{"id":"https://openalex.org/W2053409368","doi":"https://doi.org/10.1109/geoinformatics.2010.5567752","title":"Analysis of relationships among vegetation condition indices and multiple-time scale SPI of grassland in growing season","display_name":"Analysis of relationships among vegetation condition indices and multiple-time scale SPI of grassland in growing season","publication_year":2010,"publication_date":"2010-06-01","ids":{"openalex":"https://openalex.org/W2053409368","doi":"https://doi.org/10.1109/geoinformatics.2010.5567752","mag":"2053409368"},"language":"en","primary_location":{"id":"doi:10.1109/geoinformatics.2010.5567752","is_oa":false,"landing_page_url":"https://doi.org/10.1109/geoinformatics.2010.5567752","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":null,"display_name":"Jianjun Wu","orcid":null},"institutions":[{"id":"https://openalex.org/I25254941","display_name":"Beijing Normal University","ror":"https://ror.org/022k4wk35","country_code":"CN","type":"education","lineage":["https://openalex.org/I25254941"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Jianjun Wu","raw_affiliation_strings":["Academy of Disaster Reduction and Emergency Management MOCA/MOE, Beijing Normal University, Beijing, China","[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Academy of Disaster Reduction and Emergency Management MOCA/MOE, Beijing Normal University, Beijing, China","institution_ids":["https://openalex.org/I25254941"]},{"raw_affiliation_string":"[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]","institution_ids":["https://openalex.org/I25254941"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048441699","display_name":"Lei Zhou","orcid":"https://orcid.org/0000-0002-5473-8495"},"institutions":[{"id":"https://openalex.org/I25254941","display_name":"Beijing Normal University","ror":"https://ror.org/022k4wk35","country_code":"CN","type":"education","lineage":["https://openalex.org/I25254941"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Lei Zhou","raw_affiliation_strings":["Beijing Normal University, Beijing, Beijing, CN","[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Normal University, Beijing, Beijing, CN","institution_ids":["https://openalex.org/I25254941"]},{"raw_affiliation_string":"[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]","institution_ids":["https://openalex.org/I25254941"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5115590908","display_name":"Jie Zhang","orcid":"https://orcid.org/0009-0004-5173-9996"},"institutions":[{"id":"https://openalex.org/I25254941","display_name":"Beijing Normal University","ror":"https://ror.org/022k4wk35","country_code":"CN","type":"education","lineage":["https://openalex.org/I25254941"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jie Zhang","raw_affiliation_strings":["Beijing Normal University, Beijing, Beijing, CN","[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Normal University, Beijing, Beijing, CN","institution_ids":["https://openalex.org/I25254941"]},{"raw_affiliation_string":"[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]","institution_ids":["https://openalex.org/I25254941"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043061232","display_name":"Ming Liu","orcid":"https://orcid.org/0000-0002-8228-622X"},"institutions":[{"id":"https://openalex.org/I25254941","display_name":"Beijing Normal University","ror":"https://ror.org/022k4wk35","country_code":"CN","type":"education","lineage":["https://openalex.org/I25254941"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ming Liu","raw_affiliation_strings":["Beijing Normal University, Beijing, Beijing, CN","[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Normal University, Beijing, Beijing, CN","institution_ids":["https://openalex.org/I25254941"]},{"raw_affiliation_string":"[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]","institution_ids":["https://openalex.org/I25254941"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108049463","display_name":"Lin Zhao","orcid":"https://orcid.org/0000-0001-9106-3047"},"institutions":[{"id":"https://openalex.org/I25254941","display_name":"Beijing Normal University","ror":"https://ror.org/022k4wk35","country_code":"CN","type":"education","lineage":["https://openalex.org/I25254941"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Lin Zhao","raw_affiliation_strings":["Beijing Normal University, Beijing, Beijing, CN","[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Normal University, Beijing, Beijing, CN","institution_ids":["https://openalex.org/I25254941"]},{"raw_affiliation_string":"[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]","institution_ids":["https://openalex.org/I25254941"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5034422188","display_name":"Feifei Zhao","orcid":"https://orcid.org/0000-0002-4156-2750"},"institutions":[{"id":"https://openalex.org/I25254941","display_name":"Beijing