[1]徐羽,许有鹏,吴艳飞,等.近50年重庆市气象干旱时空分布特征研究[J].水土保持研究,2016,23(06):363-368.
　XU Yu,XU Youpeng,WU Yanfei,et al.Temporal and Spatial Patterns of the Meteorological Drought in Chongqing City During Recent 50 Years[J].Research of Soil and Water Conservation,2016,23(06):363-368.
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近50年重庆市气象干旱时空分布特征研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年06期 页码: 363-368 栏目: 出版日期: 2016-12-28
Title:
Temporal and Spatial Patterns of the Meteorological Drought in Chongqing City During Recent 50 Years
作者:
徐羽1,2, 许有鹏1, 吴艳飞2, 徐刚2, 吴雷1
1. 南京大学 地理与海洋科学学院, 南京 210023;
2. 西南大学 地理科学学院, 重庆 400715
Author(s):
XU Yu1,2, XU Youpeng1, WU Yanfei2, XU Gang2, WU Lei1
1. School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China;
2. School of Geographic Sciences Southwest University, Chongqing, 400715, China
关键词:
气象干旱; 相对湿润指数; 干旱频率; 干旱强度; 重庆市
Keywords:
meteorological drought; relative humidity index; drought frequency; drought intensity; Chongqing City
分类号:
P429
摘要:
根据重庆市34个气象站点1960—2009年的气温、降水、日照时数等诸多气象因子观测资料，利用相对湿润指数法对重庆市近50年的气象干旱频率和干旱强度进行统计分析。通过ArcGIS空间插值、滑动t检验以及小波分析等方法分析了重庆市干旱频率和干旱强度的空间分布、突变年和振荡周期。结果表明：（1）近50年重庆市年、春、夏、伏、秋、冬干旱频率和干旱强度均呈现出明显的区域差异，干旱频率和强度均是冬季最高，夏季最低；（2）经滑动t检验发现，重庆市年干旱频率突变点为1982年前后的由多变少，年干旱强度突变点为1978年前后的由弱变强，其他季节各有不同；（3）重庆市年及各季节的干旱频率和干旱强度各具有不同的振荡周期。
Abstract:
The observed meteorological data of 34 meteorological stations from 1960 to 2009 in Chongqing City of China were collected and a relative humidity index of meteorological drought was used to analyze the temporal and spatial characteristics of drought frequency and intensity. Based on the methods of Inverse Distance Weighted methods on ArcGIS, running t-test and Morlet wavelet analysis, the temporal and spatial patterns of meteorological drought frequency and intensity, mutated years and oscillating periods were revealed. The results showed as follows:(1) the spatial distributions of drought frequency and intensity in whole year, spring, summer, hot season, autumn and winter were different. The drought frequency and intensity were the highest in winter, and the lowest in summer. (2) the abrupt change of drought frequency shifts from more to less level in 1982, and the abrupt change of drought intensity shifts from the weak to heavy level in 1978. And the abrupt change years of drought frequency and intensity are not the same in different durations. (3) the departure sequence vibrations of annual and seasonal drought frequency and intensity are different.

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备注/Memo

收稿日期:2015-10-24;改回日期:2015-11-27。
基金项目:国家自然科学基金面上项目（41371046）；水利部水利公益专项项目（201201072）；江苏省自然科学资助项目（BK20131276）；江苏省水利科学资助项目（2015003）
作者简介:徐羽(1989-),男,安徽寿县人,博士研究生,研究方向:水文学与水资源学。E-mail:xuyu906@163.com
通讯作者:许有鹏(1956-),男,江苏南京人,博士,教授,博士生导师,主要从事水文水资源及水环境研究。E-mail:xuyp305@163.com

更新日期/Last Update: 1900-01-01