{"id":"https://openalex.org/W2951969386","doi":"https://doi.org/10.3390/rs11121464","title":"Estimation of Soil Heavy Metal Content Using Hyperspectral Data","display_name":"Estimation of Soil Heavy Metal Content Using Hyperspectral Data","publication_year":2019,"publication_date":"2019-06-20","ids":{"openalex":"https://openalex.org/W2951969386","doi":"https://doi.org/10.3390/rs11121464","mag":"2951969386"},"language":"en","primary_location":{"id":"doi:10.3390/rs11121464","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs11121464","pdf_url":"https://www.mdpi.com/2072-4292/11/12/1464/pdf?version=1561034939","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"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":"Remote Sensing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2072-4292/11/12/1464/pdf?version=1561034939","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100420215","display_name":"Zhenhua Liu","orcid":"https://orcid.org/0000-0002-5334-2202"},"institutions":[{"id":"https://openalex.org/I101479585","display_name":"South China Agricultural University","ror":"https://ror.org/05v9jqt67","country_code":"CN","type":"education","lineage":["https://openalex.org/I101479585"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhenhua Liu","raw_affiliation_strings":["College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China"],"affiliations":[{"raw_affiliation_string":"College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China","institution_ids":["https://openalex.org/I101479585"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004520830","display_name":"Ying L\u00fc","orcid":"https://orcid.org/0000-0003-4260-4569"},"institutions":[{"id":"https://openalex.org/I101479585","display_name":"South China Agricultural University","ror":"https://ror.org/05v9jqt67","country_code":"CN","type":"education","lineage":["https://openalex.org/I101479585"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ying Lu","raw_affiliation_strings":["College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China"],"affiliations":[{"raw_affiliation_string":"College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China","institution_ids":["https://openalex.org/I101479585"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101656298","display_name":"Yiping Peng","orcid":"https://orcid.org/0000-0003-4892-9698"},"institutions":[{"id":"https://openalex.org/I101479585","display_name":"South China Agricultural University","ror":"https://ror.org/05v9jqt67","country_code":"CN","type":"education","lineage":["https://openalex.org/I101479585"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yiping Peng","raw_affiliation_strings":["College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China"],"affiliations":[{"raw_affiliation_string":"College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China","institution_ids":["https://openalex.org/I101479585"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108768087","display_name":"Li Zhao","orcid":null},"institutions":[{"id":"https://openalex.org/I101479585","display_name":"South China Agricultural University","ror":"https://ror.org/05v9jqt67","country_code":"CN","type":"education","lineage":["https://openalex.org/I101479585"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Li Zhao","raw_affiliation_strings":["College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China"],"affiliations":[{"raw_affiliation_string":"College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China","institution_ids":["https://openalex.org/I101479585"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086878627","display_name":"Guangxing Wang","orcid":"https://orcid.org/0000-0002-5419-4547"},"institutions":[{"id":"https://openalex.org/I101479585","display_name":"South China Agricultural University","ror":"https://ror.org/05v9jqt67","country_code":"CN","type":"education","lineage":["https://openalex.org/I101479585"]},{"id":"https://openalex.org/I110378019","display_name":"Southern Illinois University Carbondale","ror":"https://ror.org/049kefs16","country_code":"US","type":"education","lineage":["https://openalex.org/I110378019","https://openalex.org/I2801502357"]}],"countries":["CN","US"],"is_corresponding":false,"raw_author_name":"Guangxing Wang","raw_affiliation_strings":["College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China","Department of Geography and Environmental Resources, College of Liberal Arts, Southern Illinois University Carbondale (SIUC), Carbondale, IL 62901, USA"],"affiliations":[{"raw_affiliation_string":"College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China","institution_ids":["https://openalex.org/I101479585"]},{"raw_affiliation_string":"Department of Geography and Environmental Resources, College