{"id":"https://openalex.org/W3132596840","doi":"https://doi.org/10.1016/j.compag.2021.106031","title":"Predicting the contents of soil salt and major water-soluble ions with fractional-order derivative spectral indices and variable selection","display_name":"Predicting the contents of soil salt and major water-soluble ions with fractional-order derivative spectral indices and variable selection","publication_year":2021,"publication_date":"2021-02-15","ids":{"openalex":"https://openalex.org/W3132596840","doi":"https://doi.org/10.1016/j.compag.2021.106031","mag":"3132596840"},"language":"en","primary_location":{"id":"doi:10.1016/j.compag.2021.106031","doi":"https://doi.org/10.1016/j.compag.2021.106031","is_oa":false,"landing_page_url":"https://doi.org/10.1016/j.compag.2021.106031","pdf_url":null,"source":{"id":"https://openalex.org/S116775814","display_name":"Computers and Electronics in Agriculture","issn_l":"0168-1699","issn":["0168-1699","1872-7107"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","jufo-2","norway-2","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computers and Electronics in Agriculture","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"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/A5033761075","display_name":"Congcong Lao","orcid":"https://orcid.org/0009-0006-5574-0462","observed_orcids":["https://orcid.org/0009-0006-5574-0462"]},"institutions":[{"id":"https://openalex.org/I89652312","display_name":"Northwest A&F University","ror":"https://ror.org/0051rme32","country_code":"CN","type":"education","lineage":["https://openalex.org/I89652312"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Congcong Lao","raw_affiliation_strings":["College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]},{"raw_affiliation_string":"Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101953158","display_name":"Junying Chen","orcid":"https://orcid.org/0009-0003-5322-5211","observed_orcids":["https://orcid.org/0009-0003-5322-5211"]},"institutions":[{"id":"https://openalex.org/I89652312","display_name":"Northwest A&F University","ror":"https://ror.org/0051rme32","country_code":"CN","type":"education","lineage":["https://openalex.org/I89652312"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Junying Chen","raw_affiliation_strings":["College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]},{"raw_affiliation_string":"Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Zhitao Zhang","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I89652312","display_name":"Northwest A&F University","ror":"https://ror.org/0051rme32","country_code":"CN","type":"education","lineage":["https://openalex.org/I89652312"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Zhitao Zhang","raw_affiliation_strings":["College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]},{"raw_affiliation_string":"Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5022300251","display_name":"Yinwen Chen","orcid":"https://orcid.org/0000-0002-0634-4328","observed_orcids":["https://orcid.org/0000-0002-0634-4328"]},"institutions":[{"id":"https://openalex.org/I89652312","display_name":"Northwest A&F University","ror":"https://ror.org/0051rme32","country_code":"CN","type":"education","lineage":["https://openalex.org/I89652312"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yinwen Chen","raw_affiliation_strings":["Department of Foreign Languages, Northwest A&F University, Yangling 712100, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Foreign Languages, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100716498","display_name":"Yu Ma","orcid":"https://orcid.org/0000-0002-7804-1991","observed_orcids":["https://orcid.org/0000-0002-7804-1991"]},"institutions":[{"id":"https://openalex.org/I89652312","display_name":"Northwest A&F University","ror":"https://ror.org/0051rme32","country_code":"CN","type":"education","lineage":["https://openalex.org/I89652312"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yu Ma","raw_affiliation_strings":["College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]},{"raw_affiliation_string":"Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075181623","display_name":"Haorui Chen","orcid":"https://orcid.org/0000-0001-7820-9793","observed_orcids":["https://orcid.org/0000-0001-7820-9793"]},"institutions":[{"id":"https://openalex.org/I4210092032","display_name":"China Institute of Water Resources and Hydropower Research","ror":"https://ror.org/00m4czf33","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210092032"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Haorui Chen","raw_affiliation_strings":["Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, China","institution_ids":["https://openalex.org/I4210092032"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5024209487","display_name":"Xiaobo Gu","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I89652312","display_name":"Northwest A&F University","ror":"https://ror.org/0051rme32","country_code":"CN","type":"education","lineage":["https://openalex.org/I89652312"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiaobo Gu","raw_affiliation_strings":["College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]},{"raw_affiliation_string":"Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5037531369","display_name":"Jifeng Ning","orcid":"https://orcid.org/0000-0002-7751-0936","observed_orcids":["https://orcid.org/0000-0002-7751-0936"]},"institutions":[{"id":"https://openalex.org/I89652312","display_name":"Northwest A&F University","ror":"https://ror.org/0051rme32","country_code":"CN","type":"education","lineage":["https://openalex.org/I89652312"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jifeng Ning","raw_affiliation_strings":["College of Information Engineering, Northwest A&F University, Yangling 712100, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Information Engineering, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028336449","display_name":"Jiming Jin","orcid":"https://orcid.org/0000-0002-0075-7738","observed_orcids":["https://orcid.org/0000-0002-0075-7738"]},"institutions":[{"id":"https://openalex.org/I89652312","display_name":"Northwest A&F University","ror":"https://ror.org/0051rme32","country_code":"CN","type":"education","lineage":["https://openalex.org/I89652312"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jiming Jin","raw_affiliation_strings":["College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]},{"raw_affiliation_string":"Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101925303","display_name":"Xianwen Li","orcid":"https://orcid.org/0000-0002-4567-2172","observed_orcids":["https://orcid.org/0000-0002-4567-2172","https://orcid.org/0000-0001-5582-2827"]},"institutions":[{"id":"https://openalex.org/I89652312","display_name":"Northwest A&F