{"id":"https://openalex.org/W2951694820","doi":"https://doi.org/10.1109/access.2019.2922003","title":"Retrieval of Green-up Onset Date From MODIS Derived NDVI in Grasslands of Inner Mongolia","display_name":"Retrieval of Green-up Onset Date From MODIS Derived NDVI in Grasslands of Inner Mongolia","publication_year":2019,"publication_date":"2019-01-01","ids":{"openalex":"https://openalex.org/W2951694820","doi":"https://doi.org/10.1109/access.2019.2922003","mag":"2951694820"},"language":"en","primary_location":{"id":"doi:10.1109/access.2019.2922003","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2019.2922003","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/8600701/08734069.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"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":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://ieeexplore.ieee.org/ielx7/6287639/8600701/08734069.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100648295","display_name":"Baolin Wang","orcid":"https://orcid.org/0000-0002-7212-5596"},"institutions":[{"id":"https://openalex.org/I120379545","display_name":"Inner Mongolia Agricultural University","ror":"https://ror.org/015d0jq83","country_code":"CN","type":"education","lineage":["https://openalex.org/I120379545"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Baolin Wang","raw_affiliation_strings":["College of Grassland, Resources, and Environment, Inner Mongolia Agricultural University, Hohhot, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Grassland, Resources, and Environment, Inner Mongolia Agricultural University, Hohhot, China","institution_ids":["https://openalex.org/I120379545"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057698235","display_name":"Zhiyuan Tian","orcid":"https://orcid.org/0000-0003-1740-117X"},"institutions":[{"id":"https://openalex.org/I4210133666","display_name":"Tiandi Science & Technology (China)","ror":"https://ror.org/03ssr6t63","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210133666"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhiyuan Tian","raw_affiliation_strings":["Beijing Jiage Tiandi Technology Company, Ltd., Beijing, China"],"raw_orcid":"https://orcid.org/0000-0003-1740-117X","affiliations":[{"raw_affiliation_string":"Beijing Jiage Tiandi Technology Company, Ltd., Beijing, China","institution_ids":["https://openalex.org/I4210133666"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100691215","display_name":"Wenpeng Zhang","orcid":"https://orcid.org/0000-0002-7018-930X"},"institutions":[{"id":"https://openalex.org/I4210133666","display_name":"Tiandi Science & Technology (China)","ror":"https://ror.org/03ssr6t63","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210133666"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Wenpeng Zhang","raw_affiliation_strings":["Beijing Jiage Tiandi Technology Company, Ltd., Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Jiage Tiandi Technology Company, Ltd., Beijing, China","institution_ids":["https://openalex.org/I4210133666"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100343009","display_name":"Guoqing Chen","orcid":"https://orcid.org/0000-0003-3146-8530"},"institutions":[{"id":"https://openalex.org/I120379545","display_name":"Inner Mongolia Agricultural University","ror":"https://ror.org/015d0jq83","country_code":"CN","type":"education","lineage":["https://openalex.org/I120379545"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Guoqing Chen","raw_affiliation_strings":["College of Desert Control Science and Engineering, Inner Mongolia Agricultural University, Hohhot, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Desert Control Science and Engineering, Inner Mongolia Agricultural University, Hohhot, China","institution_ids":["https://openalex.org/I120379545"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101056117","display_name":"Guo Yue","orcid":null},"institutions":[{"id":"https://openalex.org/I120379545","display_name":"Inner Mongolia Agricultural University","ror":"https://ror.org/015d0jq83","country_code":"CN","type":"education","lineage":["https://openalex.org/I120379545"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yue Guo","raw_affiliation_strings":["College of Grassland, Resources, and Environment, Inner Mongolia Agricultural University, Hohhot, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Grassland, Resources, and Environment, Inner Mongolia Agricultural University, Hohhot, China","institution_ids":["https://openalex.org/I120379545"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5102900483","display_name":"Mingjiu Wang","orcid":null},"institutions":[{"id":"https://openalex.org/I120379545","display_name":"Inner Mongolia Agricultural University","ror":"https://ror.org/015d0jq83","country_code":"CN","type":"education","lineage":["https://openalex.org/I120379545"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Mingjiu Wang","raw_affiliation_strings":["College of Grassland, Resources, and Environment, Inner Mongolia Agricultural University, Hohhot, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Grassland, Resources, and Environment, Inner Mongolia Agricultural University, Hohhot, China","institution_ids":["https://openalex.org/I120379545"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":1850,"currency":"USD","value_usd":1850},"apc_paid":{"value":1850,"currency":"USD","value_usd":1850},"fwci":0.5208,"has_fulltext":true,"cited_by_count":6,"citation_normalized_percentile":{"value":0.6979628,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":"7","issue":null,"first_page":"77885","last_page":"77893"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10111","display_name":"Remote Sensing in