生物土壤与生态 |
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Affect of Climate Warming on Crops Planting Structure in Arid Zone of Northwestern China |
LIU De-xiang1,2, DONG An-xiang1, LIANG Dong-sheng2, NING Hui-fang1 |
1.Institute of Arid Meteorology of China Meteorological Administration; Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province; Key Open Laboratory of Arid Climate Change and Disaster Reduction of China Meteorological Administration, Lanzhou 730020, China;2.Lanzhou Regional Climate Center, Lanzhou 730020, China |
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Abstract Correlation analysis results show that the yearly mean temperature has significantly negative correlation with the cultivation area of winter wheat in Xinjiang and with the cultivation area of spring wheat in arid regions in northwestern China, but has significantly positive correlation with the cultivation area of corn in arid regions in northwestern China and the cultivation areas of cotton in Xinjiang Province and in Hexi corridor of Gsnsu Province. Climate warming and thermal resource increasing have resulted in the fast decreasing of spring and winter wheat planted areas, whereas the planted areas of thermophyte corn and cotton quickly extend. The planting structure of summer and autumn crops has apparently changed.
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Received: 18 September 2006
Published: 20 September 2007
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