Normal University","ror":"https://ror.org/022k4wk35","country_code":"CN","type":"education","lineage":["https://openalex.org/I25254941"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Feifei Zhao","raw_affiliation_strings":["Beijing Normal University, Beijing, Beijing, CN","[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Normal University, Beijing, Beijing, CN","institution_ids":["https://openalex.org/I25254941"]},{"raw_affiliation_string":"[State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, China]","institution_ids":["https://openalex.org/I25254941"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I25254941"],"apc_list":null,"apc_paid":null,"fwci":0.9607,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":{"value":0.77723922,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10111","display_name":"Remote Sensing in Agriculture","score":0.9995999932289124,"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":0.9995999932289124,"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/T10266","display_name":"Plant Water Relations and Carbon Dynamics","score":0.9980999827384949,"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"}},{"id":"https://openalex.org/T11186","display_name":"Hydrology and Drought Analysis","score":0.9962999820709229,"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/grassland","display_name":"Grassland","score":0.5871133804321289},{"id":"https://openalex.org/keywords/vegetation","display_name":"Vegetation (pathology)","score":0.5812373757362366},{"id":"https://openalex.org/keywords/growing-season","display_name":"Growing season","score":0.5624459385871887},{"id":"https://openalex.org/keywords/normalized-difference-vegetation-index","display_name":"Normalized Difference Vegetation Index","score":0.49262934923171997},{"id":"https://openalex.org/keywords/precipitation","display_name":"Precipitation","score":0.4896867573261261},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.4730226993560791},{"id":"https://openalex.org/keywords/scale","display_name":"Scale (ratio)","score":0.4701557159423828},{"id":"https://openalex.org/keywords/correlation","display_name":"Correlation","score":0.4300101399421692},{"id":"https://openalex.org/keywords/positive-correlation","display_name":"Positive correlation","score":0.4152357578277588},{"id":"https://openalex.org/keywords/physical-geography","display_name":"Physical geography","score":0.372826486825943},{"id":"https://openalex.org/keywords/climatology","display_name":"Climatology","score":0.33800095319747925},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.2770764231681824},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.26484161615371704},{"id":"https://openalex.org/keywords/climate-change","display_name":"Climate change","score":0.22572383284568787},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.22545823454856873},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.13494858145713806},{"id":"https://openalex.org/keywords/ecology","display_name":"Ecology","score":0.12554305791854858},{"id":"https://openalex.org/keywords/biology","display_name":"Biology","score":0.08331069350242615},{"id":"https://openalex.org/keywords/cartography","display_name":"Cartography","score":0.0786142349243164}],"concepts":[{"id":"https://openalex.org/C2775835988","wikidata":"https://www.wikidata.org/wiki/Q1006733","display_name":"Grassland","level":2,"score":0.5871133804321289},{"id":"https://openalex.org/C2776133958","wikidata":"https://www.wikidata.org/wiki/Q7918366","display_name":"Vegetation (pathology)","level":2,"score":0.5812373757362366},{"id":"https://openalex.org/C137660486","wikidata":"https://www.wikidata.org/wiki/Q732240","display_name":"Growing season","level":2,"score":0.5624459385871887},{"id":"https://openalex.org/C1549246","wikidata":"https://www.wikidata.org/wiki/Q718775","display_name":"Normalized Difference Vegetation Index","level":3,"score":0.49262934923171997},{"id":"https://openalex.org/C107054158","wikidata":"https://www.wikidata.org/wiki/Q25257","display_name":"Precipitation","level":2,"score":0.4896867573261261},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.4730226993560791},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.4701557159423828},{"id":"https://openalex.org/C117220453","wikidata":"https://www.wikidata.org/wiki/Q5172842","display_name":"Correlation","level":2,"score":0.4300101399421692},{"id":"https://openalex.org/C2986115478","wikidata":"https://www.wikidata.org/wiki/Q186290","display_name":"Positive correlation","level":2,"score":0.4152357578277588},{"id":"https://openalex.org/C100970517","wikidata":"https://www.wikidata.org/wiki/Q52107","display_name":"Physical