Article(id=1312009674929570285, tenantId=1146029695717560320, journalId=1311385839672066169, issueId=1312009474789958403, articleNumber=null, orderNo=null, doi=10.13870/j.cnki.stbcxb.2026.04.036, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1765728000000, receivedDateStr=2025-12-15, revisedDate=1769270400000, revisedDateStr=2026-01-25, acceptedDate=1770739200000, acceptedDateStr=2026-02-11, onlineDate=1790737082463, onlineDateStr=2026-09-30, pubDate=1787846400000, pubDateStr=2026-08-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790737082463, onlineIssueDateStr=2026-09-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790737082463, creator=13701087609, updateTime=1790737082463, updator=13701087609, issue=Issue{id=1312009474789958403, tenantId=1146029695717560320, journalId=1311385839672066169, year='2026', volume='40', issue='4', pageStart='1', pageEnd='488', issueExtLink='null', onlineDate='null', pubDate='1787846400000', pubDateStr='2026-08-28', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1790737034746, creator='13701087609', updateTime=1790739471092, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1312019693662204413, tenantId=1146029695717560320, journalId=1311385839672066169, issueId=1312009474789958403, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1312019693662204414, tenantId=1146029695717560320, journalId=1311385839672066169, issueId=1312009474789958403, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=386, endPage=395, ext={EN=ArticleExt(id=1312009675139285486, articleId=1312009674929570285, tenantId=1146029695717560320, journalId=1311385839672066169, language=EN, title=Source-Sink Mechanisms of Heavy Metals in Net Deposited Sediments in Water-Level Fluctuation Zone of Three Gorges Reservoir Area, columnId=1312009477243626245, journalTitle=Journal of Soil and Water Conservation, columnName=Basic Research, runingTitle=null, highlight=null, articleAbstract=
Objective To clarify the newly introduced pollution fingerprints during a single hydrological regulation cycle in the Three Gorges Reservoir Area, and accurately identify the sources and driving mechanisms of heavy metals under different hydrodynamic conditions. Methods In the typical riparian water-level fluctuation zones (Shibaozhai, Guojiaba, and Xiangxi River) in the middle and lower reaches of the Three Gorges Reservoir Area, intact net-deposited sediments across a complete hydrological cycle were collected using in-situ sediment columns. The potential ecological risk index (PERI), canonical correspondence analysis (CCA), and positive matrix factorization (PMF) were applied to systematically analyze the pollution characteristics, sources, and environmental driving mechanisms of heavy metals (As, Cd, Cr, Cu, Mn, Ni, Pb, Zn). Results 1) Pollution characteristics: Cd was the primary pollution factor, with its average content significantly higher than the background value of the reservoir area. The ecological risk level in the reservoir center was significantly higher than that in the reservoir head, and the high-risk hotspots were concentrated in the deep flooding zone (145~155 m). 2) Driving mechanisms: Flooding duration explained 54.5% of the variance in heavy metals, serving as the primary driving factor. The "hydraulic sorting effect" driven by long-term flooding facilitated the preferential adsorption and accumulation of fine particles and heavy metals in low-elevation areas. 3) Source apportionment: The PMF model identified three pollution sources, namely traffic/industrial sources (mainly contributing to Cd and Pb), agricultural/mixed sources (mainly contributing to As, Cu, and Ni), and natural sources (mainly contributing to Mn). Among these, the contribution rate of industrial sources to Cd was nearly 100%. Conclusion It is confirmed that the net-deposited sediments can effectively retrace short-term pollution inputs in the reservoir area and confirm the interception effect of the midstream backwater fluctuation zone as a "sediment filter" and its vertical enrichment mechanism, thereby providing a scientific basis for the refined management and zoned prevention and control of heavy metal pollution in the water-level fluctuation zone of the Three Gorges Reservoir Area.
