{"id":"https://openalex.org/W2012613798","doi":"https://doi.org/10.1109/geoinformatics.2010.5567675","title":"The comparison of different methods to measure leaf area index of forests in Maoershan Mountain, Northeastern China","display_name":"The comparison of different methods to measure leaf area index of forests in Maoershan Mountain, Northeastern China","publication_year":2010,"publication_date":"2010-06-01","ids":{"openalex":"https://openalex.org/W2012613798","doi":"https://doi.org/10.1109/geoinformatics.2010.5567675","mag":"2012613798"},"language":"en","primary_location":{"id":"doi:10.1109/geoinformatics.2010.5567675","is_oa":false,"landing_page_url":"https://doi.org/10.1109/geoinformatics.2010.5567675","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2010 18th International Conference on Geoinformatics","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5058742036","display_name":"Bailing Xing","orcid":null},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Bailing Xing","raw_affiliation_strings":["International Institute of Earth System Science, Nanjing University, Nanjing, China","International Institute for Earth System Science, Nanjing University , Nanjing , China"],"affiliations":[{"raw_affiliation_string":"International Institute of Earth System Science, Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]},{"raw_affiliation_string":"International Institute for Earth System Science, Nanjing University , Nanjing , China","institution_ids":["https://openalex.org/I881766915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010493327","display_name":"Weimin Ju","orcid":"https://orcid.org/0000-0002-0010-7401"},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Weimin Ju","raw_affiliation_strings":["International Institute of Earth System Science, Nanjing University, Nanjing, China","International Institute for Earth System Science, Nanjing University , Nanjing , China"],"affiliations":[{"raw_affiliation_string":"International Institute of Earth System Science, Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]},{"raw_affiliation_string":"International Institute for Earth System Science, Nanjing University , Nanjing , China","institution_ids":["https://openalex.org/I881766915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102098854","display_name":"Gaolong Zhu","orcid":null},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Gaolong Zhu","raw_affiliation_strings":["International Institute of Earth System Science, Nanjing University, Nanjing, China","International Institute for Earth System Science, Nanjing University , Nanjing , China"],"affiliations":[{"raw_affiliation_string":"International Institute of Earth System Science, Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]},{"raw_affiliation_string":"International Institute for Earth System Science, Nanjing University , Nanjing , China","institution_ids":["https://openalex.org/I881766915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100672487","display_name":"Xianfeng Li","orcid":null},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xianfeng Li","raw_affiliation_strings":["International Institute of Earth System Science, Nanjing University, Nanjing, China","International Institute for Earth System Science, Nanjing University , Nanjing , China"],"affiliations":[{"raw_affiliation_string":"International Institute of Earth System Science, Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]},{"raw_affiliation_string":"International Institute for Earth System Science, Nanjing University , Nanjing , China","institution_ids":["https://openalex.org/I881766915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071575671","display_name":"Yibo Liu","orcid":"https://orcid.org/0000-0002-4345-0138"},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yibo Liu","raw_affiliation_strings":["International Institute of Earth System Science, Nanjing University, Nanjing, China","International Institute for Earth System Science, Nanjing University , Nanjing , China"],"affiliations":[{"raw_affiliation_string":"International Institute of Earth System Science, Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]},{"raw_affiliation_string":"International Institute for Earth System Science, Nanjing University , Nanjing , China","institution_ids":["https://openalex.org/I881766915"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5016772666","display_name":"Yanlian Zhou","orcid":"https://orcid.org/0000-0002-9293-0365"},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yanlian Zhou","raw_affiliation_strings":["School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, China","School of Geographic and Oceano graphic Sciences, Nanjing University, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]},{"raw_affiliation_string":"School of Geographic and Oceano graphic Sciences, Nanjing University, Nanjing, China","institution_ids":["https://openalex.org/I881766915"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5058742036"],"corresponding_institution_ids":["https://openalex.org/I881766915"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.0874559,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"37","issue":null,"first_page":"1","last_page":"5"},"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":0.9993000030517578,"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":0.9955999851226807,"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/trac","display_name":"TRAC","score":0.9722502827644348},{"id":"https://openalex.org/keywords/leaf-area-index","display_name":"Leaf area index","score":0.9589976072311401},{"id":"https://openalex.org/keywords/canopy","display_name":"Canopy","score":0.6099437475204468},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.5976229906082153},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.5354511737823486},{"id":"https://openalex.org/keywords/atmospheric-sciences","display_name":"Atmospheric