Analysis of Drought Characteristics in the Huaihe River Basin in Recent 60 Years
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Abstract:
Drought is one of the major natural disasters in the Huaihe River Basin, which restricts the sustainable development of the society, economy, and agriculture. Based on the statistical analysis of the historical drought from 1949 to 2010 in the Huaihe River Basin, the drought frequencies in different seasons and drought season distribution, and the drought frequencies with different magnitudes and drought area distribution were determined for each county in the river basin. The distributions of drought season and drought area were plotted. The results showed that drought was prone to occur in spring-summer, summer, summer-autumn, and spring, and the drought frequencies in these seasons decreased. Moreover, moderate and mild droughts were prone to occur in the river basin, while the frequency of severe drought was low. The research results can provide the basic data for drought monitoring, forecasting, and early warning, and it can provide technical support for the drought mitigation and food safety in the Huaihe River Basin.
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