of Liberal Arts, Southern Illinois University Carbondale (SIUC), Carbondale, IL 62901, USA","institution_ids":["https://openalex.org/I110378019"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5103471098","display_name":"Yueming Hu","orcid":null},"institutions":[{"id":"https://openalex.org/I101479585","display_name":"South China Agricultural University","ror":"https://ror.org/05v9jqt67","country_code":"CN","type":"education","lineage":["https://openalex.org/I101479585"]},{"id":"https://openalex.org/I116265982","display_name":"Qinghai University","ror":"https://ror.org/05h33bt13","country_code":"CN","type":"education","lineage":["https://openalex.org/I116265982"]},{"id":"https://openalex.org/I211433327","display_name":"Ministry of Natural Resources","ror":"https://ror.org/02kxqx159","country_code":"CN","type":"government","lineage":["https://openalex.org/I211433327","https://openalex.org/I4210127390"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Yueming Hu","raw_affiliation_strings":["College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China","College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China","Guangdong Province Engineering Research Center for Land Information Technology, South China, Agricultural University, Guangzhou 510642, China","Guangdong Provincial Key Laboratory of Land Use and Consolidation, South China Agricultural University, Guangzhou 510642, China","Key Laboratory of Construction Land Transformation, Ministry of Land and Resources, South China Agricultural University, Guangzhou 510642, China"],"affiliations":[{"raw_affiliation_string":"College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China","institution_ids":["https://openalex.org/I116265982"]},{"raw_affiliation_string":"College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China","institution_ids":["https://openalex.org/I101479585"]},{"raw_affiliation_string":"Guangdong Province Engineering Research Center for Land Information Technology, South China, Agricultural University, Guangzhou 510642, China","institution_ids":["https://openalex.org/I101479585"]},{"raw_affiliation_string":"Guangdong Provincial Key Laboratory of Land Use and Consolidation, South China Agricultural University, Guangzhou 510642, China","institution_ids":["https://openalex.org/I101479585"]},{"raw_affiliation_string":"Key Laboratory of Construction Land Transformation, Ministry of Land and Resources, South China Agricultural University, Guangzhou 510642, China","institution_ids":["https://openalex.org/I211433327","https://openalex.org/I101479585"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5103471098"],"corresponding_institution_ids":["https://openalex.org/I101479585","https://openalex.org/I116265982","https://openalex.org/I211433327"],"apc_list":{"value":2500,"currency":"CHF","value_usd":2707},"apc_paid":{"value":2500,"currency":"CHF","value_usd":2707},"fwci":3.547,"has_fulltext":true,"cited_by_count":79,"citation_normalized_percentile":{"value":0.92225986,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":100},"biblio":{"volume":"11","issue":"12","first_page":"1464","last_page":"1464"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10770","display_name":"Soil Geostatistics and Mapping","score":0.9988999962806702,"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"}},"topics":[{"id":"https://openalex.org/T10770","display_name":"Soil Geostatistics and Mapping","score":0.9988999962806702,"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"}},{"id":"https://openalex.org/T12157","display_name":"Geochemistry and Geologic Mapping","score":0.9987999796867371,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10689","display_name":"Remote-Sensing Image Classification","score":0.9954000115394592,"subfield":{"id":"https://openalex.org/subfields/2214","display_name":"Media Technology"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/hyperspectral-imaging","display_name":"Hyperspectral imaging","score":0.8717368841171265},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.6359535455703735},{"id":"https://openalex.org/keywords/water-content","display_name":"Water content","score":0.5988497734069824},{"id":"https://openalex.org/keywords/soil-science","display_name":"Soil science","score":0.4859734773635864},{"id":"https://openalex.org/keywords/soil-water","display_name":"Soil water","score":0.48120787739753723},{"id":"https://openalex.org/keywords/soil-test","display_name":"Soil test","score":0.44295722246170044},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.3929745554924011},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.11941266059875488}],"concepts":[{"id":"https://openalex.org/C159078339","wikidata":"https://www.wikidata.org/wiki/Q959005","display_name":"Hyperspectral