Article(id=1223193063992971681, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20220607, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1648483200000, receivedDateStr=2022-03-29, revisedDate=1650384000000, revisedDateStr=2022-04-20, acceptedDate=null, acceptedDateStr=null, onlineDate=1769561552283, onlineDateStr=2026-01-28, pubDate=1674576000000, pubDateStr=2023-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769561552283, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769561552283, creator=13701087609, updateTime=1769561552283, updator=13701087609, issue=Issue{id=1223193053830169317, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='1', pageStart='1', pageEnd='220', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769561549861, creator=13701087609, updateTime=1769567790701, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223219229885857794, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223219229885857795, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=63, endPage=67, ext={EN=ArticleExt(id=1223193065221902852, articleId=1223193063992971681, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Identifying Optimal Minimum Water Quality Index for Weihe River Tributaries in Xi’an City, columnId=1222925279849341011, journalTitle=Water Resources and Power, columnName=HYDROLOGY, WATER RESOURCES AND ENVIRONMENT, runingTitle=null, highlight=null, articleAbstract=

To determine the key water quality indicators for influencing the Weihe River tributaries of Chanhe, Bahe, Fenghe and Zaohe Rivers and the minimum water quality index (WWQImin) is of great significance for simplifying water quality evaluation. The research set up a total of 30 sampling points in the 4 rivers and collected water quality samples in April, August, and December 2019, respectively. Fifteen water quality indicators were analyzed by laboratory experiment and mathematical statistics. It was found that the content of DO in Fenghe River was obviously highest, and the contents of EC and nitrite in Zaohe River and the Bahe River reach after the convergence of Chanhe River were higher than other rivers. In addition, based on 15 water quality indicators, the water quality index (WWQI) was calculated to evaluate the temporal and spatial changes of water quality of the 4 rivers. This study shows that the water quality indices were generally above the medium level (WWQI≥51) in all four rivers, and the water quality of the Fenghe River was better among the four rivers. On time scale, the water quality in the spring of 2019 was better than the other two periods. Besides, stepwise multiple linear regression analysis and empirical method were used to determine the appropriate minimum water quality index (WWQImin), which contains DO, ammonia nitrogen, CODMn, turbidity, nitrate nitrogen, $\mathrm{SO}_{4}^{2-}$, and EC. Compared with the WWQI based on 15 water quality indicators, the relative error (PPE) is only 4.78%, the linear correlation coefficient R2 reaches 0.95, and the root mean square error (RRMSE) is only 3.99. Finally, the spatial and temporal distribution of WWQI and the appropriate WWQImin in the 4 rivers are consistent. Therefore, it can be considered that the selected appropriate WWQImin can be replaced of WQI, which is more efficient for time-saving, low-cost and high-efficiency water quality evaluation in the basin near the Chanhe, Bahe, Fenghe and Zaohe Rivers.

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分析影响渭河支流浐河、灞河、沣河和皂河水系的关键水质指标,进而确定最小水质指数(WWQImin),对简化水质评价意义重大。为此,在浐河、灞河、沣河和皂河4条河流共设30个采样点,于2019年4、8、12月分别进行采样,结合室内试验和数理统计的方法对浐河、灞河、沣河、皂河的15个水质指标进行分析,发现沣河DO含量最高,皂河和浐河交汇后的灞河段的EC、亚硝氮含量相比其他河流较高。此外,基于15个水质指标应用水质指数(WWQI)对浐灞沣皂河水质的时空变化进行评价,发现水质总体达中等以上水平(WWQI≥51),4条河流中沣河水质更好,而2019年春季的水质相比另外两个时期更好。同时,应用逐步多元线性回归分析法和经验法确定出了最佳的最小水质指数(WWQImin),该WWQImin包含DO、氨氮、CODMn、浊度、硝氮、$\mathrm{SO}_{4}^{2-}$、EC共7个水质指标,与基于15个水质指标得出的WWQI相比的相对误差PPE仅为4.78%,确定性系数R2则达到了0.95,均方根误差RRMSE仅为3.99。最后,将WWQI与最佳WWQImin在浐河、灞河、沣河、皂河进行时空对比发现二者在时空分布上具有一致性。可见选出的最佳WWQImin可较好地替代WWQI对浐河、灞河、沣河、皂河附近流域进行省时、低成本、高效的水质评价。

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连炎清(1963-),男,博士、研究员,研究方向为水文,E-mail:
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徐新涵(1994-),女,硕士研究生,研究方向为水环境,E-mail:

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徐新涵(1994-),女,硕士研究生,研究方向为水环境,E-mail:

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徐新涵(1994-),女,硕士研究生,研究方向为水环境,E-mail:

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西安市渭河支流最小水质指数优选
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徐新涵 1 , 连炎清 2 , 李晓科 1 , 方焱 1 , 王喆 1
水电能源科学 | 水文水资源与环境 2023,41(1): 63-67
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水电能源科学 | 水文水资源与环境 2023, 41(1): 63-67
西安市渭河支流最小水质指数优选
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徐新涵1 , 连炎清2 , 李晓科1, 方焱1, 王喆1
作者信息
  • 1.西安地球环境创新研究院,陕西 西安 710061
  • 2.河海大学长江保护与绿色发展研究院,江苏 南京 210098
  • 徐新涵(1994-),女,硕士研究生,研究方向为水环境,E-mail:

通讯作者:

