[1]靖娟利,徐 勇,王永锋,等.1960—2019年西南岩溶区旱涝时空演变特征[J].水土保持研究,2021,28(05):179-186.
　JING Juanli,XU Yong,WANG Yongfeng,et al.Spatiotemporal Variation Characteristics of Drought and Flood in the Southwest Karst Area from 1960 to 2019[J].Research of Soil and Water Conservation,2021,28(05):179-186.
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1960—2019年西南岩溶区旱涝时空演变特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 28 期数: 2021年05期 页码: 179-186 栏目: 出版日期: 2021-08-20
Title:
Spatiotemporal Variation Characteristics of Drought and Flood in the Southwest Karst Area from 1960 to 2019
文章编号:
1005-3409(2021)05-0179-08
作者:
靖娟利1,2,徐 勇1,王永锋1,2,窦世卿1,殷 敏1,2
(1.桂林理工大学 测绘地理信息学院,广西 桂林 541004; 2.广西空间信息与测绘重点实验室,广西 桂林 541004)
Author(s):
JING Juanli1,2,XU Yong1,WANG Yongfeng1,2,DOU Shiqing1,YIN Min1,2
(1.College of Geomatics and Geoinformation,Guilin University of Technology,Guilin,Guangxi 541004,China; 2.Guangxi Key Laboratory of Spatial Information and Geomatics,Guilin,Guangxi 541004,China)
关键词:
SPI;  西南岩溶区;  趋势分析;  Mann-Kendall检验;  Hurst指数
Keywords:
SPI;  southwest karst area;  trend analysis;  Mann-Kendall test;  Hurst index
分类号:
P426.616
文献标志码:
A
摘要:
针对西南岩溶区旱涝灾害频繁发生的现象,基于1960—2019年68个气象站点逐月降水观测资料,计算多个时间尺度的标准化降水指数(SPI),并采用ANUSPLIN气象插值方法、Sen-Median趋势分析、Mann-Kendall检验和Hurst指数,研究了近60年西南岩溶区旱涝时空演变特征。结果表明:(1)不同时间尺度的SPI反映的旱涝等级及频率具有一定差异性,旱涝等级以轻—中等为主;(2)年尺度SPI呈不显著下降趋势,整体呈现出由雨涝向干旱变化的趋势; 春、秋两季SPI呈不显著下降趋势(p>0.05),夏、冬两季SPI呈不显著上升趋势(p>0.05);(3)年尺度SPI以下降趋势为主,集中分布在云南、贵州、重庆和湖北等地区; 季节SPI空间变化趋势具有一定差异性,春、夏、秋三季SPI以下降趋势为主,冬季SPI以上升趋势为主,但绝大部分区域变化趋势不显著(p>0.05);(4)SPI呈持续上升的区域占39.76%,集中分布在四川、云南、广东、广西等地区; 呈持续下降的区域占50.33%,主要分布在云南、贵州和重庆。研究结果可以为区域旱涝预警、制定减灾应对策略等方面提供依据。
Abstract:
In view of frequent occurrence of drought and flood in southwest karst area,the multiscale Standard Precipitation Index(SPI)was calculated based on monthly precipitation data derived from sixty-eight meteorological stations from 1960 to 2019. The spatial and temporal variation of SPI from 1960—2019 were quantitively analyzed by using ANUSPLIN meteorological interpolation method,Sen-Median method,Mann-Kendall test,and Hurst index. Results showed that:(1)there were some differences of drought and flood levels and frequencies among SPI at different time scales,and the levels of drought and flood were mainly dominated by light and medium;(2)the annual SPI showed an insignificant declining trend and had a changing trend from waterlogging to drought; the changing trend of seasonal SPI had some differences,SPI had an insignificant decrease trend in spring and autumn(p>0.05),but an insignificant increasing trend in summer and winter was observed(p>0.05);(3)the annual SPI presented a downward trend,spatially concentrated in Yunnan,Guizhou,Chongqing,Hubei and other regions; the spatial variation of seasonal SPI exhibited certain difference; SPI mainly showed a downward trend in spring,summer and autumn,while an upward trend was found in winter; however,the trends of most regions were not significant(p>0.05);(4)SPI with a continuous increasing accounted for 39.76% at the study area,mainly concentrated in Sichuan,Yunnan,Guangdong,Guangxi,whereas SPI with a continuous decreasing accounted for 50.33%,mainly distributed in Yunnan,Guizhou and Chongqing. The results of this study can provide the basis for regional drought and flood warning and disaster mitigation strategies making.

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备注/Memo

收稿日期:2020-08-29 修回日期:2020-11-09
资助项目:广西八桂学者专项项目; 国家自然科学基金项目(42061059); 广西自然科学资助项目(2020GXNSFBA297160); 广西空间信息与测绘重点实验室资助项目(16-380-25-08)
第一作者:靖娟利(1977—),女,陕西长安人,副教授,硕士,主要研究方向为遥感与GIS应用。E-mail:jjlgut2008@163.com

更新日期/Last Update: 2021-08-20