Identification, measurement and spatiotemporal evolution of drought and pluvial events in China based on a three-dimensional perspective

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2025-04-16 DOI:10.1016/j.ejrh.2025.102384

Weiqi Xiang , Xiaohua Yang , Zeji Yi , Boyang Sun , Dehui Bian , Meishui Li , Zesi Pan , Yiqing Jia

{"title":"Identification, measurement and spatiotemporal evolution of drought and pluvial events in China based on a three-dimensional perspective","authors":"Weiqi Xiang , Xiaohua Yang , Zeji Yi , Boyang Sun , Dehui Bian , Meishui Li , Zesi Pan , Yiqing Jia","doi":"10.1016/j.ejrh.2025.102384","DOIUrl":null,"url":null,"abstract":"<div><h3>Study region</h3><div>China</div></div><div><h3>Study focus</h3><div>China is a country with frequent drought and pluvial disasters. It is of great significance to accurately identify and measure such events and study their spatiotemporal evolution rules for dealing with future events. This study comprehensively investigates large-scale and long-term drought and pluvial events in China based on a spatiotemporal three-dimensional perspective at daily scale. This study analyzed the overall change trend of drought and pluvial in China in the past 58 years, carried out time series and frequency analysis on the intensity of 266 pluvial events and 1078 drought events in humid and semihumid areas of China and studied the geographical spatial pattern.</div></div><div><h3>New hydrological insights for the region</h3><div>Unlike the monthly distribution characteristics, the morphological parameters of drought and pluvial events exhibit similar patterns. From 1961–2018, the Northwestern regions, Southwestern regions and Northeastern regions tended to become drier, while the Central regions and Southern regions tended to become wetter. Around 2011, most parts of China significantly shifted from drought to wet conditions. Drought and pluvial events show significant quasi-periodicity, with periods of 2–3 years and 11 years, respectively. The centers of drought events exhibit significant spatial variability, whereas the centers of pluvial events have a relatively balanced geographical distribution.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"59 ","pages":"Article 102384"},"PeriodicalIF":4.7000,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hydrology-Regional Studies","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214581825002095","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"WATER RESOURCES","Score":null,"Total":0}

引用次数: 0

Abstract

Study region

China

Study focus

China is a country with frequent drought and pluvial disasters. It is of great significance to accurately identify and measure such events and study their spatiotemporal evolution rules for dealing with future events. This study comprehensively investigates large-scale and long-term drought and pluvial events in China based on a spatiotemporal three-dimensional perspective at daily scale. This study analyzed the overall change trend of drought and pluvial in China in the past 58 years, carried out time series and frequency analysis on the intensity of 266 pluvial events and 1078 drought events in humid and semihumid areas of China and studied the geographical spatial pattern.

New hydrological insights for the region

Unlike the monthly distribution characteristics, the morphological parameters of drought and pluvial events exhibit similar patterns. From 1961–2018, the Northwestern regions, Southwestern regions and Northeastern regions tended to become drier, while the Central regions and Southern regions tended to become wetter. Around 2011, most parts of China significantly shifted from drought to wet conditions. Drought and pluvial events show significant quasi-periodicity, with periods of 2–3 years and 11 years, respectively. The centers of drought events exhibit significant spatial variability, whereas the centers of pluvial events have a relatively balanced geographical distribution.

查看原文本刊更多论文

基于三维视角的中国干旱和冲积事件的识别、测量与时空演变

研究区域中国研究重点中国是一个旱涝灾害频发的国家。准确识别和测量此类事件，研究其时空演化规律，对未来事件的处理具有重要意义。本文基于日尺度的时空三维视角，对中国大尺度长期旱涝事件进行了综合研究。分析了近58年来中国旱涝的总体变化趋势，对中国湿润半湿润地区266次雨涝事件和1078次干旱事件的强度进行了时间序列和频率分析，并研究了地理空间格局。不同于月分布特征，旱涝事件的形态参数表现出相似的模式。1961-2018年，西北地区、西南地区和东北地区呈干旱趋势，中部和南部地区呈湿润趋势。2011年前后，中国大部分地区明显由干旱转为湿润。旱涝事件具有明显的准周期性，周期分别为2 ~ 3 a和11 a。干旱事件中心具有显著的空间变异性，而雨发事件中心具有相对均衡的地理分布。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Hydrology-Regional Studies Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)

CiteScore

6.70

自引率

8.50%

发文量

284

审稿时长

60 days

期刊介绍： Journal of Hydrology: Regional Studies publishes original research papers enhancing the science of hydrology and aiming at region-specific problems, past and future conditions, analysis, review and solutions. The journal particularly welcomes research papers that deliver new insights into region-specific hydrological processes and responses to changing conditions, as well as contributions that incorporate interdisciplinarity and translational science.