, authors=Jiani SHENG
1, Nian LI
1, Yuanyuan CAI
1, Tianwei WANG
1, Zhaoxia LI
1, Yong XUE
2, authorsList=Jiani SHENG, Nian LI, Yuanyuan CAI, Tianwei WANG, Zhaoxia LI, Yong XUE, authorCompany=null, correspAuthors=Tianwei WANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, 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=1312009678377288187, articleId=1312009674929570285, tenantId=1146029695717560320, journalId=1311385839672066169, language=CN, title=三峡库区消落带净沉积泥沙重金属源汇机制, columnId=1312009477407204103, journalTitle=水土保持学报, columnName=基础研究, runingTitle=null, highlight=null, articleAbstract=
目的 为明确三峡库区单次水文调度周期内新增污染指纹,精准解析不同水动力条件下重金属的来源与驱动机制。 方法 在三峡库区典型干支流消落带(石宝寨、郭家坝、香溪河),利用原位沉积柱采集了完整水文周期的净沉积泥沙,结合潜在生态风险指数(PERI)、典范对应分析(CCA)及正定矩阵因子模型(PMF),系统解析了重金属(As、Cd、Cr、Cu、Mn、Ni、Pb、Zn)的污染特征、来源及环境驱动机制。 结果 1)污染特征:Cd是首要污染因子,平均含量显著高于库区背景值。库中的生态风险等级显著高于库首,且高风险热区为深层淹水区(145~155 m)。2)驱动机制:淹水时长解释了54.5%的重金属变异,是首要驱动因子。长周期淹水驱动的“水力分选效应”促使细颗粒物与重金属优先在低高程区吸附累积。3)来源解析:PMF模型识别出交通/工业源(主导Cd,Pb)、农业/混合源(主导As、Cu、Ni)和自然源(主导Mn)3类来源,其中Cd对工业源的贡献率接近100%。 结论 净沉积泥沙能有效反演库区短期污染输入,证实库区中部回水变动区作为“沉积过滤器”的拦截效应及其垂直富集机制,为三峡库区消落带重金属污染的精细化管理与分区防控提供科学依据。
, authors=盛佳妮
1, 李念
1, 蔡源远
1, 王天巍
1, 李朝霞
1, 薛勇
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盛佳妮(2001—),女,硕士研究生,主要从事水土流失与污染防治研究。E-mail:sjn@webmail.hzau.edu.cn
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盛佳妮(2001—),女,硕士研究生,主要从事水土流失与污染防治研究。E-mail:sjn@webmail.hzau.edu.cn
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1.华中农业大学资源与环境学院,武汉 430070)])]), Author(id=1312009680046621202, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wangtianwei@webmail.hzau.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1312009680143090196, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, authorId=1312009680046621202, language=EN, stringName=Tianwei WANG, firstName=Tianwei, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2.湖北省五峰土家族自治县农业农村局,湖北 五峰 443413, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1312009678750581247, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, xref=2., ext=[AuthorCompanyExt(id=1312009678763164160, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, companyId=1312009678750581247, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1.华中农业大学资源与环境学院,武汉 430070)]), AuthorCompany(id=1312009678750581247, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, xref=2., ext=[AuthorCompanyExt(id=1312009678763164160, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, companyId=1312009678750581247, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Agriculture and;Rural Affairs Bureau of Hubei Wufeng Tujia Autonomous County,Wufeng,Hubei 443413,China), AuthorCompanyExt(id=1312009678784135681, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, companyId=1312009678750581247, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.湖北省五峰土家族自治县农业农村局,湖北 五峰 443413)])], figs=[ArticleFig(id=1312009683288818220, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Fig.1, caption=
