| Analysis about relationship between flood disaster and climate change in Guangzhong region within 1500 years |
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| DOI：10.7606/j.issn.1000-7601.2008.02.47 |
| Key Words: flood disaster climate change historical period Guangzhong region |
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| Abstract: |
| According to analysis of the data of flood disaster in Guangzhong region in different historical period,the flood frequency is statisticed per century from 500 to 2006 and the climate variation is analysised during the 1500 years.The following conclusion can be drawn: the climate alternate change frequency is high and the flood disaster is severe in the history.The hundred-year flood disaster apperaring frequency is 21,34,12 in the 600～1000 A.D,1300～1900 A.D and 1900～2000 A.D respectively.Simultaneously,we also draw a conclusion that the climate and the flood disaster have a close correlation.The correlation is that the apperance of hundred-yesr flood disaster often goes with the climate exceptional undulation and the climate undulation induces the precipitation nonuniformity,which induced the flood disaster highly frequently occurrence in the local.The flood disaster frequency is higher when the climate breakly variety while it is lower when the climate ease up. |
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