Agriculture","score":0.9997000098228455,"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":0.9997000098228455,"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/T13890","display_name":"Remote Sensing and Land Use","score":0.9975000023841858,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10226","display_name":"Land Use and Ecosystem Services","score":0.9861000180244446,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"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/normalized-difference-vegetation-index","display_name":"Normalized Difference Vegetation Index","score":0.8580396771430969},{"id":"https://openalex.org/keywords/moderate-resolution-imaging-spectroradiometer","display_name":"Moderate-resolution imaging spectroradiometer","score":0.8222111463546753},{"id":"https://openalex.org/keywords/phenology","display_name":"Phenology","score":0.6946333050727844},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.6712952852249146},{"id":"https://openalex.org/keywords/inner-mongolia","display_name":"Inner mongolia","score":0.6538941860198975},{"id":"https://openalex.org/keywords/snow","display_name":"Snow","score":0.5947321653366089},{"id":"https://openalex.org/keywords/vegetation","display_name":"Vegetation (pathology)","score":0.5918142199516296},{"id":"https://openalex.org/keywords/enhanced-vegetation-index","display_name":"Enhanced vegetation index","score":0.5598881840705872},{"id":"https://openalex.org/keywords/precipitation","display_name":"Precipitation","score":0.5303956270217896},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.5094318985939026},{"id":"https://openalex.org/keywords/grassland","display_name":"Grassland","score":0.4904167354106903},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.44966521859169006},{"id":"https://openalex.org/keywords/physical-geography","display_name":"Physical geography","score":0.43617287278175354},{"id":"https://openalex.org/keywords/climatology","display_name":"Climatology","score":0.40348994731903076},{"id":"https://openalex.org/keywords/climate-change","display_name":"Climate change","score":0.3982882797718048},{"id":"https://openalex.org/keywords/atmospheric-sciences","display_name":"Atmospheric sciences","score":0.32498642802238464},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.29335153102874756},{"id":"https://openalex.org/keywords/vegetation-index","display_name":"Vegetation Index","score":0.2819184958934784},{"id":"https://openalex.org/keywords/china","display_name":"China","score":0.25670677423477173},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.16392233967781067},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.09881183505058289},{"id":"https://openalex.org/keywords/ecology","display_name":"Ecology","score":0.09562501311302185}],"concepts":[{"id":"https://openalex.org/C1549246","wikidata":"https://www.wikidata.org/wiki/Q718775","display_name":"Normalized Difference Vegetation Index","level":3,"score":0.8580396771430969},{"id":"https://openalex.org/C2777007095","wikidata":"https://www.wikidata.org/wiki/Q676840","display_name":"Moderate-resolution imaging spectroradiometer","level":3,"score":0.8222111463546753},{"id":"https://openalex.org/C51417038","wikidata":"https://www.wikidata.org/wiki/Q272737","display_name":"Phenology","level":2,"score":0.6946333050727844},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.6712952852249146},{"id":"https://openalex.org/C3017660400","wikidata":"https://www.wikidata.org/wiki/Q41079","display_name":"Inner mongolia","level":3,"score":0.6538941860198975},{"id":"https://openalex.org/C197046000","wikidata":"https://www.wikidata.org/wiki/Q7561","display_name":"Snow","level":2,"score":0.5947321653366089},{"id":"https://openalex.org/C2776133958","wikidata":"https://www.wikidata.org/wiki/Q7918366","display_name":"Vegetation (pathology)","level":2,"score":0.5918142199516296},{"id":"https://openalex.org/C78869512","wikidata":"https://www.wikidata.org/wiki/Q5378810","display_name":"Enhanced vegetation index","level":5,"score":0.5598881840705872},{"id":"https://openalex.org/C107054158","wikidata":"https://www.wikidata.org/wiki/Q25257","display_name":"Precipitation","level":2,"score":0.5303956270217896},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.5094318985939026},{"id":"https://openalex.org/C2775835988","wikidata":"https://www.wikidata.org/wiki/Q1006733","display_name":"Grassland","level":2,"score":0.4904167354106903},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.44966521859169006},{"id":"https://openalex.org/C100970517","wikidata":"https://www.wikidata.org/wiki/Q52107","display_name":"Physical geography","level":1,"score":0.43617287278175354},{"id":"https://openalex.org/C49204034","wikidata":"https://www.wikidata.org/wiki/Q52139","display_name":"Climatology","level":1,"score":0.40348994731903076},{"id":"https://openalex.org/C132651083","wikidata":"https://www.wikidata.org/wiki/Q7942","display_name":"Climate change","level":2,"score":0.3982882797718048},{"id":"https://openalex.org/C91586092","wikidata":"https://www.wikidata.org/wiki/Q757520","display_name":"Atmospheric sciences","level":1,"score":0.32498642802238464},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.29335153102874756},{"id":"https://openalex.org/C2780376076","wikidata":"https://www.wikidata.org/wiki/Q1499458","display_name":"Vegetation Index","level":4,"score":0.2819184958934784},{"id":"https://openalex.org/C191935318","wikidata":"https://www.wikidata.org/wiki/Q148","display_name":"China","level":2,"score":0.25670677423477173},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.16392233967781067},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.09881183505058289},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.09562501311302185},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"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/C111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","level":1,"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/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","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/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/access.2019.2922003","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2019.2922003","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/8600701/08734069.