Study area and sampling strategy, figureFileSmall=LG8NVqaXbZj32/DMhKnBHQ==, figureFileBig=HcV6K/l4ThHWwjUviTJj3A==, tableContent=null), ArticleFig(id=1312009683364315693, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=图1, caption=
研究区与采样方案注:图a为三峡水库范围及具体研究段;图b为采样点详细位置,石宝镇(SBZ,库中干流)、郭家坝(GJB,库首干流)、香溪河(XXH,库首支流),垂线代表江水悬浮物(SPM)的采样断面;图c为消落带(WLFZ)内沿高程梯度(145~175 m)的断面采样设计示意,上坡面土壤指在175 m以上采集的土壤样品;图d)为用于采集净沉积泥沙的沉积柱设计,含石英砂隔层以区分新沉积物与历史沉积物。
, figureFileSmall=LG8NVqaXbZj32/DMhKnBHQ==, figureFileBig=HcV6K/l4ThHWwjUviTJj3A==, tableContent=null), ArticleFig(id=1312009683561447982, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Fig.2, caption=
Spatial distribution patterns of heavy metals in net-deposited sediments in typical mainstream and tributary water-level fluctuation zones, figureFileSmall=vBrfw3wFiWc5++Y4MwGX8g==, figureFileBig=h3aQnAyhJRcNGRL9tzptYg==, tableContent=null), ArticleFig(id=1312009683645334063, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=图2, caption=
典型干支流消落带净沉积泥沙中重金属的空间分布特征注:图中箱线图为重金属在不同采样区(GJB郭家坝;SBZ石宝镇;XXH香溪河)的浓度分布特征,箱体上下边界分别代表第75和第25百分位数,横线代表中位数;散点颜色映射采样点的高程(Elevation);图形上方的连接线及星号表示不同采样区间的差异显著性水平(基于Wilcoxon秩和检验);ns表示无显著差异(p>0.05),*表示p<0.05,**表示p<0.01,***表示p<0.001,****表示p<0.000 1。
, figureFileSmall=vBrfw3wFiWc5++Y4MwGX8g==, figureFileBig=h3aQnAyhJRcNGRL9tzptYg==, tableContent=null), ArticleFig(id=1312009683720831536, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Fig.3, caption=
Vertical gradient characteristics and trend fitting of heavy metal contents in net-deposited sediments along elevation gradient, figureFileSmall=Deu3RPAuCV70Sljw/ySZ2g==, figureFileBig=IigOVx0TUPL/69vFbpYQsQ==, tableContent=null), ArticleFig(id=1312009683800523313, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=图3, caption=
净沉积泥沙中重金属含量随高程变化的垂直梯度特征及趋势拟合注:散点为不同高程(145~175 m)处的重金属实测浓度;不同颜色代表不同的采样区域;实线及阴影区域分别表示线性回归拟合趋势线及95%置信区间;图内标注的R和p值基于Spearman相关性分析。
, figureFileSmall=Deu3RPAuCV70Sljw/ySZ2g==, figureFileBig=IigOVx0TUPL/69vFbpYQsQ==, tableContent=null), ArticleFig(id=1312009683867632178, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Fig.4, caption=
Potential ecological risk assessment of net-deposited sediments in water-level fluctuation zone of TGR, figureFileSmall=VHj4yXhFF0kvRnX7xyYEgg==, figureFileBig=yTCFOdcW8iAHKz183oI11w==, tableContent=null), ArticleFig(id=1312009683947323955, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=图4, caption=
三峡库区消落带净沉积泥沙潜在生态风险评价注:图a中Cd的高占比(色块最大)表明其为首要风险控制因子。图b红色区域指示高风险区,SBZ低高程段(145~155 m)为显著的风险热点。
