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| Changes to the Natural Regional Boundaries in China During 1961-2007 |
| YU Zhen-Yan,FAN Guang-Zhou,DONG Yi-Ping,WANG Lei,HUA Wei,ZHOU Ding-Wen |
| 1 Zhejiang Climate Center, Hangzhou 310017, China;2 College of Atmospheric Sciences, Chengdu University of Information Technology (CUIT), Chengdu 610225, China;2 College of Atmospheric Sciences, Chengdu University of Information Technology (CUIT), Chengdu 610225, China;2 College of Atmospheric Sciences, Chengdu University of Information Technology (CUIT), Chengdu 610225, China;2 College of Atmospheric Sciences, Chengdu University of Information Technology (CUIT), Chengdu 610225, China;2 College of Atmospheric Sciences, Chengdu University of Information Technology (CUIT), Chengdu 610225, China |
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Abstract Daily temperature data from 599 stations across China for the years 1961 to 2007 were used to analyze the changes in the natural regional boundaries. The results show that the accumulated temperature ≥ 10°C and its duration changed dramatically from the end of 1990s to the early 21st century. The amplitude of natural regional boundaries was greater in the 21st century than it was in the 20th century. In the eastern region of China, the climatic zones were migrating generally northward, with the northern edge of the subtropical zone and the eastern section of the warm temperate zone showing an obvious northward shift of up to 1?3° of latitude. The climatic zones moved south in the Qinghai- Tibet Plateau, western Inner Mongolia, and some areas of western Xinjiang, and slightly to the north in other parts of the western region.
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Received: 02 March 2011
Revised: 16 May 2011
Accepted: 18 May 2011
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