Article(id=1320880709921780721, tenantId=1146029695717560320, journalId=1260987677001138203, issueId=1320880625310085394, articleNumber=null, orderNo=null, doi=10.13386/j.issn1002-0306.2025080105, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1754841600000, receivedDateStr=2025-08-11, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1792852102021, onlineDateStr=2026-10-24, pubDate=1788192000000, pubDateStr=2026-09-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792852102021, onlineIssueDateStr=2026-10-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792852102021, creator=13701087609, updateTime=1792852102021, updator=13701087609, issue=Issue{id=1320880625310085394, tenantId=1146029695717560320, journalId=1260987677001138203, year='2026', volume='47', issue='17', pageStart='1', pageEnd='596', issueExtLink='null', onlineDate='null', pubDate='1788192000000', pubDateStr='2026-09-01', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792852081848, creator='13701087609', updateTime=1792852081848, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=386, endPage=394, ext={EN=ArticleExt(id=1320880710110524402, articleId=1320880709921780721, tenantId=1146029695717560320, journalId=1260987677001138203, language=EN, title=Geographical Traceability of Yunnan Sun-dried Green Tea Based on the Combination of Mineral Elements and Stable Isotopes, columnId=1261343843585241413, journalTitle=Science and Technology of Food Industry, columnName=Analysis and Determination, runingTitle=null, highlight=null, articleAbstract=
To investigate the correlation between growing environment and stable isotopes and mineral elements in 80 Yunnan large-leaf sun-dried green tea samples (from 4 production areas: Ning'er County, Lianghe County, Simao District and Jinghong City, Yunnan Province), 24 trace elements, 14 rare earth elements and 5 stable isotopes were analyzed and determined by using Elemental Analyzer-Isotope Ratio Mass Spectrometry (EA-IRMS) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). To explore the feasibility of discriminating large-leaf sun-dried green tea from different geographical origins, multiple multivariate statistical methods were employed, including analysis of variance (ANOVA), principal component analysis (PCA), orthogonal partial least squares-discriminant analysis (OPLS-DA), and linear discriminant analysis (LDA). Tea from Lianghe County recorded a significantly higher total mineral element content compared to the other three regions (P<0.05). PCA extracted seven principal components with a total cumulative variance contribution rate of 80.831%. An OPLS-DA model provided effective differentiation of samples from the 4 different regions, from which 15 key variables with variable importance in projection (VIP) scores >1 were screened (δ2H, δ18O, Rb, Al, Tl, Cs, δ34S, Mn, Cu, Cd, Ga, Ba, Fe, As, Sr). Subsequently, these markers were subjected to Fisher's LDA. This model achieved 100.0% correct discrimination and a 92.5% cross-validation rate, demonstrating its robust capability for origin traceability of Yunnan large-leaf sun-dried green tea. This study demonstrated the feasibility of tracing the geographical origin of Yunnan large-leaf sun-dried green tea through mineral element and stable isotope analysis. The findings provided a research foundation for origin discrimination at a more accurate geographical scale and for the protection of geographical indication products in Yunnan.
, authors=Qixin ZOU
1, 2, Xinyu LI
1, Zeli CHEN
1, Qian LI
1, Benlin YIN
1, Xuefeng WANG
2, Xingyong LIU
1, *, Jinliang SHAO
