| Assessment on the influence of drought climate on main crop yield in Southeast of Gansu |
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| DOI：10.7606/j.issn.1000-7601.2007.01.35 |
| Key Words: drought climate crop yield assessment Southeast of Gansu |
| Author Name | Affiliation | | PU Jin-yong | Lanzhou Institute of Arid Meteorology China Meteorological Administration Key Laboratory of Arid Climatic Changing and Reducing Disaster of Gansu Province, Lanzhou, Gansu 730020,China；The Agrometeorological Experiment Station of Tianshui,Tianshui,Gansu 741020,China | | ZHANG Cun-jie | Lanzhou Institute of Arid Meteorology China Meteorological Administration Key Laboratory of Arid Climatic Changing and Reducing Disaster of Gansu Province, Lanzhou, Gansu 730020,China | | YAO Xiao-ying | The Tianshui Meteorological Bureau,Tianshui,Gansu 741000,China | | DENG Zhen-yong | Lanzhou Institute of Arid Meteorology China Meteorological Administration Key Laboratory of Arid Climatic Changing and Reducing Disaster of Gansu Province, Lanzhou, Gansu 730020,China | | Liu Wei-min | The Tianshui Meteorological Bureau,Tianshui,Gansu 741000,China | | MIAO Ju-quan | The TanChang Meteorological Bureau,Tanchang,Gansu 745800,China |
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| Abstract: |
| Based on the monthly precipitation,yearly precipitation of 7 weather stations in Tianshui 1961～2005(represent station 1936～2005),frequency of drought disaster and the yield reduction caused by drought disaster,the frequency of drought disaster in temporal distribution and degree of loss had been analyzed.The results showed that the frequency of drought had been increased from 1961 to 2005;the highest frequency of drought disaster was in hot summer while the lowest was in spring in a year.The effective coefficient of drought disaster to main crop has been given and the assessment of degree of risk to planting crop also has been made. |
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