imaging","level":2,"score":0.8717368841171265},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.6359535455703735},{"id":"https://openalex.org/C24939127","wikidata":"https://www.wikidata.org/wiki/Q373499","display_name":"Water content","level":2,"score":0.5988497734069824},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.4859734773635864},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.48120787739753723},{"id":"https://openalex.org/C50516716","wikidata":"https://www.wikidata.org/wiki/Q877107","display_name":"Soil test","level":3,"score":0.44295722246170044},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.3929745554924011},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.11941266059875488},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/rs11121464","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs11121464","pdf_url":"https://www.mdpi.com/2072-4292/11/12/1464/pdf?version=1561034939","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"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":"Remote Sensing","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:8215a7ee45a848bf8bc439f472648605","is_oa":true,"landing_page_url":"https://doaj.org/article/8215a7ee45a848bf8bc439f472648605","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":"Remote Sensing, Vol 11, Iss 12, p 1464 (2019)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2072-4292/11/12/1464/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/rs11121464","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":"Remote Sensing; Volume 11; Issue 12; Pages: 1464","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/rs11121464","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs11121464","pdf_url":"https://www.mdpi.com/2072-4292/11/12/1464/pdf?version=1561034939","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"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":"Remote Sensing","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/15","display_name":"Life in Land","score":0.7200000286102295}],"awards":[{"id":"https://openalex.org/G4700273654","display_name":null,"funder_award_id":"2016YFD0800301","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"},{"id":"https://openalex.org/G8114646031","display_name":null,"funder_award_id":"2016Y","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"}],"funders":[{"id":"https://openalex.org/F4320335777","display_name":"National Key Research and Development Program of China","ror":null}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2951969386.pdf","grobid_xml":"https://content.openalex.org/works/W2951969386.grobid-xml"},"referenced_works_count":56,"referenced_works":["https://openalex.org/W95273134","https://openalex.org/W1582921860","https://openalex.org/W1596717185","https://openalex.org/W1963863308","https://openalex.org/W1968431203","https://openalex.org/W1971911208","https://openalex.org/W1980053822","https://openalex.org/W1984100396","https://openalex.org/W1985931804","https://openalex.org/W1986109834","https://openalex.org/W1991039337","https://openalex.org/W1993589081","https://openalex.org/W1993748934","https://openalex.org/W1999048942","https://openalex.org/W2003213495","https://openalex.org/W2008295896","https://openalex.org/W2013290860","https://openalex.org/W2025857348","https://openalex.org/W2058311689","https://openalex.org/W2058791926","https://openalex.org/W2067558695","https://openalex.org/W2080545724","https://openalex.org/W2092310951","https://openalex.org/W2094288177","https://openalex.org/W2129016611","https://openalex.org/W2141425024","https://openalex.org/W2144400012","https://openalex.org/W2144405000","https://openalex.org/W2156665896","https://openalex.org/W2177772562","https://openalex.org/W2391888708","https://openalex.org/W2395175464","https://openalex.org/W2400549352","https://openalex.org/W2439347252","https://openalex.org/W2462459885","https://openalex.org/W2587369937","https://openalex.org/W2589340876","https://openalex.org/W2743566546","https://openalex.org/W2752433190","https://openalex.org/W2780625821","https://openalex.org/W2808585293","https://openalex.org/W2883827111","https://openalex.org/W2890314012","https://openalex.org/W2901340266","https://openalex.org/W2904796016","https://openalex.org/W2908994269","https://openalex.org/W2920846280","https://openalex.org/W4388284198","https://openalex.org/W6642636474","https://openalex.org/W6649094138","https://openalex.org/W6681250339","https://openalex.org/W6712095942","https://openalex.org/W6718788823","https://openalex.org/W6733296704","https://openalex.org/W6734101710","https://openalex.org/W6752544680"],"related_works":["https://openalex.org/W2008804768","https://openalex.org/W2108512031","https://openalex.org/W2063755384