, figureFileSmall=VHj4yXhFF0kvRnX7xyYEgg==, figureFileBig=yTCFOdcW8iAHKz183oI11w==, tableContent=null), ArticleFig(id=1312009684006044212, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Fig.5, caption=
Canonical correspondence analysis (CCA) ordination of heavy metals in net-deposited sediments and envi-ronmental driving factors in water-level fluctuation zone of TGR, figureFileSmall=wSpo6EyBAcjfGChv93StlQ==, figureFileBig=v1GuQDlKrbCQEnpLR4Z+Mw==, tableContent=null), ArticleFig(id=1312009684077347381, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=图5, caption=
三峡库区消落带净沉积泥沙重金属与环境驱动因子的典范对应分析(CCA)排序注:图中散点代表不同采样区(SBZ库中干流;GJB库首干流;XXH库首支流)的净沉积泥沙样本,形状区分深水区(≤160 m)与波动区(>160 m);红色文字标示重金属元素在环境梯度中的分布中心(为优化展示,重金属得分已通过比例因子k=30.2进行放大);黑色箭头代表环境驱动因子,箭头长度反映因子解释强度,箭头与轴的夹角表示相关性。
, figureFileSmall=wSpo6EyBAcjfGChv93StlQ==, figureFileBig=v1GuQDlKrbCQEnpLR4Z+Mw==, tableContent=null), ArticleFig(id=1312009684157039158, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Fig.6, caption=
Source composition spectra and contribution rates of heavy metals in net-deposited sediments based on PMF model, figureFileSmall=YqcGFgcuxZ4ulQUSM1HlKg==, figureFileBig=apMngDGyD9i62ccKwlRjyA==, tableContent=null), ArticleFig(id=1312009684236730935, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=图6, caption=
基于PMF模型解析的净沉积泥沙重金属污染源成分谱及贡献率, figureFileSmall=YqcGFgcuxZ4ulQUSM1HlKg==, figureFileBig=apMngDGyD9i62ccKwlRjyA==, tableContent=null), ArticleFig(id=1312009684324811320, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Table 1, caption=
Background values and toxicity coefficients of heavy metals used in potential ecological risk index (PERI)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 重金属 | 背景值/(mg·kg-1) | 毒性系数 |
|---|
| As | 5.84 | 10 |
| Cr | 78.03 | 2 |
| Cu | 25.00 | 5 |
| Mn | 242.80 | 1 |
| Ni | 29.47 | 1 |
| Zn | 69.88 | 5 |
| Pb | 23.88 | 5 |
| Cd | 0.13 | 30 |
), ArticleFig(id=1312009684408697401, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=表1, caption=
PERI中重金属所使用背景值及毒性系数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 重金属 | 背景值/(mg·kg-1) | 毒性系数 |
|---|
| As | 5.84 | 10 |
| Cr | 78.03 | 2 |
| Cu | 25.00 | 5 |
| Mn | 242.80 | 1 |
| Ni | 29.47 | 1 |
| Zn | 69.88 | 5 |
| Pb | 23.88 | 5 |
| Cd | 0.13 | 30 |
), ArticleFig(id=1312009684484194874, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Table 2, caption=
Risk classification of heavy metals based on PERI
, figureFileSmall=null, figureFileBig=null, tableContent=
| 风险等级 | | RI |
|---|
| 低风险 | | |
| 中等风险 | | |
| 显著风险 | | - |
| 高风险 | | |
| 极高风险 | | |
), ArticleFig(id=1312009684559692347, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=表2, caption=
PERI对重金属风险等级分类
, figureFileSmall=null, figureFileBig=null, tableContent=
| 风险等级 | | RI |
