Article(id=1223196814048875468, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223196803663778281, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20222455, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1668960000000, receivedDateStr=2022-11-21, revisedDate=1677513600000, revisedDateStr=2023-02-28, acceptedDate=null, acceptedDateStr=null, onlineDate=1769562446366, onlineDateStr=2026-01-28, pubDate=1692892800000, pubDateStr=2023-08-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769562446366, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769562446366, creator=13701087609, updateTime=1769562446366, updator=13701087609, issue=Issue{id=1223196803663778281, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='8', pageStart='1', pageEnd='222', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769562443888, creator=13701087609, updateTime=1769563793740, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223202465391166440, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223196803663778281, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223202465391166441, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223196803663778281, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1, endPage=4, ext={EN=ArticleExt(id=1223196815726597116, articleId=1223196814048875468, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Application of Stochastic Forest Precipitation Fusion Algorithm With Covariates in Yangtze River Basin, columnId=1222925279849341011, journalTitle=Water Resources and Power, columnName=HYDROLOGY, WATER RESOURCES AND ENVIRONMENT, runingTitle=null, highlight=null, articleAbstract=

The precipitation data with high quality and high spatial and temporal resolution is of great significance to the research of hydrology, meteorology and other fields. At present, remote sensing and reanalysis of precipitation data are widely used, but there are problems such as low resolution, high uncertainty of accuracy, etc. In this paper, a random forest precipitation fusion algorithm considering covariates is proposed to fuse seven sets of precipitation products, namely CMA, CN05, ERA5, GLDAS, TRMM, IMERG and PERSIANN. Three typical sub-basins of the Yangtze River basin (Jinsha River, Sanxiaqujian and Poyang Lake) are selected to test the effect of random forest fusion data (RFF). The results show that for the accuracy of precipitation products, the accuracy of random forest fusion data is improved compared with the original precipitation products. For the accuracy assessment of different precipitation events, with the increase of rainfall intensity, the TTS score of each precipitation product shows a decreasing trend, and the TTS score of RFF is better than the original precipitation product. Data fusion of precipitation products through random forest model considering covariates can improve the accuracy of precipitation data and the reliability of different precipitation events, which provides support for hydrological simulation.

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高质量、高时空分辨率的降水数据对水文、气象等领域的研究具有重要意义。目前遥感、再分析降水数据应用普遍,但存在分辨率低、精度不确定性大等问题。对此,提出了考虑协变量的随机森林降水融合算法,对CMA、CN05、ERA5、GLDAS、TRMM、IMERG、PERSIANN七套降水产品进行融合,并选取长江流域的三个典型子流域(金沙江、三峡区间、鄱阳湖)进行随机森林融合数据(RFF)的效果检验。结果显示,对于降水产品准确性,随机森林融合数据精度相较于原始降水产品有所提升。对于不同降水事件的准确性评估,随着降雨强度增加,各降水产品风险评分(TTS)评分均呈减小趋势,RFF的TTS评分优于原始降水产品。通过考虑协变量的随机森林模型对降水产品进行数据融合,可以提升降水数据的精度及不同降水事件发生的可靠性,为水文模拟等提供支持。

, correspAuthors=null, authorNote=null, correspAuthorsNote=
梁犁丽(1982-),女,博士、正高级工程师,研究方向为水文学及水资源,E-mail:
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徐志(1990-),男,博士、工程师,研究方向为水文学及水资源,E-mail:

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徐志(1990-),男,博士、工程师,研究方向为水文学及水资源,E-mail:

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徐志(1990-),男,博士、工程师,研究方向为水文学及水资源,E-mail:

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考虑协变量的随机森林降水融合算法在长江流域的应用
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徐志 1 , 牟亚莉 2 , 梁犁丽 1 , 王贺龙 3
水电能源科学 | 水文水资源与环境 2023,41(8): 1-4
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水电能源科学 | 水文水资源与环境 2023, 41(8): 1-4
考虑协变量的随机森林降水融合算法在长江流域的应用
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徐志1 , 牟亚莉2, 梁犁丽1 , 王贺龙3
作者信息
  • 1.中国长江三峡集团有限公司科学技术研究院,北京 101199
  • 2.中国水利水电科学研究院,北京 100038
  • 3.浙江省水利河口研究院,浙江 杭州 310020
  • 徐志(1990-),男,博士、工程师,研究方向为水文学及水资源,E-mail:

