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《Journal of Glaciology and Geocryology》 2005-06
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Impact of Climate Warming on Summer-Autumn Crop Planting Structure in Gansu Province

LIU De-xiang~1, ZHAO Hong-yan~1, DONG An-xiang~2, YANG Su-hua~1,(1.Lanzhou Central Meteorology Observatory,Lanzhou Gansu 730020,China;2.Key Laboratory of Arid Climatic Change and ReductingDisaster in Gansu Province,Lanzhou Institute of Arid Meteorology,China Meteorological Administration,Lanzhou Gansu 730020,China)  
By analyzing the data of accumulative temperatures of above and below 0 ℃ and above 10 ℃ and planting areas of winter and spring wheat and corn,it is found that,in the dry farmland of middle Gansu province,the correlation between the accumulative temperature below 0 ℃ and planting area of winter wheat is significantly positive,but that between the accumulative temperature below 0 ℃ and planting area of spring wheat is significantly negative.The relation exhibits a significantly negative correlation between the accumulative temperature above 0 ℃ and the areas of irrigated spring wheat in Hexi and non-irrigated winter wheat in Southeast Gansu province.However,the relation exhibits a significantly positive correlation between accumulative temperature above 10 ℃ and the areas of maize in Hexi and Hedong.The area of winter wheat has expanded with climate warming,but the area of spring wheat has decreased in the middle Gansu province.The areas of winter wheat in the southeast Gansu province and spring wheat have reduced.Planting areas of corns have expanded rapidly in Gansu.Pronounced change of crops planting structure in summer-autumn can be seen.
【Fund】: 甘肃省科技攻关计划项目"甘肃干旱生态环境对全球气候变暖的响应及减灾技术的研究"(2GS042-A44-017)资助
【CateGory Index】: S162.5
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