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"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":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:44dcd8ca365f481f994aa013ea31eb63","is_oa":true,"landing_page_url":"https://doaj.org/article/44dcd8ca365f481f994aa013ea31eb63","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 Access, Vol 7, Pp 77885-77893 (2019)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/access.2019.2922003","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2019.2922003","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/8600701/08734069.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"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":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Climate action","score":0.6600000262260437,"id":"https://metadata.un.org/sdg/13"}],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2951694820.pdf","grobid_xml":"https://content.openalex.org/works/W2951694820.grobid-xml"},"referenced_works_count":52,"referenced_works":["https://openalex.org/W1981429983","https://openalex.org/W1996463620","https://openalex.org/W2011160877","https://openalex.org/W2017297650","https://openalex.org/W2018636632","https://openalex.org/W2024689500","https://openalex.org/W2027690707","https://openalex.org/W2036706101","https://openalex.org/W2055571567","https://openalex.org/W2056447651","https://openalex.org/W2071518857","https://openalex.org/W2072093516","https://openalex.org/W2072834400","https://openalex.org/W2074222846","https://openalex.org/W2078100709","https://openalex.org/W2085249139","https://openalex.org/W2099098700","https://openalex.org/W2106151675","https://openalex.org/W2109606373","https://openalex.org/W2113410727","https://openalex.org/W2113481993","https://openalex.org/W2113503197","https://openalex.org/W2115952782","https://openalex.org/W2119513445","https://openalex.org/W2120397678","https://openalex.org/W2121745948","https://openalex.org/W2130662843","https://openalex.org/W2133813567","https://openalex.org/W2138378012","https://openalex.org/W2139429070","https://openalex.org/W2141720560","https://openalex.org/W2155490712","https://openalex.org/W2155728864","https://openalex.org/W2156873932","https://openalex.org/W2158818983","https://openalex.org/W2171596141","https://openalex.org/W2174597041","https://openalex.org/W2335432085","https://openalex.org/W2411353443","https://openalex.org/W2560628765","https://openalex.org/W2575237465","https://openalex.org/W2621041193","https://openalex.org/W2771579402","https://openalex.org/W2773717538","https://openalex.org/W2790761161","https://openalex.org/W2790944979","https://openalex.org/W2888962314","https://openalex.org/W2904489090","https://openalex.org/W4236001354","https://openalex.org/W4248454100","https://openalex.org/W6679352226","https://openalex.org/W6715007696"],"related_works":["https://openalex.org/W4387131574","https://openalex.org/W4378980784","https://openalex.org/W2374167006","https://openalex.org/W2144855297","https://openalex.org/W2250171873","https://openalex.org/W3173165341","https://openalex.org/W2921646734","https://openalex.org/W3207046288","https://openalex.org/W3207384893","https://openalex.org/W3183766399"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"moderate":[3],"resolution":[4],"imaging":[5],"spectroradiometer":[6],"(MODIS)":[7],"derived":[8,39,54,93],"normalized":[9],"difference":[10],"vegetation":[11,143],"index":[12],"(NDVI)":[13],"was":[14,48],"used":[15],"to":[16,31,63,68,99,141,157],"retrieve":[17],"the":[18,35,78,155],"onset":[19,56,95,119],"date":[20,57,96,120],"of":[21,26,37],"spring":[22,87,152],"phenology":[23,153],"in":[24,130,139,160,164],"grasslands":[25,134],"Inner":[27,165],"Mongolia":[28],"from":[29,61,97],"2002":[30,62,98],"2017.":[32],"To":[33],"validate":[34],"application":[36],"MODIS":[38,53,92,150],"data,":[40],"long-term":[41],"retrieval":[42],"and":[43,58,86,89,91,132,144],"investigation":[44],"on":[45],"its":[46],"reliability":[47],"performed.":[49],"The":[50],"correlation":[51],"between":[52,80],"green-up":[55,94,118],"ground":[59],"observations":[60],"2012":[64],"were":[65,101],"given":[66],"medium":[67,140],"high":[69],"strength":[70],"(R":[71],"<sup":[72],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[73],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">2</sup>":[74],":":[75],"0.58-0.81).":[76],"Besides,":[77],"relationship":[79],"seasonal":[81],"climate":[82,115],"variables,":[83],"including":[84],"winter":[85],"precipitation":[88],"temperature,":[90],"2017":[100],"established.":[102],"Overall,":[103],"linear":[104],"regression":[105],"analysis":[106],"shows":[107],"that":[108,149],"there":[109],"are":[110],"8-12":[111],"days":[112],"RMSE":[113],"for":[114],"variables":[116],"explaining":[117],"shifting.":[121],"This":[122],"satellite":[123],"method":[124],"might":[125],"have":[126],"a":[127],"poor":[128],"performance":[129],"sparse":[131],"snow-cover":[133],"but":[135],"is":[136],"fitted":[137],"well":[138],"dense":[142],"snow-free":[145],"grasslands.":[146],"These":[147],"suggest":[148],"estimated":[151],"has":[154],"potential":[156],"be":[158],"applied":[159],"grass":[161],"resources":[162],"utilization":[163],"Mongolia.":[166]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":2}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}