通讯作者:

梁犁丽(1982-),女,博士、正高级工程师,研究方向为水文学及水资源,E-mail:
Application of Stochastic Forest Precipitation Fusion Algorithm With Covariates in Yangtze River Basin
Zhi XU1 , Ya-li MOU2, Li-li LIANG1 , He-long WANG3
Affiliations
  • 1.Science and Technology Research Institute, China Three Gorges Corporation, Beijing 101199, China
  • 2.China Institute of Water Resources and Hydropower Research, Beijing 100038, China
  • 3.Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, China
出版时间: 2023-08-25 doi: 10.20040/j.cnki.1000-7709.2023.20222455
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高质量、高时空分辨率的降水数据对水文、气象等领域的研究具有重要意义。目前遥感、再分析降水数据应用普遍,但存在分辨率低、精度不确定性大等问题。对此,提出了考虑协变量的随机森林降水融合算法,对CMA、CN05、ERA5、GLDAS、TRMM、IMERG、PERSIANN七套降水产品进行融合,并选取长江流域的三个典型子流域(金沙江、三峡区间、鄱阳湖)进行随机森林融合数据(RFF)的效果检验。结果显示,对于降水产品准确性,随机森林融合数据精度相较于原始降水产品有所提升。对于不同降水事件的准确性评估,随着降雨强度增加,各降水产品风险评分(TTS)评分均呈减小趋势,RFF的TTS评分优于原始降水产品。通过考虑协变量的随机森林模型对降水产品进行数据融合,可以提升降水数据的精度及不同降水事件发生的可靠性,为水文模拟等提供支持。

降水融合  /  随机森林  /  协变量  /  长江流域  /  精度评估

The precipitation data with high quality and high spatial and temporal resolution is of great significance to the research of hydrology, meteorology and other fields. At present, remote sensing and reanalysis of precipitation data are widely used, but there are problems such as low resolution, high uncertainty of accuracy, etc. In this paper, a random forest precipitation fusion algorithm considering covariates is proposed to fuse seven sets of precipitation products, namely CMA, CN05, ERA5, GLDAS, TRMM, IMERG and PERSIANN. Three typical sub-basins of the Yangtze River basin (Jinsha River, Sanxiaqujian and Poyang Lake) are selected to test the effect of random forest fusion data (RFF). The results show that for the accuracy of precipitation products, the accuracy of random forest fusion data is improved compared with the original precipitation products. For the accuracy assessment of different precipitation events, with the increase of rainfall intensity, the TTS score of each precipitation product shows a decreasing trend, and the TTS score of RFF is better than the original precipitation product. Data fusion of precipitation products through random forest model considering covariates can improve the accuracy of precipitation data and the reliability of different precipitation events, which provides support for hydrological simulation.

precipitation fusion  /  random forest  /  covariant  /  Yangtze River Basin  /  accuracy evaluation
徐志, 牟亚莉, 梁犁丽, 王贺龙. 考虑协变量的随机森林降水融合算法在长江流域的应用. 水电能源科学, 2023 , 41 (8) : 1 -4 . DOI: 10.20040/j.cnki.1000-7709.2023.20222455
Zhi XU, Ya-li MOU, Li-li LIANG, He-long WANG. Application of Stochastic Forest Precipitation Fusion Algorithm With Covariates in Yangtze River Basin[J]. Water Resources and Power, 2023 , 41 (8) : 1 -4 . DOI: 10.20040/j.cnki.1000-7709.2023.20222455
  • 国家自然科学基金项目(U2040212)
  • 中国长江三峡集团有限公司科研项目(202103429; 202203050)
2023年第41卷第8期
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文章信息
doi: 10.20040/j.cnki.1000-7709.2023.20222455
  • 接收时间:2022-11-21
  • 首发时间:2026-01-28
  • 出版时间:2023-08-25
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出版历史
  • 收稿日期:2022-11-21
  • 修回日期:2023-02-28
基金
国家自然科学基金项目(U2040212)
中国长江三峡集团有限公司科研项目(202103429; 202203050)
作者信息
    1.中国长江三峡集团有限公司科学技术研究院,北京 101199
    2.中国水利水电科学研究院,北京 100038
    3.浙江省水利河口研究院,浙江 杭州 310020

通讯作者:

梁犁丽(1982-),女,博士、正高级工程师,研究方向为水文学及水资源,E-mail:
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
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Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
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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