|---|
| 低风险 | | |
| 中等风险 | | |
| 显著风险 | | - |
| 高风险 | | |
| 极高风险 | | |
), ArticleFig(id=1312009684660355644, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Table 3, caption=
Heavy metal contents in sediments from upper slope (>175 m) of typical mainstream and tributary water-level fluctuation zones
, figureFileSmall=null, figureFileBig=null, tableContent=
| 位置 | As | Cr | Cu | Mn | Ni | Zn | Pb | Cd |
|---|
| SBZ | 4.56 | 54.13 | 17.56 | 330.41 | 20.49 | 70.22 | 23.01 | 0.23 |
| GJB | 17.28 | 72.60 | 33.60 | 365.31 | 36.62 | 116.12 | 17.68 | 0.35 |
| XXH | 18.32 | 68.18 | 32.36 | 315.70 | 29.98 | 108.74 | 18.00 | 0.30 |
), ArticleFig(id=1312009684773601853, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=表3, caption=
典型干支流消落带上坡面(>175 m)泥沙中重金属含量
, figureFileSmall=null, figureFileBig=null, tableContent=
| 位置 | As | Cr | Cu | Mn | Ni | Zn | Pb | Cd |
|---|
| SBZ | 4.56 | 54.13 | 17.56 | 330.41 | 20.49 | 70.22 | 23.01 | 0.23 |
| GJB | 17.28 | 72.60 | 33.60 | 365.31 | 36.62 | 116.12 | 17.68 | 0.35 |
| XXH | 18.32 | 68.18 | 32.36 | 315.70 | 29.98 | 108.74 | 18.00 | 0.30 |
), ArticleFig(id=1312009684853293630, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Table 4, caption=
Heavy metal contents in riverine suspended particulate matter from typical mainstream and tributary water-level fluctuation zones
, figureFileSmall=null, figureFileBig=null, tableContent=
| 位置 | As | Cr | Cu | Mn | Ni | Zn | Pb | Cd |
|---|
| SBZ | 8.89 | 75.89 | 31.15 | 441.98 | 34.27 | 186.22 | 46.10 | 0.81 |
| GJB | 9.52 | 56.38 | 34.86 | 476.77 | 27.79 | 273.37 | 71.92 | 0.82 |
| XXH | 16.17 | 47.72 | 30.26 | 445.92 | 29.81 | 157.62 | 89.29 | 0.57 |
), ArticleFig(id=1312009684932985407, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=表4, caption=
典型干支流消落带江水悬浮物重金属含量
, figureFileSmall=null, figureFileBig=null, tableContent=
| 位置 | As | Cr | Cu | Mn | Ni | Zn | Pb | Cd |
|---|
| SBZ | 8.89 | 75.89 | 31.15 | 441.98 | 34.27 | 186.22 | 46.10 | 0.81 |
| GJB | 9.52 | 56.38 | 34.86 | 476.77 | 27.79 | 273.37 | 71.92 | 0.82 |
| XXH | 16.17 | 47.72 | 30.26 | 445.92 | 29.81 | 157.62 | 89.29 | 0.57 |
), ArticleFig(id=1312009685016871488, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Table 5, caption=
Physicochemical properties of in-situ sediments from typical mainstream and tributary water-level fluctuation zones
, figureFileSmall=null, figureFileBig=null, tableContent=
| 位置 | 性质 | 145 m | 150 m | 155 m | 160 m | 165 m | 170 m | 175 m |
|---|
| SBZ | 质地(黏-砂比) | - | 1.38 | 1.49 | 0.35 | 1.01 | 0.98 | 0.63 |
| 有机质/(g·kg-1) | - | 14.80 | 14.63 | 19.48 | 22.30 | 14.30 | 12.23 |
| pH | - | 6.73 | 6.52 | 6.01 | 6.16 | 4.91 | 5.47 |
| GJB | 质地(黏-砂比) | 0.87 | 1.06 | 0.35 | 0.36 | 0.32 | 1.97 | 2.02 |