1, *, authorsList=Qixin ZOU, Xinyu LI, Zeli CHEN, Qian LI, Benlin YIN, Xuefeng WANG, Xingyong LIU, Jinliang SHAO, authorCompany=null, correspAuthors=Xingyong LIU, Jinliang SHAO, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2026 Science and Technology of Food Industry. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1320880712681632763, articleId=1320880709921780721, tenantId=1146029695717560320, journalId=1260987677001138203, language=CN, title=基于矿质元素与稳定同位素联用的云南晒青茶产地溯源, columnId=1261343846139572559, journalTitle=食品工业科技, columnName=分析检测, runingTitle=null, highlight=null, articleAbstract=
为研究云南大叶种晒青茶与产地环境的稳定同位素和矿质元素相关性,采用元素分析同位素质谱联用仪(Elemental Analysis-Isotope Ratio Mass Spectrometry,EA-IRMS)和电感耦合等离子体质谱仪(Inductively Coupled Plasma Mass Spectrometry,ICP-MS)对云南省宁洱县、梁河县、思茅区、景洪市四个产地80个茶叶样品的24种微量元素、14种稀土元素和5种稳定同位素进行了分析测定。结合单因素方差分析(analysis of variance,ANOVA)、主成分分析(principle components analysis,PCA)、正交偏最小二乘判别分析(orthogonal partial least squares-discriminant analysis,OPLS-DA)、线性判别分析(linear discriminant analysis,LDA)等多元统计分析方法探讨不同产地大叶种晒青茶判别的可行性。结果表明,梁河县的茶叶矿质元素总量显著高于其他三地(P<0.05)。PCA提取的7个主成分方差总贡献率为80.831%,基于OPLS-DA建立的判别模型,能够对4个县(市/区)茶叶的产地进行较好的区分,同时筛选出变量重要性投影(variable importance for the projection,VIP)值大于1的15个特征差异指标(δ2H、δ18O、Rb、Al、Tl、Cs、δ34S、Mn、Cu、Cd、Ga、Ba、Fe、As、Sr)并用于Fisher线性判别分析,构建的判别模型判别正确率为100.0%,交叉验证率为92.5%,基本实现了云南大叶种晒青茶的产地判别。本研究结果可通过矿质元素和稳定同位素对云南大叶种晒青茶产地溯源,为地理尺度更小的云南茶叶产地判别和地理标志产品保护提供研究思路。
, authors=邹启鑫
1, 2, 李新宇
1, 陈泽历
1, 李倩
1, 尹本林
1, 王雪峰
2, 刘兴勇
1, *, 邵金良
1, *, authorsList=邹启鑫, 李新宇, 陈泽历, 李倩, 尹本林, 王雪峰, 刘兴勇, 邵金良, authorCompany=null, correspAuthors=刘兴勇, 邵金良, authorNote=
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1Institute of Agriculture Quality Standards & Testing Technique, Yunnan Academy of Agricultural Science, Kunming 650205, China
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1云南省农业科学院质量标准与检测技术研究所,云南昆明 650205
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Fragariaananassa Duch. origin based on stable isotope and elemental technology[J]. Journal of Food Safety & Quality, 2025, 16(3): 162−168.], articleTitle=null, refAbstract=null), Reference(id=1320881029846516621, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=38, rfOrder=57, authorNames=null, journalName=null, refType=null, unstructuredReference=YU Hanbing, GUO Yang, LI An, et al. Traceability of
Fragariaananassa Duch. origin based on stable isotope and elemental technology[J]. Journal of Food Safety & Quality, 2025, 16(3): 162−168., articleTitle=null, refAbstract=null), Reference(id=1320881029922014094, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=39, rfOrder=58, authorNames=null, journalName=null, refType=null, unstructuredReference=LIU Xiaohan, ZHAO Yan, MU Jian, et al. Determination of geographical origin of concentrated apple juice through analysis of stable isotopic and mineral elemental fingerprints: Preliminary results[J]. Journal of the Science of Food and Agriculture, 2021, 101(9): 3795−3803., articleTitle=null, refAbstract=null), Reference(id=1320881029980734351, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=40, rfOrder=59, authorNames=null, journalName=null, refType=null, unstructuredReference=刘宏程, 林昕, 和丽忠, 等. 基于稀土元素含量的普洱茶产地识别研究[J]. 