Article(id=1311351176700986336, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1311351152067830064, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2026.20250288, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1740067200000, receivedDateStr=2025-02-21, revisedDate=1742832000000, revisedDateStr=2025-03-25, acceptedDate=1743523200000, acceptedDateStr=2025-04-02, onlineDate=1790580084252, onlineDateStr=2026-09-28, pubDate=1769270400000, pubDateStr=2026-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790580084252, onlineIssueDateStr=2026-09-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790580084252, creator=13701087609, updateTime=1790580084252, updator=13701087609, issue=Issue{id=1311351152067830064, tenantId=1146029695717560320, journalId=1205116964453384197, year='2026', volume='44', issue='1', pageStart='1', pageEnd='246', issueExtLink='null', onlineDate='null', pubDate='1769270400000', pubDateStr='2026-01-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1790580078378, creator='13701087609', updateTime=1790588459421, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1311386304772927717, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1311351152067830064, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1311386304772927718, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1311351152067830064, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=20, endPage=23, ext={EN=ArticleExt(id=1311351176944255969, articleId=1311351176700986336, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Analysis of Daily Scale Spatial and Temporal Processes of Sustained Extreme Drought in Sichuan and Chongqing in 2022, columnId=null, journalTitle=Water Resources and Power, columnName=null, runingTitle=null, highlight=null, articleAbstract=

To analyze the daily-scale spatiotemporal process of the persistent extreme drought in Sichuan and Chongqing in 2022, the daily-scale drought index was calculated based on the ERA5-Land meteorological data from 2018 to 2022. Three-threshold tour theory was used to identify persistent extreme drought events in the Sichuan-Chongqing Region in 2022. The duration, intensity, and frequency of the drought across different terrain types were extracted, and the spatial heterogeneity of drought processes was revealed. The results show that the majority of pixels in the Sichuan-Chongqing region were subjected to two drought events in 2022 and the worst of the drought occurred on 22 August. The average duration of persistent extreme drought in Sichuan-Chongqing region during the summer was 67 days, with the longest duration being 159 days and the shortest being 17 days, showing a increasing trend from west to east. The earliest drought started on 16 June and the latest on 28 August. The correlation between drought severity and drought duration reached 0.98, and their trends were consistent. In different terrain areas, the first type of drought process occurred in spring, with an average of 3.5 drought events, an average total duration of 166 days and an average severity of 193.63. The second type of drought with no drought in spring occurred on average 2.2 times, with an average duration of 120.6 days and an average severity of 136.27, which is only 70.38% of the first type. The research results can provide theoretical basis and technical support for regional daily drought monitoring.

, authors=Xiao-ning LU1, 2, Wen-yu SHEN1, Dan-dan XU1, Wei-xin XU1, Shi-qi YANG2, 3, authorsList=Xiao-ning LU, Wen-yu SHEN, Dan-dan XU, Wei-xin XU, Shi-qi YANG, authorCompany=null, correspAuthors=null, 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=1311351177292383202, articleId=1311351176700986336, tenantId=1146029695717560320, journalId=1205116964453384197, language=CN, title=川渝2022年持续极端干旱日尺度时空过程分析, columnId=1207627659488632924, journalTitle=水电能源科学, columnName=水文水资源与环境, runingTitle=null, highlight=null, articleAbstract=

为分析2022年川渝持续极端干旱日尺度时空过程,基于2018~2022年ERA5-Land气象数据计算日尺度干旱指数,通过三阈值游程理论对川渝地区2022年持续极端干旱过程进行识别,并基于不同复杂地形区提取干旱历时、干旱烈度和干旱频次,揭示川渝地区干旱过程异质性。结果表明,2022年川渝地区各像元发生干旱次数以2次居多,旱情最严重发生在8月22日;川渝地区夏季的持续极端干旱最早始于6月16日,最晚出现在8月28日;干旱平均历时达67 d,历时最长为159 d,最短为17 d,呈由西向东递增的趋势;干旱烈度与干旱历时相关性达到0.98,变化趋势也一致。不同地形区中第一类干旱过程发生了春季干旱,平均干旱次数为3.5次,平均总历时166 d,平均烈度达到193.63;第二类(春季无旱)干旱次数平均为2.2次,平均历时120.6 d,平均烈度为136.27,仅为第一类的70.38%。研究结果可为区域日尺度干旱监测提供理论依据和技术支持。

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卢晓宁(1980-),女,博士、副教授,研究方向为资源环境遥感,E-mail:

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川渝2022年持续极端干旱日尺度时空过程分析
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卢晓宁 1, 2 , 沈文宇 1 , 徐丹丹 1 , 徐维新 1 , 杨世琦 2, 3
水电能源科学 | 水文水资源与环境 2026,44(1): 20-23
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水电能源科学 |水文水资源与环境 2026 , 44 (1) : 20 -23
川渝2022年持续极端干旱日尺度时空过程分析
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卢晓宁1, 2 , 沈文宇1, 徐丹丹1, 徐维新1, 杨世琦2, 3
作者信息
  • 1.成都信息工程大学资源环境学院,四川 成都 610225
  • 2.卫星遥感数字化应用创新重点实验室,重庆 401147
  • 3.重庆市气象科学研究所,重庆 401147
作者简介:

