地理科学进展 ›› 2016, Vol. 35 ›› Issue (6): 758-767.doi: 10.18306/dlkxjz.2016.06.009
出版日期:
2016-06-23
发布日期:
2016-06-23
作者简介:
作者简介:李运刚(1983-),男,云南大理人,博士,副研究员,主要从事水文水资源研究,E-mail:
基金资助:
Yungang LI(), Jiaonan HE, Xue LI
Online:
2016-06-23
Published:
2016-06-23
Supported by:
摘要:
本文基于红河流域43个气象站1961-2012年逐月降水、气温数据以及干支流2个水文站1956-2013年逐月流量数据,采用标准化降水蒸散指数(SPEI)和径流干旱指数(SDI)分析流域气象水文干旱的演变特征,并探讨水文干旱对气象干旱的响应。结果表明:①1961-2012年期间,流域总体上表现出干旱化的趋势,季节变化上春季有变湿的趋势,而夏、秋、冬三季有变干的趋势,但趋势并不显著。干旱频率季节空间分布差异较大,春旱和冬旱发生频率较高。从干旱范围来看,春旱范围呈缩小的趋势,夏旱、秋旱和冬旱范围表现出不同程度的增大趋势;②1956-2013年期间,流域水文干旱表现出加剧的趋势,其中1958-1963、1975-1982、1987-1993、2003-2006和2009-2013年为水文干旱多发期,近10年来频率明显增加;③流域水文干旱滞后于气象干旱1~8个月,气象和水文干旱事件的干旱历时、严重程度和强度之间具有紧密的相关性,流域气象干旱是水文干旱的主要驱动力。
李运刚, 何娇楠, 李雪. 基于SPEI和SDI指数的云南红河流域气象水文干旱演变分析[J]. 地理科学进展, 2016, 35(6): 758-767.
Yungang LI, Jiaonan HE, Xue LI. Hydrological and meteorological droughts in the Red River Basin of Yunnan Province based on SPEI and SDI Indices[J]. PROGRESS IN GEOGRAPHY, 2016, 35(6): 758-767.
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