茶叶科学, 2014, 34(5): 451−457. [LIU Hongcheng, LIN Xin, HE Lizhong, et al. The discrimination of Pu′er tea according to region of origin using the content of heavy rare-earth elements[J]. Journal of Tea Science, 2014, 34(5): 451−457.], articleTitle=null, refAbstract=null), Reference(id=1320881030060426128, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=40, rfOrder=60, authorNames=null, journalName=null, refType=null, unstructuredReference=LIU Hongcheng, LIN Xin, HE Lizhong, et al. The discrimination of Pu′er tea according to region of origin using the content of heavy rare-earth elements[J]. Journal of Tea Science, 2014, 34(5): 451−457., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1320881008690447105, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, xref=1, ext=[AuthorCompanyExt(id=1320881008698835714, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, companyId=1320881008690447105, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1Institute of Agriculture Quality Standards & Testing Technique, Yunnan Academy of Agricultural Science, Kunming 650205, China), AuthorCompanyExt(id=1320881008711418627, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, companyId=1320881008690447105, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1云南省农业科学院质量标准与检测技术研究所,云南昆明 650205)]), AuthorCompany(id=1320881008770138884, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, xref=2, ext=[AuthorCompanyExt(id=1320881008778527493, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, companyId=1320881008770138884, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2Faculty of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China), AuthorCompanyExt(id=1320881008786916102, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, companyId=1320881008770138884, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2云南农业大学食品科学技术学院,云南昆明 650201)])], figs=[ArticleFig(id=1320881016823202620, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Fig.1, caption=
Heat map of correlation analysis of substances contained in tea, figureFileSmall=Rci0sCIGSx7Uq2RwPxqddw==, figureFileBig=qFu8DhyxNMCUvDI5BH6zKA==, tableContent=null), ArticleFig(id=1320881016890311485, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=图1, caption=
茶叶内含物质相关性分析热图, figureFileSmall=Rci0sCIGSx7Uq2RwPxqddw==, figureFileBig=qFu8DhyxNMCUvDI5BH6zKA==, tableContent=null), ArticleFig(id=1320881016999363390, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Fig.2, caption=
PCA score chart of tea element components from different origins, figureFileSmall=1EtZa7SA6ZosR5R4ElHWrA==, figureFileBig=u8heI4A6c+uqY3ajiJdp1A==, tableContent=null), ArticleFig(id=1320881017104220991, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=图2, caption=
不同产地茶叶元素成分PCA得分图, figureFileSmall=1EtZa7SA6ZosR5R4ElHWrA==, figureFileBig=u8heI4A6c+uqY3ajiJdp1A==, tableContent=null), ArticleFig(id=1320881017175524160, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Fig.3, caption=
OPLS-DA score (A), VIP plot (B) and model cross-validation results (C) of tea leaves from different origins, figureFileSmall=4Rwnx8ANiH6XfXyouwLnkA==, figureFileBig=4eBlSTejnNV7KWBAYDM0iA==, tableContent=null), ArticleFig(id=1320881017259410241, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=图3, caption=
不同产地茶叶的OPLS-DA得分图(A)、VIP图(B)与模型交叉验证结果(C), figureFileSmall=4Rwnx8ANiH6XfXyouwLnkA==, figureFileBig=4eBlSTejnNV7KWBAYDM0iA==, tableContent=null), ArticleFig(id=1320881017360073538, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Fig.4, caption=
Typical discriminant scatter plot, figureFileSmall=3AHcEvwKPHYE3x5/W6Eqhw==, figureFileBig=a6Q92NUwbXoA9xDnMfoZ+A==, tableContent=null), ArticleFig(id=1320881017448153923, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=图4, caption=
典型判别散点图, figureFileSmall=3AHcEvwKPHYE3x5/W6Eqhw==, figureFileBig=a6Q92NUwbXoA9xDnMfoZ+A==, tableContent=null), ArticleFig(id=1320881017532040004, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Table 1, caption=
Related information of sample collection place
, figureFileSmall=null, figureFileBig=null, tableContent=
