[1]JIANG He-wen,GUO Ting-ting,BAO Ying,et al.Spatiotemporal Distribution of Drought and Flood Disasters over the Last 50 Years of Liaoning Province[J].Research of Soil and Water Conservation,2012,19(02):29-33.
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Spatiotemporal Distribution of Drought and Flood Disasters over the Last 50 Years of Liaoning Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 02
Page number:
29-33
Column:
Public date:
2012-04-20
- Title:
- Spatiotemporal Distribution of Drought and Flood Disasters over the Last 50 Years of Liaoning Province
- Keywords:
- Liaoning Province; drought and flood; Z-index; spatiotemporal change; precipitation concentration degree
- CLC:
- P426.616
- DOI:
- -
- Abstract:
- Based on the daily precipitation data from 1960 to 2009 of 49 stations in Liaoning Province,temporal trend and spatial distribution of annual and seasonal drought and flood disasters were discussed according to the drought and flood region index which is defined by the grade division of Z-index of single station.The results show that annual drought,summer drought and autumn drought index have increasing trend,and temporal trend of spring drought index is not obvious over the last 50 years.There are both decreasing trend of annual and summer flood index.The spatial distribution of either annual drought or seasonal drought shows that the highest frequency regions are in the west and northwest Liaoning Province.Annual drought,spring drought and summer drought have lower frequency in northeast Liaoning Province,and the lowest frequency regions of autumn drought are in the east and the southeast.The spatial distribution of annual flood and summer flood disaster is similar,the highest frequency regions are in the east and the southeast,and the lowest is in the west of Liaoning Province.There is some correlation between severity of drought and flood disasters and the concentration degree of precipitation.
- References:
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1900-01-01