卢晓宁(1980-),女,博士、副教授,研究方向为资源环境遥感,E-mail:

Analysis of Daily Scale Spatial and Temporal Processes of Sustained Extreme Drought in Sichuan and Chongqing in 2022
Xiao-ning LU1, 2 , Wen-yu SHEN1, Dan-dan XU1, Wei-xin XU1, Shi-qi YANG2, 3
Affiliations
  • 1.College of Resources and Environment, Chengdu University of Information and Technology, Chengdu 610225, China
  • 2.Key Laboratory of Remote Sensing Application and Innovation, Chongqing 401147, China
  • 3.Chongqing Meteorological Service, Chongqing 401147, China
出版时间: 2026-01-25 doi: 10.20040/j.cnki.1000-7709.2026.20250288
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为分析2022年川渝持续极端干旱日尺度时空过程,基于2018~2022年ERA5-Land气象数据计算日尺度干旱指数,通过三阈值游程理论对川渝地区2022年持续极端干旱过程进行识别,并基于不同复杂地形区提取干旱历时、干旱烈度和干旱频次,揭示川渝地区干旱过程异质性。结果表明,2022年川渝地区各像元发生干旱次数以2次居多,旱情最严重发生在8月22日;川渝地区夏季的持续极端干旱最早始于6月16日,最晚出现在8月28日;干旱平均历时达67 d,历时最长为159 d,最短为17 d,呈由西向东递增的趋势;干旱烈度与干旱历时相关性达到0.98,变化趋势也一致。不同地形区中第一类干旱过程发生了春季干旱,平均干旱次数为3.5次,平均总历时166 d,平均烈度达到193.63;第二类(春季无旱)干旱次数平均为2.2次,平均历时120.6 d,平均烈度为136.27,仅为第一类的70.38%。研究结果可为区域日尺度干旱监测提供理论依据和技术支持。

干旱  /  日尺度  /  标准化降水蒸散发指数  /  川渝地区

To analyze the daily-scale spatiotemporal process of the persistent extreme drought in Sichuan and Chongqing in 2022, the daily-scale drought index was calculated based on the ERA5-Land meteorological data from 2018 to 2022. Three-threshold tour theory was used to identify persistent extreme drought events in the Sichuan-Chongqing Region in 2022. The duration, intensity, and frequency of the drought across different terrain types were extracted, and the spatial heterogeneity of drought processes was revealed. The results show that the majority of pixels in the Sichuan-Chongqing region were subjected to two drought events in 2022 and the worst of the drought occurred on 22 August. The average duration of persistent extreme drought in Sichuan-Chongqing region during the summer was 67 days, with the longest duration being 159 days and the shortest being 17 days, showing a increasing trend from west to east. The earliest drought started on 16 June and the latest on 28 August. The correlation between drought severity and drought duration reached 0.98, and their trends were consistent. In different terrain areas, the first type of drought process occurred in spring, with an average of 3.5 drought events, an average total duration of 166 days and an average severity of 193.63. The second type of drought with no drought in spring occurred on average 2.2 times, with an average duration of 120.6 days and an average severity of 136.27, which is only 70.38% of the first type. The research results can provide theoretical basis and technical support for regional daily drought monitoring.

drought  /  daily scale  /  SPEI  /  Sichuan and Chongqing regions
卢晓宁, 沈文宇, 徐丹丹, 徐维新, 杨世琦. 川渝2022年持续极端干旱日尺度时空过程分析. 水电能源科学, 2026 , 44 (1) : 20 -23 . DOI: 10.20040/j.cnki.1000-7709.2026.20250288
Xiao-ning LU, Wen-yu SHEN, Dan-dan XU, Wei-xin XU, Shi-qi YANG. Analysis of Daily Scale Spatial and Temporal Processes of Sustained Extreme Drought in Sichuan and Chongqing in 2022[J]. Water Resources and Power, 2026 , 44 (1) : 20 -23 . DOI: 10.20040/j.cnki.1000-7709.2026.20250288
  • 风云卫星先行计划资助项目(FY-APP-2024.0404)
  • 国家自然科学基金面上项目(41971328)
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doi: 10.20040/j.cnki.1000-7709.2026.20250288
  • 接收时间:2025-02-21
  • 首发时间:2026-09-28
  • 出版时间:2026-01-25
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  • 收稿日期:2025-02-21
  • 修回日期:2025-03-25
  • 录用日期:2025-04-02
基金
风云卫星先行计划资助项目(FY-APP-2024.0404)
国家自然科学基金面上项目(41971328)
作者信息
    1.成都信息工程大学资源环境学院,四川 成都 610225
    2.卫星遥感数字化应用创新重点实验室,重庆 401147
    3.重庆市气象科学研究所,重庆 401147
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
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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