sciences","score":0.4474850594997406},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.11928465962409973},{"id":"https://openalex.org/keywords/ecology","display_name":"Ecology","score":0.11032035946846008},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.07798907160758972}],"concepts":[{"id":"https://openalex.org/C2778994249","wikidata":"https://www.wikidata.org/wiki/Q2842324","display_name":"TRAC","level":2,"score":0.9722502827644348},{"id":"https://openalex.org/C25989453","wikidata":"https://www.wikidata.org/wiki/Q446746","display_name":"Leaf area index","level":2,"score":0.9589976072311401},{"id":"https://openalex.org/C101000010","wikidata":"https://www.wikidata.org/wiki/Q5033434","display_name":"Canopy","level":2,"score":0.6099437475204468},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5976229906082153},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.5354511737823486},{"id":"https://openalex.org/C91586092","wikidata":"https://www.wikidata.org/wiki/Q757520","display_name":"Atmospheric sciences","level":1,"score":0.4474850594997406},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.11928465962409973},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.11032035946846008},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.07798907160758972},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","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/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/geoinformatics.2010.5567675","is_oa":false,"landing_page_url":"https://doi.org/10.1109/geoinformatics.2010.5567675","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2010 18th International Conference on Geoinformatics","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/15","score":0.7799999713897705,"display_name":"Life in Land"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W6747217","https://openalex.org/W1547906649","https://openalex.org/W1974902368","https://openalex.org/W1988242002","https://openalex.org/W1999091234","https://openalex.org/W2006264781","https://openalex.org/W2014431247","https://openalex.org/W2037317818","https://openalex.org/W2080870934","https://openalex.org/W2083053342","https://openalex.org/W2125763679","https://openalex.org/W2127723859","https://openalex.org/W2135801340","https://openalex.org/W2151647593","https://openalex.org/W2160521911","https://openalex.org/W2180426220","https://openalex.org/W2183676930"],"related_works":["https://openalex.org/W2012613798","https://openalex.org/W4296365110","https://openalex.org/W2054907416","https://openalex.org/W2014431247","https://openalex.org/W2377212262","https://openalex.org/W4327737531","https://openalex.org/W4327748155","https://openalex.org/W2955967599","https://openalex.org/W2549050738","https://openalex.org/W4387208895"],"abstract_inverted_index":{"Different":[0],"optical":[1],"instruments":[2],"are":[3,121,131,235,252,282],"currently":[4],"available":[5],"for":[6,166,176,241],"measuring":[7],"LAI":[8,11,41,51,55,59,70,74,105,115,161,175,182,216,229,263,276,302],"such":[9],"as":[10,295],"2000":[12],"Plant":[13],"Canopy":[14],"Analyser":[15],"(LAI-2000),":[16],"Tracing":[17],"Radiation":[18],"and":[19,24,63,69,78,125,127,135,194,227,239,256,275,286,300],"Architecture":[20],"of":[21,90,98,114,144,154,181,215,262,273,298],"Canopies":[22],"(TRAC)":[23],"Digital":[25],"Hemispherical":[26],"Photography":[27],"(DHP).":[28],"Their":[29],"applicability":[30],"varies":[31],"in":[32,84,95,219,309],"different":[33,45,119,186,244,280],"ecosystems.":[34],"This":[35],"study":[36,221],"was":[37],"devoted":[38],"to":[39,103,139,159,172],"compare":[40],"measured":[42,48,52,60,66,75,81,116,183,226,277],"using":[43,57,72,184,230,265],"four":[44,118,185,243,279],"methods":[46,120,187,281],"(LAI":[47],"by":[49,53,61,67,76,82,117,306],"DHP,":[50,68],"TRAC,":[54],"calculated":[56,71,199],"effective":[58,73],"LAI-2000":[62,77,145],"clumping":[64,79],"index":[65,80,192],"TRAC)":[83],"the":[85,142,150,231,266,271],"Maoershan":[86],"experimental":[87],"forest":[88],"farm":[89],"Northeast":[91],"Forestry":[92],"University":[93],"located":[94],"Shangzhi":[96],"city":[97],"Heilongjiang":[99],"province.":[100],"Methods":[101],"used":[102,294],"measure":[104],"have":[106],"considerable":[107],"effects":[108],"on":[109,204,270],"observed":[110],"LAI.":[111,155],"The":[112,179,223,259],"means":[113,261],"3.15,":[122],"4.73,":[123],"3.97,":[124],"4.24":[126],"corresponding":[128],"standard":[129],"deviations":[130],"1.54,":[132],"2.39,":[133],"1.82,":[134],"1.75,":[136],"respectively.":[137,258],"According":[138],"previous":[140],"studies,":[141],"combination":[143],"with":[146,188,278],"TRAC":[147,170,299],"can":[148],"give":[149],"most":[151],"reliable":[152],"measurements":[153],"Therefore,":[156],"DHP":[157,292],"tends":[158,171],"underestimate":[160],"at":[162],"this":[163,220,310],"area,":[164],"especially":[165],"dense":[167,177],"canopies":[168],"while":[169],"overestimate":[173],"slightly":[174],"canopies.":[178],"fitting":[180],"normalized":[189],"difference":[190],"vegetation":[191],"(NDVI)":[193],"reduced":[195],"simple":[196],"ratio":[197],"(RSR)":[198],"from":[200],"TM":[201],"data":[202],"acquired":[203],"June":[205],"24,":[206],"2009":[207],"indicated":[208],"that":[209,290],"RSR":[210,274],"is":[211,293],"a":[212,296],"better":[213],"predictor":[214],"than":[217],"NDVI":[218],"area.":[222,311],"agreements":[224],"between":[225],"estimated":[228],"best":[232],"fitted":[233],"models":[234,268],"58%,":[236],"70%,":[237],"57%":[238],"68%":[240],"these":[242],"methods.":[245],"Corresponding":[246],"root":[247],"mean":[248],"square":[249],"errors":[250],"(RMSE)":[251],"0.80,":[253],"0.85,":[254],"0.88,":[255],"0.75,":[257],"regional":[260],"retrieved":[264],"empirical":[267],"established":[269],"basis":[272],"3.47,":[283],"5.26,":[284],"4.31,":[285],"4.68,":[287],"respectively,":[288],"indicating":[289],"if":[291],"surrogate":[297],"LAI-2000,":[301],"might":[303],"be":[304],"underestimated":[305],"about":[307],"25.7%":[308]},"counts_by_year":[{"year":2014,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}