| 有机质/(g·kg-1) | 14.93 | 15.75 | 15.42 | 13.26 | 11.37 | 9.87 | 15.86 |
| pH | 6.33 | 6.32 | 6.39 | 6.42 | 6.47 | 6.47 | 6.30 |
| XXH | 质地(黏-砂比) | 0.33 | 0.38 | 0.19 | 0.20 | 0.04 | 0.60 | 1.15 |
| 有机质/(g·kg-1) | 14.32 | 14.33 | 14.34 | 14.54 | 10.52 | 10.60 | 15.21 |
| pH | 6.36 | 6.26 | 6.36 | 6.46 | 6.56 | 6.52 | 6.32 |
), ArticleFig(id=1312009685109146177, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=表5, caption=
典型干支流消落带原位沉积物理化性质
, figureFileSmall=null, figureFileBig=null, tableContent=
| 位置 | 性质 | 145 m | 150 m | 155 m | 160 m | 165 m | 170 m | 175 m |
|---|
| SBZ | 质地(黏-砂比) | - | 1.38 | 1.49 | 0.35 | 1.01 | 0.98 | 0.63 |
| 有机质/(g·kg-1) | - | 14.80 | 14.63 | 19.48 | 22.30 | 14.30 | 12.23 |
| pH | - | 6.73 | 6.52 | 6.01 | 6.16 | 4.91 | 5.47 |
| GJB | 质地(黏-砂比) | 0.87 | 1.06 | 0.35 | 0.36 | 0.32 | 1.97 | 2.02 |
| 有机质/(g·kg-1) | 14.93 | 15.75 | 15.42 | 13.26 | 11.37 | 9.87 | 15.86 |
| pH | 6.33 | 6.32 | 6.39 | 6.42 | 6.47 | 6.47 | 6.30 |
| XXH | 质地(黏-砂比) | 0.33 | 0.38 | 0.19 | 0.20 | 0.04 | 0.60 | 1.15 |
| 有机质/(g·kg-1) | 14.32 | 14.33 | 14.34 | 14.54 | 10.52 | 10.60 | 15.21 |
| pH | 6.36 | 6.26 | 6.36 | 6.46 | 6.56 | 6.52 | 6.32 |
), ArticleFig(id=1312009685222392386, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=EN, label=Table 6, caption=
Descriptive statistics of heavy metal contents in net-deposited sediments from typical mainstream and tributary water-level fluctuation zones
, figureFileSmall=null, figureFileBig=null, tableContent=
| 重金属 | 平均值 | 标准差 | 方差 | 偏度 | 峰度 | CV/% |
|---|
| As | 11.01 | 1.58 | 2.50 | -0.14 | -0.20 | 14.37 |
| Cr | 72.42 | 9.76 | 95.26 | -0.52 | -0.14 | 13.48 |
| Cu | 49.72 | 5.03 | 25.27 | -0.38 | 0.06 | 10.11 |
| Mn | 768.87 | 264.32 | 69 865.82 | -0.05 | -1.00 | 34.38 |
| Ni | 38.96 | 6.17 | 38.01 | -0.40 | -0.51 | 15.83 |
| Zn | 152.86 | 27.39 | 750.07 | -0.60 | -0.08 | 17.92 |
| Pb | 50.38 | 16.00 | 255.90 | 0.18 | -0.22 | 31.75 |
| Cd | 0.72 | 0.32 | 0.10 | 0.80 | 0.37 | 44.39 |
), ArticleFig(id=1312009685297889859, tenantId=1146029695717560320, journalId=1311385839672066169, articleId=1312009674929570285, language=CN, label=表6, caption=
典型干支流消落带净沉积泥沙重金属含量描述性统计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 重金属 | 平均值 | 标准差 | 方差 | 偏度 | 峰度 | CV/% |
|---|
| As | 11.01 | 1.58 | 2.50 | -0.14 | -0.20 | 14.37 |
| Cr | 72.42 | 9.76 | 95.26 | -0.52 | -0.14 | 13.48 |
| Cu | 49.72 | 5.03 | 25.27 | -0.38 | 0.06 | 10.11 |
| Mn | 768.87 | 264.32 | 69 865.82 | -0.05 | -1.00 | 34.38 |
| Ni | 38.96 | 6.17 | 38.01 | -0.40 | -0.51 | 15.83 |
| Zn | 152.86 | 27.39 | 750.07 | -0.60 | -0.08 | 17.92 |
| Pb | 50.38 | 16.00 | 255.90 | 0.18 | -0.22 | 31.75 |
| Cd | 0.72 | 0.32 | 0.10 | 0.80 | 0.37 | 44.39 |
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