| 地区 | 经度 | 纬度 |
|---|
| 云南省普洱市宁洱哈尼族彝族自治县(以下简称宁洱县) | 100°42′ E-101°37′ E | 22°41′ N-23°36′ N |
| 云南省德宏傣族景颇族自治州梁河县(以下简称梁河县) | 98°06′ E-98°34′ E | 24°31′ N-24°58′ N |
| 云南省普洱市思茅区(以下简称思茅区) | 100°58′ E-101°50′ E | 22°27′ N-23°06′ N |
| 云南省西双版纳傣族自治州傣族自治州景洪市(以下简称景洪市) | 100°25′ E-101°31′ E | 21°27′ N-22°36′ N |
), ArticleFig(id=1320881017603343173, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=表1, caption=
样品采集地相关信息
, figureFileSmall=null, figureFileBig=null, tableContent=
| 地区 | 经度 | 纬度 |
|---|
| 云南省普洱市宁洱哈尼族彝族自治县(以下简称宁洱县) | 100°42′ E-101°37′ E | 22°41′ N-23°36′ N |
| 云南省德宏傣族景颇族自治州梁河县(以下简称梁河县) | 98°06′ E-98°34′ E | 24°31′ N-24°58′ N |
| 云南省普洱市思茅区(以下简称思茅区) | 100°58′ E-101°50′ E | 22°27′ N-23°06′ N |
| 云南省西双版纳傣族自治州傣族自治州景洪市(以下简称景洪市) | 100°25′ E-101°31′ E | 21°27′ N-22°36′ N |
), ArticleFig(id=1320881017670452038, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Table 2, caption=
Trace element content (mg·kg−1)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素种类 | 宁洱县 | 梁河县 | 思茅区 | 景洪市 |
|---|
| Li | 0.082±0.001b | 0.169±0.001a | 0.040±0.004c | 0.064±0.003bc |
| Be | 0.004±0.000b | 0.010±0.000a | 未检出 | 0.005±0.000b |
| Al | 1.890±0.101a | 1.642±0.128b | 0.715±0.141c | 0.815±0.019c |
| Ti | 6.495±1.852c | 14.151±1.470a | 3.950±0.505d | 8.625±0.522b |
| V | 0.083±0.001ab | 0.111±0.005a | 0.072±0.031bc | 0.043±0.003c |
| Cr | 0.185±0.007c | 0.926±0.064a | 0.118±0.001c | 0.422±0.074b |
| Mn | 1.410±0.206a | 1.098±0.071b | 0.495±0.064c | 0.710±0.040c |
| Fe | 78.70±8.833b | 115.816±6.550a | 28.495±1.640c | 87.790±3.568b |
| Co | 0.312±0.001a | 0.334±0.079a | 0.081±0.001b | 0.117±0.001b |
| Ni | 4.920±0.207b | 107.954±5.924a | 4.090±0.138b | 7.590±0.728b |
| Cu | 12.495±2.173b | 13.093±2.473b | 11.985±1.674b | 15.570±1.277a |
| Zn | 26.385±2.233b | 30.383±3.944ab | 32.920±3.496a | 35.010±4.146a |
| Ga | 1.680±0.175a | 1.392±0.042a | 0.730±0.075b | 0.720±0.007b |
| As | 0.029±0.008a | 0.016±0.009b | 0.012±0.002bc | 0.005±0.001c |
| Se | 未检出 | 0.395±0.007a | 0.011±0.001b | 0.006±0.000b |
| Rb | 53.215±5.906c | 154.730±9.513a | 58.725±4.540c | 120.845±3.292b |
| Sr | 0.024±0.005a | 0.019±0.000a | 0.009±0.003b | 0.009±0.002b |
| Y | 0.300±0.006b | 0.470±0.043a | 0.029±0.002c | 0.079±0.009c |
| Mo | 未检出 | 122.992±10.281a | 35.520±1.049b | 未检出 |
| Cd | 0.056±0.004a | 0.029±0.006b | 0.026±0.001b | 0.025±0.003b |
| Cs | 0.578±0.009c | 1.127±0.074b | 0.315±0.024c | 1.627±0.030a |
| Ba | 30.605±3.889a | 25.803±2.275a | 12.565±2.931b | 14.840±3.183b |
| Tl | 0.054±0.003b | 0.134±0.000a | 0.029±0.001b | 0.172±0.015a |
| Pb | 0.096±0.003b | 0.202±0.002a | 0.021±0.002c | 0.031±0.008c |
| 总含量 | 219.63±10.282b | 593.009±14.729a | 190.953±9.565c | 295.12±8.671b |
), ArticleFig(id=1320881017745949511, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=表2, caption=
微量元素含量(mg·kg−1)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素种类 | 宁洱县 | 梁河县 | 思茅区 | 景洪市 |
|---|
| Li | 0.082±0.001b | 0.169±0.001a | 0.040±0.004c | 0.064±0.003bc |
| Be | 0.004±0.000b | 0.010±0.000a | 未检出 | 0.005±0.000b |
| Al | 1.890±0.101a | 1.642±0.128b | 0.715±0.141c | 0.815±0.019c |
| Ti | 6.495±1.852c | 14.151±1.470a | 3.950±0.505d | 8.625±0.522b |
| V | 0.083±0.001ab | 0.111±0.005a | 0.072±0.031bc | 0.043±0.003c |
| Cr | 0.185±0.007c | 0.926±0.064a | 0.118±0.001c | 0.422±0.074b |
| Mn | 1.410±0.206a | 1.098±0.071b | 0.495±0.064c | 0.710±0.040c |
| Fe | 78.70±8.833b | 115.816±6.550a | 28.495±1.640c | 87.790±3.568b |
| Co | 0.312±0.001a | 0.334±0.079a | 0.081±0.001b | 0.117±0.001b |
| Ni | 4.920±0.207b | 107.954±5.924a | 4.090±0.138b | 7.590±0.728b |
| Cu | 12.495±2.173b | 13.093±2.473b | 11.985±1.674b | 15.570±1.277a |
