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cje ›› 2005, Vol. ›› Issue (5): 503-507.

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Climate suitability change of winter wheat in Henan Province

QIAN Huaisui1, JIAO Shixing2, ZHAO Feng 3   

  1. 1. School of Geographical Sciences, Guangzhou University, Guangzhou 510405, China;
    2. Department of Geography, Anyang Teachers College, Anyang 455000, China;
    3. Agency of Science Press in Shanghai, Shanghai 200032, China
  • Received:2004-03-09 Revised:2004-07-25 Online:2005-05-10

Abstract: Employing the climate suitability degree model,the annual climate suitability change was calculated.The results showed that the fluctuation of precipitation suitability was very strong while that of temperature and sunbeam is less strong,and their vibrating amplitude has become weaker and weaker since 1980s.In terms of the change trend,temperature,sunbeam and climate suitability degree in turn increased at the speed of 0.003/10yr,0.005/10yr and 0.006/10yr,while precipitation suitability degree decreased at the speed of 0.002/10yr.

Key words: Rice fields, Nitrogen transformation, Nitrogen budget, Economic value, Ecosystem services

CLC Number: