[1]黄庆忠,张强,李勤,等.基于SPEI的季节性干湿变化特征及成因探讨[J].自然灾害学报,2018,(02):130-140.[doi:10.13577/j.jnd.2018.0216]
 HUANG Qingzhong,ZHANG Qiang,LI Qin,et al.SPEI-based evaluation of seasonal dryness/wetness variations and related causes[J].,2018,(02):130-140.[doi:10.13577/j.jnd.2018.0216]
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基于SPEI的季节性干湿变化特征及成因探讨
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
期数:
2018年02期
页码:
130-140
栏目:
出版日期:
2018-04-28

文章信息/Info

Title:
SPEI-based evaluation of seasonal dryness/wetness variations and related causes
作者:
黄庆忠1 张强234 李勤1 史培军234 郑泳杰1 孔冬冬1
1. 中山大学 水资源与环境系, 广东 广州 510275;
2. 北京师范大学环境演变与自然灾害教育部重点实验室, 北京 100875;
3. 北京师范大学地表过程与资源生态国家重点实验室, 北京 100875;
4. 北京师范大学减灾与应急管理研究院, 北京 100875
Author(s):
HUANG Qingzhong1 ZHANG Qiang234 LI Qin1 SHI Peijun234 ZHENG Yongjie1 KONG Dongdong1
1. Department of Water Resources and Environment, SunYat-sen University, Guangzhou 510275, China;
2. Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China;
3. State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;
4. Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing 100875, China
关键词:
标准化降水蒸散指数干湿变化变化特征水汽通量小波分析
Keywords:
SPEIwetness/dryness variationschanging propertieswater vapor fluxwavelet analysis
分类号:
P4;S16;X43
DOI:
10.13577/j.jnd.2018.0216
摘要:
利用英国气候研究中心提供的Time-Series(TS)Version 3.23高分辨率气候栅格数据集以及NCEP再分析数据,根据SPEI方法计算得到标准化降水蒸散发指数,研究了1949—2014年中国区域干湿气候变化特征。结果表明:全国大部分地区呈现干旱化趋势,干旱化区域主要集中在100°E以东区域,而新疆西北部、柴达木盆地及青藏高原东北侧在春夏秋冬四季均呈现显著上升的湿润化趋势,春夏季的珠江流域南部地区有一小范围亦呈显著湿润化趋势。水汽通量的分析表明干燥气候地区主要受大陆气团影响,湿润气候地区主要受海洋气团影响,水汽的移动方向与大小可以从时空上解释干湿事件的发生。本文的研究结果可对中国地区农业灌溉与水资源管理提供科学依据。
Abstract:
Wetness/dryness variations across China in both space and time were investigated using the grid climate data of Time-Series (TS) Version 3.23. The SPEI technique was used to evaluate wetness and dryness conditions. The time interval under consideration is during 1949-2014. The results indicated that most regions of China experienced drying tendency and regions dominated by drying tendency are in east to 100°E. Meanwhile, significant wetting tendency was observed in northwest parts of Xinjiang, Qaidam Basin and northeast parts of the Tibet Plateau. Analysis of water vapor flux by air mass propagation indicated that dry regimes are attributed to continental air mass and wet regimes to oceanic air mass. Propagation of water vapor flux can thus explain the occurrence of wetness/dryness events in both space and time. The results of this study are helpful for management of agricultural irrigation and water resources across China.

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备注/Memo

备注/Memo:
收稿日期:2017-01-25;改回日期:2017-07-24。
基金项目:国家杰出青年科学基金(51425903);国家自然科学基金(41771536,41601023);基金委创新群体项目(41621061)
作者简介:黄庆忠(1993-),男,博士研究生,主要从事遥感水文与气象水文研究.E-mail:huangqzh5@163.com
通讯作者:张强(1974-),男,教授,博士,博士生导师,主要从事流域气象水文学研究、旱涝灾害机理、流域地表水文过程及其对气候变化的响应机制与机理以及流域生态需水等领域的研究.E-mail:zhangq68@bnu.edu.cn
更新日期/Last Update: 1900-01-01