| The characteristics of agricultural drought disaster and its impact on food security in Anhui Province |
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| DOI：10.7606/j.issn.1000-7601.2009.05.04 |
| Key Words: drought disaster food security agriculture Anhui Province |
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| Abstract: |
| Based on the statistical data of natural disasters and grain yields from 1949 to 2007, the dynamic change of agricultural drought disaster and food security in Anhui Province were analyzed.The impact of agricultural drought disaster on food security was also discussed by using the methods of comparative analysis, correlation analysis and multiple linear regression analysis.The results indicate that: (1) The disaster takes place almost every year and light and heavy agricultural droughts appear alternatively in a cycle of about 5-10 years. (2) The relationship between the annual gradient of total grain yield, yield per unit area, planting area and disaster-affected/suffering area rates, the ratio of disaster-affected to suffering areas, anomaly indices of disaster-affected/suffering area rates is significant negative correlation respectively.In all the indices of agricultural drought disaster, the influences of the ratio of disaster-affected to suffering areas, anomaly indices of disaster-affected/suffering area rates on grain yields are more significant than others.The results of this paper can give some references for agricultural disaster reduction and food security in Anhui Province. |
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