灾害学Issue(3)：198-203,6.DOI:10.3969/j.issn.1000-811X.2015.03.036
基于S PE I的北江飞来峡流域干旱时空演变特征分析
Analysis on Spatial and Temporal Characteristics of Drought in the Feilaixia Catchment of Beijiang River Based on SPEI
摘要
Abstract
Drought events occurred frequently because of climate warming.Based on monthly precipitation and temperature data from 28 stations (24 rainfall stations and 4 meteorological stations)during the period 1969 -2011 in the Feilaixia catchment of the Beijiang River basin,the standardized precipitation evapotranspiration index (SPEI)is calculated.The multi-scale spatial and temporal characteristics of drought are analyzed using the Mann-Kendall trend test method.The results show that the SPEI is a suitable index to describe the variation of wet and dry spells.Overall,the frequency of drought and the proportion of severe drought show increasing trends in the study area.A significant trend of drought is found in the upstream area and downstream area near the outlet.Fur-thermore,the trends of drought become more significant and more stable with the increase of time scales.关键词
干旱/标准化降水蒸散指数/飞来峡流域/时空特征/趋势稳定性Key words
drought/standardized precipitation evapotranspiration index (SPEI)/Feilaixia catchment/spa-tial and temporal characteristics/stability of trends分类
资源环境引用本文复制引用
冼卓雁,武传号,黄国如..基于S PE I的北江飞来峡流域干旱时空演变特征分析[J].灾害学,2015,(3):198-203,6.基金项目
水利部公益性行业科研专项经费项目（201301093，201401048）；华南理工大学亚热带建筑科学国家重点实验室自主研究课题项目 （）