| Zn | 26.385±2.233b | 30.383±3.944ab | 32.920±3.496a | 35.010±4.146a |
| Ga | 1.680±0.175a | 1.392±0.042a | 0.730±0.075b | 0.720±0.007b |
| As | 0.029±0.008a | 0.016±0.009b | 0.012±0.002bc | 0.005±0.001c |
| Se | 未检出 | 0.395±0.007a | 0.011±0.001b | 0.006±0.000b |
| Rb | 53.215±5.906c | 154.730±9.513a | 58.725±4.540c | 120.845±3.292b |
| Sr | 0.024±0.005a | 0.019±0.000a | 0.009±0.003b | 0.009±0.002b |
| Y | 0.300±0.006b | 0.470±0.043a | 0.029±0.002c | 0.079±0.009c |
| Mo | 未检出 | 122.992±10.281a | 35.520±1.049b | 未检出 |
| Cd | 0.056±0.004a | 0.029±0.006b | 0.026±0.001b | 0.025±0.003b |
| Cs | 0.578±0.009c | 1.127±0.074b | 0.315±0.024c | 1.627±0.030a |
| Ba | 30.605±3.889a | 25.803±2.275a | 12.565±2.931b | 14.840±3.183b |
| Tl | 0.054±0.003b | 0.134±0.000a | 0.029±0.001b | 0.172±0.015a |
| Pb | 0.096±0.003b | 0.202±0.002a | 0.021±0.002c | 0.031±0.008c |
| 总含量 | 219.63±10.282b | 593.009±14.729a | 190.953±9.565c | 295.12±8.671b |
), ArticleFig(id=1320881017813058376, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Table 3, caption=
Rare earth element content (μg·kg−1)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素种类 | 宁洱县 | 梁河县 | 思茅区 | 景洪市 |
|---|
| La | 189.425±8.817b | 671.390±15.657a | 81.695±5.603c | 78.940±5.295c |
| Ce | 332.850±14.490b | 710.786±24.382a | 148.68±7.037c | 151.260±7.399c |
| Pr | 46.455±2.780b | 119.864±7.972a | 14.970±2.183c | 13.710±1.767c |
| Nd | 189.925±9.883b | 461.613±20.958a | 61.105±1.926c | 56.145±4.085c |
| Sm | 48.005±1.456b | 93.454±6.762a | 10.985±0.803c | 1.975±0.004c |
| Eu | 12.520±3.850b | 17.958±2.002a | 3.140±0.252c | 2.160±0.109c |
| Gd | 55.005±6.941b | 73.081±3.546a | 13.235±2.619c | 13.775±2.469c |
| Tb | 8.325±0.709b | 14.368±3.504a | 1.765±0.795c | 0.550±0.006c |
| Dy | 51.850±7.284b | 80.934±7.644a | 10.880±1.515c | 17.095±1.842c |
| Ho | 11.105±1.749b | 18.621±3.702a | 2.105±0.021c | 3.715±0.451c |
| Er | 30.345±2.256b | 58.453±2.830a | 6.175±0.652c | 9.095±2.628c |
| Tm | 4.720±0.595b | 10.063±2.806a | 0.995±0.107c | 1.860±0.002c |
| Yb | 47.920±0.943b | 87.221±4.345a | 6.960±1.106c | 10.635±1.903c |
| Lu | 6.700±0.838b | 13.173±4.267a | 1.085±0.008c | 2.310±0.084c |
| 总含量 | 1035.150±26.082b | 2430.979±47.156a | 363.775±12.793c | 363.225±16.731c |
), ArticleFig(id=1320881017880167241, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=表3, caption=
稀土元素含量(μg·kg−1)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素种类 | 宁洱县 | 梁河县 | 思茅区 | 景洪市 |
|---|
| La | 189.425±8.817b | 671.390±15.657a | 81.695±5.603c | 78.940±5.295c |
| Ce | 332.850±14.490b | 710.786±24.382a | 148.68±7.037c | 151.260±7.399c |
| Pr | 46.455±2.780b | 119.864±7.972a | 14.970±2.183c | 13.710±1.767c |
| Nd | 189.925±9.883b | 461.613±20.958a | 61.105±1.926c | 56.145±4.085c |
| Sm | 48.005±1.456b | 93.454±6.762a | 10.985±0.803c | 1.975±0.004c |
| Eu | 12.520±3.850b | 17.958±2.002a | 3.140±0.252c | 2.160±0.109c |
| Gd | 55.005±6.941b | 73.081±3.546a | 13.235±2.619c | 13.775±2.469c |
| Tb | 8.325±0.709b | 14.368±3.504a | 1.765±0.795c | 0.550±0.006c |
| Dy | 51.850±7.284b | 80.934±7.644a | 10.880±1.515c | 17.095±1.842c |
| Ho | 11.105±1.749b | 18.621±3.702a | 2.105±0.021c | 3.715±0.451c |
| Er | 30.345±2.256b | 58.453±2.830a | 6.175±0.652c | 9.095±2.628c |
| Tm | 4.720±0.595b | 10.063±2.806a | 0.995±0.107c | 1.860±0.002c |
| Yb | 47.920±0.943b | 87.221±4.345a | 6.960±1.106c | 10.635±1.903c |
| Lu | 6.700±0.838b | 13.173±4.267a | 1.085±0.008c | 2.310±0.084c |
| 总含量 | 1035.150±26.082b | 2430.979±47.156a | 363.775±12.793c | 363.225±16.731c |
), ArticleFig(id=1320881017972441930, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Table 4, caption=