连炎清(1963-),男,博士、研究员,研究方向为水文,E-mail:
Identifying Optimal Minimum Water Quality Index for Weihe River Tributaries in Xi’an City
Xin-han XU1 , Yan-qing LIAN2 , Xiao-ke LI1, Yan FANG1, Zhe WANG1
Affiliations
  • 1.Xi’an Institute for Innovative Earth Environment Research, Xi’an 710061, China
  • 2.Yangtze Institute for Conservation and Development, Hohai University, Nanjing 210098, China
出版时间: 2023-01-25 doi: 10.20040/j.cnki.1000-7709.2023.20220607
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分析影响渭河支流浐河、灞河、沣河和皂河水系的关键水质指标,进而确定最小水质指数(WWQImin),对简化水质评价意义重大。为此,在浐河、灞河、沣河和皂河4条河流共设30个采样点,于2019年4、8、12月分别进行采样,结合室内试验和数理统计的方法对浐河、灞河、沣河、皂河的15个水质指标进行分析,发现沣河DO含量最高,皂河和浐河交汇后的灞河段的EC、亚硝氮含量相比其他河流较高。此外,基于15个水质指标应用水质指数(WWQI)对浐灞沣皂河水质的时空变化进行评价,发现水质总体达中等以上水平(WWQI≥51),4条河流中沣河水质更好,而2019年春季的水质相比另外两个时期更好。同时,应用逐步多元线性回归分析法和经验法确定出了最佳的最小水质指数(WWQImin),该WWQImin包含DO、氨氮、CODMn、浊度、硝氮、$\mathrm{SO}_{4}^{2-}$、EC共7个水质指标,与基于15个水质指标得出的WWQI相比的相对误差PPE仅为4.78%,确定性系数R2则达到了0.95,均方根误差RRMSE仅为3.99。最后,将WWQI与最佳WWQImin在浐河、灞河、沣河、皂河进行时空对比发现二者在时空分布上具有一致性。可见选出的最佳WWQImin可较好地替代WWQI对浐河、灞河、沣河、皂河附近流域进行省时、低成本、高效的水质评价。

渭河支流  /  水质指标  /  水质指数(WWQI)  /  最小水质指数(WWQImin

To determine the key water quality indicators for influencing the Weihe River tributaries of Chanhe, Bahe, Fenghe and Zaohe Rivers and the minimum water quality index (WWQImin) is of great significance for simplifying water quality evaluation. The research set up a total of 30 sampling points in the 4 rivers and collected water quality samples in April, August, and December 2019, respectively. Fifteen water quality indicators were analyzed by laboratory experiment and mathematical statistics. It was found that the content of DO in Fenghe River was obviously highest, and the contents of EC and nitrite in Zaohe River and the Bahe River reach after the convergence of Chanhe River were higher than other rivers. In addition, based on 15 water quality indicators, the water quality index (WWQI) was calculated to evaluate the temporal and spatial changes of water quality of the 4 rivers. This study shows that the water quality indices were generally above the medium level (WWQI≥51) in all four rivers, and the water quality of the Fenghe River was better among the four rivers. On time scale, the water quality in the spring of 2019 was better than the other two periods. Besides, stepwise multiple linear regression analysis and empirical method were used to determine the appropriate minimum water quality index (WWQImin), which contains DO, ammonia nitrogen, CODMn, turbidity, nitrate nitrogen, $\mathrm{SO}_{4}^{2-}$, and EC. Compared with the WWQI based on 15 water quality indicators, the relative error (PPE) is only 4.78%, the linear correlation coefficient R2 reaches 0.95, and the root mean square error (RRMSE) is only 3.99. Finally, the spatial and temporal distribution of WWQI and the appropriate WWQImin in the 4 rivers are consistent. Therefore, it can be considered that the selected appropriate WWQImin can be replaced of WQI, which is more efficient for time-saving, low-cost and high-efficiency water quality evaluation in the basin near the Chanhe, Bahe, Fenghe and Zaohe Rivers.

Weihe river tributaries  /  water quality indicators  /  water quality index (WWQI)  /  minimum water quality index (WWQImin)
徐新涵, 连炎清, 李晓科, 方焱, 王喆. 西安市渭河支流最小水质指数优选. 水电能源科学, 2023 , 41 (1) : 63 -67 . DOI: 10.20040/j.cnki.1000-7709.2023.20220607
Xin-han XU, Yan-qing LIAN, Xiao-ke LI, Yan FANG, Zhe WANG. Identifying Optimal Minimum Water Quality Index for Weihe River Tributaries in Xi’an City[J]. Water Resources and Power, 2023 , 41 (1) : 63 -67 . DOI: 10.20040/j.cnki.1000-7709.2023.20220607
  • 国家重点研发计划(2021YFC3201103)
  • 中国科学院“西部之光”人才培养引进计划资助项目(2018)
  • 陕西省重点研发计划项目(S2020-YF-GHZD-0061)
2023年第41卷第1期
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doi: 10.20040/j.cnki.1000-7709.2023.20220607
  • 接收时间:2022-03-29
  • 首发时间:2026-01-28
  • 出版时间:2023-01-25
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出版历史
  • 收稿日期:2022-03-29
  • 修回日期:2022-04-20
基金
国家重点研发计划(2021YFC3201103)
中国科学院“西部之光”人才培养引进计划资助项目(2018)
陕西省重点研发计划项目(S2020-YF-GHZD-0061)
作者信息
    1.西安地球环境创新研究院,陕西 西安 710061
    2.河海大学长江保护与绿色发展研究院,江苏 南京 210098

通讯作者:

连炎清(1963-),男,博士、研究员,研究方向为水文,E-mail:
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2种不同金属材料的力学参数

Family
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Number of
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Genus
种数
Number of
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占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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