geography","level":1,"score":0.372826486825943},{"id":"https://openalex.org/C49204034","wikidata":"https://www.wikidata.org/wiki/Q52139","display_name":"Climatology","level":1,"score":0.33800095319747925},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.2770764231681824},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.26484161615371704},{"id":"https://openalex.org/C132651083","wikidata":"https://www.wikidata.org/wiki/Q7942","display_name":"Climate change","level":2,"score":0.22572383284568787},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.22545823454856873},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.13494858145713806},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.12554305791854858},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.08331069350242615},{"id":"https://openalex.org/C58640448","wikidata":"https://www.wikidata.org/wiki/Q42515","display_name":"Cartography","level":1,"score":0.0786142349243164},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","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/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/geoinformatics.2010.5567752","is_oa":false,"landing_page_url":"https://doi.org/10.1109/geoinformatics.2010.5567752","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":[{"score":0.7699999809265137,"id":"https://metadata.un.org/sdg/13","display_name":"Climate action"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":18,"referenced_works":["https://openalex.org/W637874768","https://openalex.org/W1968113320","https://openalex.org/W1980595709","https://openalex.org/W1981535710","https://openalex.org/W1989279348","https://openalex.org/W1990912157","https://openalex.org/W2018636632","https://openalex.org/W2020289158","https://openalex.org/W2030811593","https://openalex.org/W2033996972","https://openalex.org/W2059523177","https://openalex.org/W2072093516","https://openalex.org/W2108564811","https://openalex.org/W2141720560","https://openalex.org/W2153179024","https://openalex.org/W2161881124","https://openalex.org/W6620621732","https://openalex.org/W6683063705"],"related_works":["https://openalex.org/W2360471910","https://openalex.org/W2996115036","https://openalex.org/W3080397319","https://openalex.org/W3096013024","https://openalex.org/W2415170322","https://openalex.org/W2161881124","https://openalex.org/W2969072466","https://openalex.org/W2391543016","https://openalex.org/W2046550984","https://openalex.org/W2364238915"],"abstract_inverted_index":{"Drought":[0],"is":[1,25,39,196],"one":[2],"of":[3,11,21,32,46,68,113,143,165,172,189,204],"the":[4,12,26,111,121,128,136,144,161,168,184,187],"important":[5],"environmental":[6],"disasters":[7],"in":[8],"various":[9],"parts":[10],"world":[13],"which":[14,73],"has":[15],"an":[16,40],"impact":[17],"on":[18,76,183],"many":[19],"aspects":[20],"society,":[22],"and":[23,48,53,63,98,119,133,157,167],"it":[24],"most":[27],"complex":[28],"but":[29,135,186],"least":[30],"understood":[31],"all":[33],"natural":[34],"hazards.":[35],"The":[36],"present":[37],"study":[38],"attempt":[41],"to":[42,86,106,126,181],"improve":[43],"our":[44],"understanding":[45],"characteristics":[47],"relationships":[49],"between":[50,150],"vegetation":[51],"condition":[52,191],"meteorological":[54],"factors":[55],"that":[56],"cause":[57],"drought.":[58,108],"Vegetation":[59],"Condition":[60],"Index":[61,102],"(VCI)":[62],"phenology":[64],"metric":[65],"called":[66],"Percent":[67],"Average":[69],"Seasonal":[70],"Greenness":[71],"(PASG)":[72],"are":[74],"based":[75],"10":[77],"years":[78],"(1999-2008)":[79],"time-series":[80],"SPOT":[81],"VGT-S":[82],"NDVI":[83],"were":[84],"used":[85,105],"monitor":[87],"grass":[88,145,190],"growing":[89,146],"condition.":[90],"Multiple-time":[91],"scale":[92],"(1-month,":[93],"2-month,":[94],"3-month,":[95],"6-month,":[96],"9-month":[97],"12-month)":[99],"Standardized":[100],"Precipitation":[101],"(SPI)":[103],"was":[104,124],"detect":[107],"By":[109],"analyzing":[110],"changes":[112],"correlation":[114,130],"coefficients":[115,149],"among":[116],"VCI,":[117,151],"PASG":[118,152,200],"SPIs,":[120],"3-month":[122],"SPI":[123],"found":[125],"have":[127,206],"best":[129],"with":[131,175],"VCI":[132,177],"PASG,":[134,176],"relationship":[137],"varies":[138],"significantly":[139],"during":[140],"different":[141],"periods":[142],"season.":[147],"Correlation":[148],"vs.":[153],"SPIs":[154],"reached":[155],"0.695":[156],"0.725":[158],"respectively":[159],"at":[160],"last":[162],"ten":[163,170],"days":[164,171],"September":[166],"first":[169],"October.":[173],"Compared":[174],"shows":[178],"more":[179,197],"sensitive":[180],"precipitation":[182],"whole,":[185],"results":[188],"monitoring":[192],"caused":[193],"by":[194],"drought":[195],"stable":[198],"using":[199],"than":[201],"VCI.":[202],"Both":[203],"them":[205],"a":[207],"certain":[208],"complementary":[209],"for":[210],"each":[211],"other.":[212]},"counts_by_year":[{"year":2016,"cited_by_count":2},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2026-04-28T14:05:53.105641","created_date":"2025-10-10T00:00:00"}