Stable isotope ratio (‰)
, figureFileSmall=null, figureFileBig=null, tableContent=
同位素 种类 | 宁洱县 | 梁河县 | 思茅区 | 景洪市 |
|---|
| δ13C | −26.375±0.663b | −27.010±0.828c | −25.700±0.993a | −26.310±0.442b |
| δ15N | 3.505±0.585a | 2.355±0.832b | 3.290±0.795a | 3.255±0.398a |
| δ2H | −49.250±3.129c | −45.570±3.437b | −29.925±3.628a | −68.570±3.673d |
| δ18O | 21.870±0.296c | 22.910±0.757b | 23.450±0.325a | 18.355±0.296d |
| δ34S | 7.815±0.118a | 4.485±0.811b | 7.235±0.286a | 7.530±0.310a |
), ArticleFig(id=1320881018039550795, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=表4, caption=
稳定同位素比值(‰)
, figureFileSmall=null, figureFileBig=null, tableContent=
同位素 种类 | 宁洱县 | 梁河县 | 思茅区 | 景洪市 |
|---|
| δ13C | −26.375±0.663b | −27.010±0.828c | −25.700±0.993a | −26.310±0.442b |
| δ15N | 3.505±0.585a | 2.355±0.832b | 3.290±0.795a | 3.255±0.398a |
| δ2H | −49.250±3.129c | −45.570±3.437b | −29.925±3.628a | −68.570±3.673d |
| δ18O | 21.870±0.296c | 22.910±0.757b | 23.450±0.325a | 18.355±0.296d |
| δ34S | 7.815±0.118a | 4.485±0.811b | 7.235±0.286a | 7.530±0.310a |
), ArticleFig(id=1320881018140214092, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Table 5, caption=
Results of PCA
, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素 | 主成分1 | 主成分2 | 主成分3 | 主成分4 | 主成分5 | 主成分6 | 主成分7 |
|---|
| Li | 0.151 | 0.142 | 0.108 | 0.199 | 0.025 | −0.173 | −0.010 |
| Be | 0.102 | 0.136 | −0.039 | 0.095 | −0.141 | 0.092 | 0.136 |
| Al | 0.164 | −0.162 | −0.176 | 0.114 | −0.037 | 0.092 | −0.056 |
| Ti | 0.142 | 0.267 | 0.060 | 0.165 | −0.015 | −0.225 | −0.001 |
| V | 0.080 | 0.100 | 0.241 | 0.409 | −0.064 | −0.172 | −0.055 |
| Cr | 0.135 | 0.216 | 0.119 | 0.049 | 0.237 | −0.040 | 0.039 |
| Mn | 0.105 | −0.072 | −0.115 | 0.263 | 0.141 | 0.057 | −0.183 |
| Fe | 0.130 | 0.259 | −0.054 | 0.258 | 0.019 | −0.142 | −0.121 |
| Co | 0.153 | −0.114 | −0.162 | 0.002 | 0.162 | 0.029 | −0.138 |
| Ni | 0.077 | 0.11 | 0.201 | −0.014 | −0.042 | 0.444 | −0.070 |
| Cu | −0.015 | 0.225 | −0.217 | −0.050 | 0.348 | 0.097 | −0.043 |
| Zn | −0.045 | 0.164 | 0.147 | 0.015 | 0.505 | 0.194 | 0.144 |
| Ga | 0.126 | −0.170 | −0.217 | 0.197 | 0.036 | −0.001 | 0.356 |
| As | 0.059 | −0.087 | 0.062 | 0.387 | −0.037 | −0.104 | −0.162 |
| Se | 0.114 | 0.016 | 0.019 | −0.098 | 0.379 | −0.167 | 0.207 |
| Rb | 0.096 | 0.350 | 0.067 | −0.042 | −0.033 | 0.029 | −0.110 |
| Sr | 0.121 | −0.125 | −0.146 | 0.218 | 0.050 | 0.087 | 0.241 |
| Y | 0.218 | −0.009 | −0.019 | 0.014 | −0.025 | 0.128 | −0.048 |
| Mo | 0.060 | 0.101 | 0.250 | −0.001 | 0.257 | 0.386 | 0.020 |
| Cd | 0.046 | −0.166 | −0.172 | 0.180 | 0.119 | 0.243 | −0.340 |
| Cs | 0.024 | 0.292 | −0.236 | −0.104 | −0.182 | 0.061 | 0.074 |
| Ba | 0.127 | −0.145 | −0.246 | 0.192 | 0.030 | −0.004 | 0.363 |
| Tl | 0.034 | 0.308 | −0.223 | −0.054 | −0.200 | −0.040 | 0.145 |
| Pb | 0.172 | 0.132 | 0.148 | 0.217 | −0.015 | −0.050 | −0.071 |
| La | 0.203 | −0.002 | 0.036 | −0.174 | 0.132 | −0.155 | 0.110 |
| Ce | 0.212 | −0.003 | 0.024 | −0.116 | 0.010 | −0.111 | 0.035 |
| Pr | 0.214 | −0.024 | 0.026 | −0.132 | 0.081 | −0.110 | 0.087 |
| Nd | 0.215 | −0.025 | 0.024 | −0.116 | 0.078 | −0.094 | 0.081 |
| Sm | 0.213 | −0.081 | 0.023 | −0.094 | 0.010 | 0.045 | 0.062 |
| Eu | 0.204 | −0.143 | −0.062 | −0.079 | 0.067 | −0.041 | 0.071 |
| Gd | 0.212 | −0.098 | −0.044 | 0.011 | 0.018 | 0.017 | −0.049 |
| Tb | 0.219 | −0.070 | 0.043 | −0.061 | −0.013 | 0.087 | −0.058 |
| Dy | 0.220 | −0.033 | −0.031 | −0.050 | −0.085 | 0.090 | −0.057 |
| Ho | 0.221 | −0.017 | −0.024 | −0.062 | −0.078 | 0.078 | −0.075 |
| Er | 0.219 | 0.003 | 0.024 | −0.090 | −0.105 | 0.093 | −0.065 |