","https://openalex.org/W2048409327","https://openalex.org/W2153306223","https://openalex.org/W2997015357","https://openalex.org/W2390117385","https://openalex.org/W2123825282","https://openalex.org/W2361720056","https://openalex.org/W1977273908"],"abstract_inverted_index":{"Quickly":[0],"and":[1,15,41,94,121,158,199,208,221,226,250,276,293,309,316,318,343,353,417,451],"efficiently":[2],"monitoring":[3],"soil":[4,42,57,68,92,116,125,138,143,172,218,271,296,313,332,365,389],"heavy":[5,20,65,126,173,215,290,366,395,434],"metal":[6,21,127,174,367],"content":[7,22,145,175,213,243,288,334,368,393,432],"is":[8,28,48],"crucial":[9],"for":[10,16,266,278],"protecting":[11],"the":[12,36,46,62,95,132,152,160,164,168,192,212,227,239,242,253,267,279,283,287,303,312,321,325,328,338,355,359,364,370,374,392,398,407,415,423,427,431,439],"natural":[13],"environment":[14],"human":[17],"health.":[18],"Estimating":[19],"in":[23,67,167,217,223,295,401,405,414,436],"soils":[24],"using":[25,69,88,109,180,373],"hyperspectral":[26,73,89,181],"data":[27,90,120],"a":[29,52,76,85,177,196,387],"cost-efficient":[30],"method":[31,87,204],"but":[32,438],"challenging":[33],"due":[34],"to":[35,50,60,136,170,210,300,362,429],"effects":[37],"of":[38,45,64,124,131,134,154,162,214,230,244,264,270,289,307,327,340,357,394,433,442,449],"complex":[39],"landscapes":[40],"properties.":[43],"One":[44],"challenges":[47],"how":[49],"make":[51],"lab-derived":[53],"model":[54,441],"based":[55,237],"on":[56,238],"samples":[58,93,272,390],"applicable":[59],"mapping":[61],"contents":[63],"metals":[66,216,291,396,435],"air-borne":[70],"or":[71],"space-borne":[72],"imagery":[74],"at":[75,176,282,311,320,369],"regional":[77,178,284,322,371],"scale.":[78,323],"For":[79],"this":[80,102],"purpose,":[81],"our":[82],"study":[83,420],"proposed":[84,254],"novel":[86],"from":[91,114,273],"HuanJing-1A":[96],"(HJ-1A)":[97],"HyperSpectral":[98],"Imager":[99],"(HSI).":[100],"In":[101,377],"method,":[103,255],"estimation":[104,440],"models":[105,165,361],"were":[106,188,297,385,411],"first":[107],"developed":[108,166],"optimal":[110,184],"relevant":[111,185],"spectral":[112,117,139,186],"variables":[113,187],"dry":[115],"reflectance":[118,140],"(DSSR)":[119],"field":[122],"observations":[123],"content.":[128],"The":[129,183,233],"relationship":[130,326],"ratio":[133,330],"DSSR":[135,155,350],"moisture":[137,144,333],"(MSSR)":[141],"with":[142,156,195,256,302,331,351,391],"was":[146,205,380,444],"then":[147],"derived,":[148],"which":[149,348],"built":[150],"up":[151],"linkage":[153],"MSSR":[157,352],"provided":[159,354],"potential":[161,428],"applying":[163,358],"laboratory":[169],"map":[171,363,430],"scale":[179,372],"imagery.":[182],"obtained":[189],"by":[190,252],"combining":[191],"Boruta":[193],"algorithm":[194],"stepwise":[197],"regression":[198],"variance":[200],"inflation":[201],"factor.":[202],"This":[203,419],"developed,":[206],"validated,":[207],"applied":[209],"estimate":[211],"(As,":[219],"Cd,":[220],"Hg)":[222],"Guangdong,":[224],"China,":[225],"Conghua":[228,280,406],"district":[229,281],"Guangzhou":[231],"city.":[232],"results":[234],"showed":[235],"that":[236,382,422],"validation":[240],"datasets,":[241],"Cd":[245,443],"could":[246],"be":[247],"reliably":[248],"estimated":[249],"mapped":[251],"relative":[257,304],"root":[258],"mean":[259],"square":[260],"error":[261],"(RMSE)":[262],"values":[263,306],"17.41%":[265],"point":[268],"measurements":[269],"Guangdong":[274,402],"province":[275],"17.10%":[277],"scale,":[285],"while":[286,404],"As":[292,450],"Hg":[294],"relatively":[298],"difficult":[299],"predict":[301],"RMSE":[305],"32.27%":[308],"28.72%":[310],"sample":[314],"level":[315],"51.55%":[317],"36.34%":[319],"Moreover,":[324],"DSSR/MSSR":[329],"varied":[335],"greatly":[336],"before":[337],"wavelength":[339],"1029":[341],"nm":[342],"became":[344],"stable":[345],"after":[346],"that,":[347],"linked":[349],"possibility":[356],"DSSR-based":[360],"HJ-1A":[375],"images.":[376],"addition,":[378],"it":[379],"found":[381],"overall":[383],"there":[384],"only":[386],"few":[388],"exceeding":[397],"health":[399],"standards":[400],"province,":[403],"seriously":[408],"polluted":[409],"areas":[410],"mainly":[412],"distributed":[413],"cities":[416],"croplands.":[418],"implies":[421],"new":[424],"approach":[425],"provides":[426],"soil,":[437],"more":[445],"accurate":[446],"than":[447],"those":[448],"Hg.":[452]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":14},{"year":2024,"cited_by_count":20},{"year":2023,"cited_by_count":11},{"year":2022,"cited_by_count":12},{"year":2021,"cited_by_count":10},{"year":2020,"cited_by_count":6},{"year":2019,"cited_by_count":3}],"updated_date":"2026-04-15T08:11:43.952461","created_date":"2019-06-27T00:00:00"}
