| Study on influence of arid climate change to drought disaster in Gansu and technique of preventing drought and reducing disaster |
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| DOI：10.7606/j.issn.1000-7601.2007.04.18 |
| Key Words: Gansu Province drought disaster arid climate change response reducing disaster technique |
| Author Name | Affiliation | | DENG Zhen-yong | Institute of Arid Meteorology, China Meteorological Administration, Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province, Key Open Laboratory of Arid Change and Disaster Reduction of CMA, Lanzhou 730020 | | ZHANG Yu-fei | Lanzhou Central Meteorological Observatory, Lanzhou 730020 | | LIU De-xiang | Lanzhou Central Meteorological Observatory, Lanzhou 730020 | | MAO Yu-qin | Shandan Meteorological Bureau, Zhangye 734100 | | JIN Zheng-ping | Jiuquan Meteorological Bureau, Jiuquan 735000 | | XUE Wan-xiao | Information and Equipment Center of GMB, Lanzhou 730020 | | ZHAO Hong | Institute of Arid Meteorology, China Meteorological Administration, Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province, Key Open Laboratory of Arid Change and Disaster Reduction of CMA, Lanzhou 730020 | | YUAN Zhi-peng | Gansu Meteorological Bureau, Lanzhou 730020, China |
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| Abstract: |
| Based on the precipitation data, the main characteristic of arid climate change in northwest region was analyzed. The results showed that the precipitation obviously decreased in summer in 1990s and drought trend mainly took place in the east in northwest region, aridity has occured in successive years, especially in Hedong region in Gansu province. Arid climate brought serious disaster. It was in 1990s in Gansu that the drought was very frequent and serious, in which 1995 was the most serious year and 2000 was the second, the disaster rate were 45% and 35% respectively. The main type of drought disaster that resulted in reduction of yields of summer grain crops was the arid which happened in late spring and early summer and successively in summer and autumn. Aridity trend which caused by climatic change becomes more and more distinct. So, in order to reduce drought disaster, we should take general measures, particularly should strengthen the study on monitoring, forecasting and countermeasure of arid climate and disaster such |
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