University","ror":"https://ror.org/0051rme32","country_code":"CN","type":"education","lineage":["https://openalex.org/I89652312"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xianwen Li","raw_affiliation_strings":["College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]},{"raw_affiliation_string":"Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China","institution_ids":["https://openalex.org/I89652312"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I89652312"],"apc_list":{"value":3510,"currency":"USD","value_usd":3510},"apc_paid":null,"fwci":6.037,"has_fulltext":false,"cited_by_count":88,"citation_normalized_percentile":{"value":0.9854838,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":97,"max":100},"biblio":{"volume":"182","issue":null,"first_page":"106031","last_page":"106031"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10640","display_name":"Spectroscopy and Chemometric Analyses","score":0.9653000235557556,"subfield":{"id":"https://openalex.org/subfields/1602","display_name":"Analytical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10640","display_name":"Spectroscopy and Chemometric Analyses","score":0.9653000235557556,"subfield":{"id":"https://openalex.org/subfields/1602","display_name":"Analytical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10770","display_name":"Soil Geostatistics and Mapping","score":0.028699999675154686,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil 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/T10111","display_name":"Remote Sensing in Agriculture","score":0.0010000000474974513,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/soil-salinity","display_name":"soil salinity","score":0.9430000185966492},{"id":"https://openalex.org/keywords/water-soluble-inorganic-ions","display_name":"water-soluble ions","score":0.8240000009536743},{"id":"https://openalex.org/keywords/visible-and-near-infrared-spectroscopy","display_name":"visible and near-infrared spectroscopy","score":0.8960000276565552},{"id":"https://openalex.org/keywords/spectral-preprocessing","display_name":"spectral preprocessing","score":0.7110000252723694},{"id":"https://openalex.org/keywords/extreme-learning-machine","display_name":"extreme learning machine","score":0.9409999847412109},{"id":"https://openalex.org/keywords/feature-selection","display_name":"feature selection","score":0.9010000228881836},{"id":"https://openalex.org/keywords/monte-carlo-uninformative-variable-elimination","display_name":"Monte Carlo uninformative variable elimination","score":0.8820000290870667},{"id":"https://openalex.org/keywords/hetao-irrigation-district","display_name":"Hetao Irrigation District","score":0.9490000009536743},{"id":"https://openalex.org/keywords/carbonate-ions","display_name":"carbonate ions","score":0.34299999475479126}],"concepts":[{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.5571550130844116},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.5036115050315857},{"id":"https://openalex.org/C145148216","wikidata":"https://www.wikidata.org/wiki/Q36496","display_name":"Ion","level":2,"score":0.4974375069141388},{"id":"https://openalex.org/C111771559","wikidata":"https://www.wikidata.org/wiki/Q66295","display_name":"Derivative (finance)","level":2,"score":0.4882259666919708},{"id":"https://openalex.org/C113196181","wikidata":"https://www.wikidata.org/wiki/Q485223","display_name":"Analytical Chemistry (journal)","level":2,"score":0.4553814232349396},{"id":"https://openalex.org/C24939127","wikidata":"https://www.wikidata.org/wiki/Q373499","display_name":"Water content","level":2,"score":0.4236024022102356},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.38227590918540955},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.3552638292312622},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.25036007165908813},{"id":"https://openalex.org/C107872376","wikidata":"https://www.wikidata.org/wiki/Q321355","display_name":"Environmental chemistry","level":1,"score":0.1788068413734436},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.10793182253837585},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"score":0.0},{"id":"https://openalex.org/C106159729","wikidata":"https://www.wikidata.org/wiki/Q2294553","display_name":"Financial economics","level":1,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/j.compag.2021.106031","doi":"https://doi.org/10.1016/j.compag.2021.106031","is_oa":false,"landing_page_url":"https://doi.org/10.1016/j.compag.2021.106031","pdf_url":null,"source":{"id":"https://openalex.org/S116775814","display_name":"Computers and Electronics in Agriculture","issn_l":"0168-1699","issn":["0168-1699","1872-7107"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","jufo-2","norway-2","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computers and Electronics in Agriculture","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.5365999937057495,"id":"https://metadata.un.org/sdg/2","display_name":"Zero hunger"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":33,"referenced_works":["https://openalex.org/W800641266","https://openalex.org/W1968114170","https://openalex.org/W1983000226","https://openalex.org/W1984638002","https://openalex.org/W1991571253","https://openalex.org/W1995170398","https://openalex.org/W2027220847","https://openalex.org/W2096990904","https://openalex.org/W2118026371","https://openalex.org/W2146738048","https://openalex.org/W2148770580","https://openalex.org/W2231144898","https://openalex.org/W2275931631","https://openalex.org/W2283490374","https://openalex.org/W2340888305","https://openalex.org/W2352700179","https://openalex.org/W2367544690","https://openalex.org/W2551518784","https://openalex.org/W2557100541","https://openalex.org/W2769689104","https://openalex.org/W2799569601","https://openalex.org/W2802435130","https://openalex.org/W2805224709","https://openalex.org/W2883090033","https://openalex.org/W2888972789","https://openalex.org/W2893188571","https://openalex.org/W2898280516","https://openalex.org/W2911852964","https://openalex.org/W2953026644","https://openalex.org/W2962331302","https://openalex.org/W2985057784","https://openalex.org/W2994645803","https://openalex.org/W3003919802"],"related_works":["https://openalex.org/W3107703815","https://openalex.org/W2796785159","https://openalex.org/W3092801627","https://openalex.org/W4286449715","https://openalex.org/W2911852964","https://openalex.org/W2792209502","https://openalex.org/W2352700179","https://openalex.org/W2557100541","https://openalex.org/W2802435130","https://openalex.org/W2898280516"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":16},{"year":2025,"cited_by_count":8},{"year":2024,"cited_by_count":20},{"year":2023,"cited_by_count":15},{"year":2022,"cited_by_count":24},{"year":2021,"cited_by_count":5}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2021-03-01T00:00:00"}