| Tm | 0.214 | 0.029 | 0.014 | −0.103 | −0.139 | 0.087 | 0.000 |
| Yb | 0.212 | 0.002 | 0.028 | −0.063 | −0.152 | 0.152 | −0.078 |
| Lu | 0.208 | 0.023 | 0.014 | −0.094 | −0.147 | 0.150 | −0.058 |
| δ13C | −0.113 | −0.012 | 0.161 | 0.110 | −0.105 | 0.176 | 0.301 |
| δ15N | −0.074 | −0.153 | −0.174 | −0.032 | 0.222 | −0.100 | −0.367 |
| δ2H | 0.011 | −0.238 | 0.415 | 0.016 | −0.037 | 0.027 | 0.072 |
| δ18O | 0.076 | −0.271 | 0.354 | −0.025 | −0.033 | −0.153 | 0.037 |
| δ34S | −0.134 | −0.003 | −0.049 | 0.282 | −0.046 | 0.338 | 0.189 |
| 方差贡献率 | 43.879 | 11.257 | 7.176 | 6.548 | 68.860 | 3.988 | 3.261 |
| 累计贡献率 | 43.879 | 55.136 | 62.312 | 4.722 | 73.582 | 77.570 | 80.831 |
), ArticleFig(id=1320881018232488781, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=表5, caption=
PCA结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素 | 主成分1 | 主成分2 | 主成分3 | 主成分4 | 主成分5 | 主成分6 | 主成分7 |
|---|
| Li | 0.151 | 0.142 | 0.108 | 0.199 | 0.025 | −0.173 | −0.010 |
| Be | 0.102 | 0.136 | −0.039 | 0.095 | −0.141 | 0.092 | 0.136 |
| Al | 0.164 | −0.162 | −0.176 | 0.114 | −0.037 | 0.092 | −0.056 |
| Ti | 0.142 | 0.267 | 0.060 | 0.165 | −0.015 | −0.225 | −0.001 |
| V | 0.080 | 0.100 | 0.241 | 0.409 | −0.064 | −0.172 | −0.055 |
| Cr | 0.135 | 0.216 | 0.119 | 0.049 | 0.237 | −0.040 | 0.039 |
| Mn | 0.105 | −0.072 | −0.115 | 0.263 | 0.141 | 0.057 | −0.183 |
| Fe | 0.130 | 0.259 | −0.054 | 0.258 | 0.019 | −0.142 | −0.121 |
| Co | 0.153 | −0.114 | −0.162 | 0.002 | 0.162 | 0.029 | −0.138 |
| Ni | 0.077 | 0.11 | 0.201 | −0.014 | −0.042 | 0.444 | −0.070 |
| Cu | −0.015 | 0.225 | −0.217 | −0.050 | 0.348 | 0.097 | −0.043 |
| Zn | −0.045 | 0.164 | 0.147 | 0.015 | 0.505 | 0.194 | 0.144 |
| Ga | 0.126 | −0.170 | −0.217 | 0.197 | 0.036 | −0.001 | 0.356 |
| As | 0.059 | −0.087 | 0.062 | 0.387 | −0.037 | −0.104 | −0.162 |
| Se | 0.114 | 0.016 | 0.019 | −0.098 | 0.379 | −0.167 | 0.207 |
| Rb | 0.096 | 0.350 | 0.067 | −0.042 | −0.033 | 0.029 | −0.110 |
| Sr | 0.121 | −0.125 | −0.146 | 0.218 | 0.050 | 0.087 | 0.241 |
| Y | 0.218 | −0.009 | −0.019 | 0.014 | −0.025 | 0.128 | −0.048 |
| Mo | 0.060 | 0.101 | 0.250 | −0.001 | 0.257 | 0.386 | 0.020 |
| Cd | 0.046 | −0.166 | −0.172 | 0.180 | 0.119 | 0.243 | −0.340 |
| Cs | 0.024 | 0.292 | −0.236 | −0.104 | −0.182 | 0.061 | 0.074 |
| Ba | 0.127 | −0.145 | −0.246 | 0.192 | 0.030 | −0.004 | 0.363 |
| Tl | 0.034 | 0.308 | −0.223 | −0.054 | −0.200 | −0.040 | 0.145 |
| Pb | 0.172 | 0.132 | 0.148 | 0.217 | −0.015 | −0.050 | −0.071 |
| La | 0.203 | −0.002 | 0.036 | −0.174 | 0.132 | −0.155 | 0.110 |
| Ce | 0.212 | −0.003 | 0.024 | −0.116 | 0.010 | −0.111 | 0.035 |
| Pr | 0.214 | −0.024 | 0.026 | −0.132 | 0.081 | −0.110 | 0.087 |
| Nd | 0.215 | −0.025 | 0.024 | −0.116 | 0.078 | −0.094 | 0.081 |
| Sm | 0.213 | −0.081 | 0.023 | −0.094 | 0.010 | 0.045 | 0.062 |
| Eu | 0.204 | −0.143 | −0.062 | −0.079 | 0.067 | −0.041 | 0.071 |
| Gd | 0.212 | −0.098 | −0.044 | 0.011 | 0.018 | 0.017 | −0.049 |
| Tb | 0.219 | −0.070 | 0.043 | −0.061 | −0.013 | 0.087 | −0.058 |
| Dy | 0.220 | −0.033 | −0.031 | −0.050 | −0.085 | 0.090 | −0.057 |
| Ho | 0.221 | −0.017 | −0.024 | −0.062 | −0.078 | 0.078 | −0.075 |
| Er | 0.219 | 0.003 | 0.024 | −0.090 | −0.105 | 0.093 | −0.065 |
| Tm | 0.214 | 0.029 | 0.014 | −0.103 | −0.139 | 0.087 | 0.000 |
| Yb | 0.212 | 0.002 | 0.028 | −0.063 | −0.152 | 0.152 | −0.078 |
| Lu | 0.208 | 0.023 | 0.014 | −0.094 | −0.147 | 0.150 | −0.058 |
| δ13C | −0.113 | −0.012 | 0.161 | 0.110 | −0.105 | 0.176 | 0.301 |
| δ15N | −0.074 | −0.153 | −0.174 | −0.032 | 0.222 | −0.100 | −0.367 |
| δ2H | 0.011 | −0.238 | 0.415 | 0.016 | −0.037 | 0.027 | 0.072 |
