W122852311","https://openalex.org/W221493477","https://openalex.org/W1527378451","https://openalex.org/W1669006701","https://openalex.org/W1731081199","https://openalex.org/W1967248741","https://openalex.org/W1969568499","https://openalex.org/W1991651418","https://openalex.org/W1995714011","https://openalex.org/W2002022751","https://openalex.org/W2006280268","https://openalex.org/W2007939589","https://openalex.org/W2046625771","https://openalex.org/W2047134852","https://openalex.org/W2052256290","https://openalex.org/W2054497277","https://openalex.org/W2063532465","https://openalex.org/W2064417027","https://openalex.org/W2071454092","https://openalex.org/W2076187848","https://openalex.org/W2086239585","https://openalex.org/W2087047858","https://openalex.org/W2089101419","https://openalex.org/W2094420085","https://openalex.org/W2106245975","https://openalex.org/W2112590417","https://openalex.org/W2119702195","https://openalex.org/W2125975229","https://openalex.org/W2132147719","https://openalex.org/W2143185985","https://openalex.org/W2151880387","https://openalex.org/W2157963336","https://openalex.org/W2161491521","https://openalex.org/W2167881994","https://openalex.org/W2301262366","https://openalex.org/W2319094006","https://openalex.org/W2338434179","https://openalex.org/W2339345728","https://openalex.org/W2413379912","https://openalex.org/W2461497717","https://openalex.org/W2517171266","https://openalex.org/W2531109463","https://openalex.org/W2558566172","https://openalex.org/W2589181229","https://openalex.org/W2611080000","https://openalex.org/W2734780326","https://openalex.org/W2758132920","https://openalex.org/W2771841295","https://openalex.org/W2803502822","https://openalex.org/W2805837072","https://openalex.org/W2902773593","https://openalex.org/W2903772126","https://openalex.org/W2906231571","https://openalex.org/W2918236962","https://openalex.org/W2921983296","https://openalex.org/W2945958600","https://openalex.org/W2950294063","https://openalex.org/W2964087232","https://openalex.org/W2976696463","https://openalex.org/W2995348623","https://openalex.org/W3011511010","https://openalex.org/W3023834480","https://openalex.org/W3035461749","https://openalex.org/W3043213732","https://openalex.org/W3100157715","https://openalex.org/W3140575786","https://openalex.org/W4230255741","https://openalex.org/W6631638649","https://openalex.org/W6649087404","https://openalex.org/W6677516837","https://openalex.org/W6726398038","https://openalex.org/W6728933153","https://openalex.org/W6757366324"],"related_works":["https://openalex.org/W2072166414","https://openalex.org/W3209970181","https://openalex.org/W2060875994","https://openalex.org/W2377212262","https://openalex.org/W4327748155","https://openalex.org/W2955967599","https://openalex.org/W2549050738","https://openalex.org/W4387208895","https://openalex.org/W1594879216","https://openalex.org/W2388815296"],"abstract_inverted_index":{"Leaf":[0],"area":[1],"index":[2,167],"(LAI)":[3],"is":[4],"a":[5,69,154],"crucial":[6],"biophysical":[7,43],"indicator":[8],"for":[9,37,63,82,104,132,176],"assessing":[10],"and":[11,15,26,99,127,163],"monitoring":[12],"the":[13,27,35,55,64,83,109,123,134,147,164,172],"structure":[14],"functions":[16],"of":[17,29,41,49,58,66,85,151,156,158],"forest":[18,71],"ecosystems.":[19],"Improvements":[20],"in":[21,74],"remote":[22],"sensing":[23],"instrumental":[24],"characteristics":[25],"availability":[28],"more":[30,38],"efficient":[31],"statistical":[32],"algorithms,":[33],"elevate":[34],"potential":[36],"accurate":[39],"models":[40],"vegetation":[42],"properties":[44],"including":[45],"LAI.":[46],"The":[47,138],"aim":[48],"this":[50],"study":[51],"was":[52,119,130],"to":[53,121],"assess":[54],"spectral":[56,100,142],"information":[57],"Sentinel-2":[59],"MSI":[60],"satellite":[61],"imagery":[62],"retrieval":[65],"LAI":[67,87,95,105,152,177],"over":[68],"mixed":[70],"ecosystem":[72],"located":[73],"northwest":[75],"Greece.":[76],"Forty-eight":[77],"field":[78],"plots":[79],"were":[80,102,169],"visited":[81],"collection":[84],"ground":[86],"measurements":[88],"using":[89,108],"an":[90],"ACCUPAR":[91],"LP-80:":[92],"PAR":[93],"&":[94],"Ceptometer.":[96],"Spectral":[97],"bands":[98,162],"indices":[101],"used":[103],"model":[106,139],"development":[107],"Gaussian":[110],"processes":[111],"regression":[112],"(GPR)":[113],"algorithm.":[114],"A":[115],"variable":[116,128],"selection":[117,145],"procedure":[118],"applied":[120],"improve":[122],"model\u2019s":[124],"prediction":[125],"accuracy,":[126],"importance":[129],"investigated":[131],"identifying":[133],"most":[135,148,173],"informative":[136],"variables.":[137],"resulting":[140],"from":[141],"indices\u2019":[143],"variables":[144],"produced":[146],"precise":[149],"predictions":[150],"with":[153],"coefficient":[155],"determination":[157],"0.854.":[159],"Shortwave":[160],"infrared":[161],"normalized":[165],"canopy":[166],"(NCI)":[168],"identified":[170],"as":[171],"important":[174],"features":[175],"prediction.":[178]},"counts_by_year":[{"year":2025,"cited_by_count":7},{"year":2024,"cited_by_count":6},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":6},{"year":2021,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2020-10-29T00:00:00"}