Impact of climate change on flood and drought events in Huaihe River Basin, China

被引：64
|
作者：
Yang, Chuanguo [1 ]
Yu, Zhongbo [1 ,2 ]
Hao, Zhenchun [1 ]
Zhang, Jiangyun [3 ]
Zhu, Jianting [4 ]
机构：
[1] Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Jiangsu, Peoples R China
[2] Univ Nevada, Dept Geosci, Las Vegas, NV 89154 USA
[3] Nanjing Hydraul Res Inst, Dept Hydrol & Water Resources, Nanjing 210032, Jiangsu, Peoples R China
[4] Desert Res Inst, Div Hydrol Sci, Las Vegas, NV 89119 USA
来源：
HYDROLOGY RESEARCH | 2012年 / 43卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
climate change; drought; flood; Huaihe River Basin; hydrologic simulation; LAST MILLENNIUM; YANGTZE DELTA; MODEL; SIMULATIONS; STREAMFLOW;
D O I：
10.2166/nh.2011.112
中图分类号：
TV21 [水资源调查与水利规划];
学科分类号：
081501 ;
摘要：
The impact of climate change on floods and droughts in Huaihe River Basin is studied using a coupled land-surface hydrology model and continuous wavelet transform technique. Observed temperature in the basin has increased by approximately 0.228 degrees C per decade since 1951. Observed precipitation and simulated and observed streamflows are used to grade flood and drought events. Two composite grading indices derived from the three series using different weight values are defined for reducing uncertainties caused by errors of observation and simulation and the effect of human activity on observed streamflow. The frequency of flood and drought events is quantified using the Morlet wavelet transform and compared with the trend of average temperature to test for any relationship between climate change and flood/drought frequency. This study shows that flood and drought events have occurred more frequently since the 1980s. The trend of flood and drought events is positively related to climate warming with a coefficient of determination of 0.88 in the Huaihe River Basin.
引用
收藏
页码：14 / 22
页数：9
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