| δ18O | 0.076 | −0.271 | 0.354 | −0.025 | −0.033 | −0.153 | 0.037 |
| δ34S | −0.134 | −0.003 | −0.049 | 0.282 | −0.046 | 0.338 | 0.189 |
| 方差贡献率 | 43.879 | 11.257 | 7.176 | 6.548 | 68.860 | 3.988 | 3.261 |
| 累计贡献率 | 43.879 | 55.136 | 62.312 | 4.722 | 73.582 | 77.570 | 80.831 |
), ArticleFig(id=1320881018337346382, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Table 6, caption=
K-NN and SVM prediction results
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 宁洱县 | 梁河县 | 思茅区 | 景洪市 | 准确度 (%) | 总体精度 (%) |
|---|
SVM 预测 | 宁洱县 | 15 | 0 | 5 | 0 | 75 | |
| 梁河县 | 0 | 20 | 0 | 0 | 100 | |
| 思茅区 | 0 | 0 | 20 | 0 | 100 | |
| 景洪市 | 0 | 0 | 0 | 20 | 100 | 93.75 |
K-NN 预测 | 宁洱县 | 20 | 0 | 0 | 0 | 100 | |
| 梁河县 | 0 | 20 | 0 | 0 | 100 | |
| 思茅区 | 0 | 0 | 20 | 0 | 100 | |
| 景洪市 | 0 | 0 | 0 | 20 | 100 | 100 |
), ArticleFig(id=1320881018412843855, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=表6, caption=
K-NN和SVM预测结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 宁洱县 | 梁河县 | 思茅区 | 景洪市 | 准确度 (%) | 总体精度 (%) |
|---|
SVM 预测 | 宁洱县 | 15 | 0 | 5 | 0 | 75 | |
| 梁河县 | 0 | 20 | 0 | 0 | 100 | |
| 思茅区 | 0 | 0 | 20 | 0 | 100 | |
| 景洪市 | 0 | 0 | 0 | 20 | 100 | 93.75 |
K-NN 预测 | 宁洱县 | 20 | 0 | 0 | 0 | 100 | |
| 梁河县 | 0 | 20 | 0 | 0 | 100 | |
| 思茅区 | 0 | 0 | 20 | 0 | 100 | |
| 景洪市 | 0 | 0 | 0 | 20 | 100 | 100 |
), ArticleFig(id=1320881018484147024, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Table 7, caption=
Centroids function
, figureFileSmall=null, figureFileBig=null, tableContent=
| 产地 | 1 | 2 | 3 |
|---|
| 宁洱县 | 1.217 | 1.177 | 3.784 |
| 梁河县 | 2.549 | 3.319 | −2.349 |
| 思茅区 | 8.260 | −3.153 | −0.783 |
| 景洪市 | −12.026 | −1.343 | −0.652 |
), ArticleFig(id=1320881018551255889, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=表7, caption=
组质心函数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 产地 | 1 | 2 | 3 |
|---|
| 宁洱县 | 1.217 | 1.177 | 3.784 |
| 梁河县 | 2.549 | 3.319 | −2.349 |
| 思茅区 | 8.260 | −3.153 | −0.783 |
| 景洪市 | −12.026 | −1.343 | −0.652 |
), ArticleFig(id=1320881018626753362, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=EN, label=Table 8, caption=
Results of discriminant classification
, figureFileSmall=null, figureFileBig=null, tableContent=
| 地区 | 预测组成员 | 总计 |
|---|
| 宁洱县 | 梁河县 | 思茅区 | 景洪市 |
|---|
| 原始 | 计数(个) | 宁洱县 | 20 | 0 | 0 | 0 | 20 |
| 梁河县 | 0 | 20 | 0 | 0 | 20 |
| 思茅区 | 0 | 0 | 20 | 0 | 20 |
| 景洪市 | 0 | 0 | 0 | 20 | 20 |
| 判别率(%) | 宁洱县 | 100 | 0 | 0 | 0 | 100 |
| 梁河县 | 0 | 100 | 0 | 0 | 100 |
| 思茅区 | 0 | 0 | 100 | 0 | 100 |
| 景洪市 | 0 | 0 | 0 | 100 | 100 |
| 交叉验证 | 计数(个) | 宁洱县 | 18 | 2 | 0 | 0 | 20 |
| 梁河县 | 4 | 16 | 0 | 0 | 20 |
| 思茅区 | 0 | 0 | 20 | 0 | 20 |
| 景洪市 | 0 | 0 | 0 | 20 | 20 |
| 判别率(%) | 宁洱县 | 90 | 10 | 0 | 0 | 100 |
| 梁河县 | 20 | 80 | 0 | 0 | 100 |
| 思茅区 | 0 | 0 | 100 | 0 | 100 |
| 景洪市 | 0 | 0 | 0 | 100 | 100 |
), ArticleFig(id=1320881018698056531, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320880709921780721, language=CN, label=表8, caption=
判别分类结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 地区 | 预测组成员 | 总计 |
|---|
| 宁洱县 | 梁河县 | 思茅区 | 景洪市 |
|---|
| 原始 | 计数(个) | 宁洱县 | 20 | 0 | 0 | 0 | 20 |
| 梁河县 | 0 | 20 | 0 | 0 | 20 |
| 思茅区 | 0 | 0 | 20 | 0 | 20 |
| 景洪市 | 0 | 0 | 0 | 20 | 20 |
| 判别率(%) | 宁洱县 | 100 | 0 | 0 | 0 | 100 |
| 梁河县 | 0 | 100 | 0 | 0 | 100 |
| 思茅区 | 0 | 0 | 100 | 0 | 100 |
| 景洪市 | 0 | 0 | 0 | 100 | 100 |
| 交叉验证 | 计数(个) | 宁洱县 | 18 | 2 | 0 | 0 | 20 |
| 梁河县 | 4 | 16 | 0 | 0 | 20 |
| 思茅区 | 0 | 0 | 20 | 0 | 20 |
| 景洪市 | 0 | 0 | 0 | 20 | 20 |
| 判别率(%) | 宁洱县 | 90 | 10 | 0 | 0 | 100 |
| 梁河县 | 20 | 80 | 0 | 0 | 100 |
| 思茅区 | 0 | 0 | 100 | 0 | 100 |
| 景洪市 | 0 | 0 | 0 | 100 | 100 |
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