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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (2): 382-389    DOI: 10.7522/j.issn.1000-694X.2013.00053
Weather and Climate     
Trend of the Eastern Boundary of Semiarid Zone in Northeast China in 1961-2010
WANG Wei, CHANG Xue-li, LIU Liang-xu, YUE Xi-yuan
College of Geography and Planning, Ludong University, Yantai 264025, Shandong, China
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Abstract  

The boundary variation of climatic zone is one of the sensitive indicators to climate change at large geographical scale, especially for semiarid zone. Aridity index, which is calculated with precipitation and temperature data as division index, had been analyzed by using Kriging spatial interpolation method based on meteorological data in recent decades of Northeast China in 1961-2010. In addition, different temporal scales had been used to analyze the fluctuation trend of the eastern boundary of semiarid zone in Northeast China. Results showed that the eastern boundary of semiarid zone in Northeast China had expanded to east and south generally, the variation was mainly affected by temporal accumulative effects. In fifty-year scale, the zone reached as large as 285 648.4 km2. Analysis also indicated that precipitation decrease was a main driving factor on the variation of the eastern boundary of semiarid zone in northeastern China, and the temperature increase was another main factor.

Key words:  aridity index      eastern boundary of semiarid zone      climate change      Northeast China     
Received:  20 September 2012      Published:  29 October 2012
ZTFLH:  P467  

Cite this article: 

WANG Wei, CHANG Xue-li, LIU Liang-xu, YUE Xi-yuan. Trend of the Eastern Boundary of Semiarid Zone in Northeast China in 1961-2010. JOURNAL OF DESERT RESEARCH, 2013, 33(2): 382-389.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00053     OR     http://www.desert.ac.cn/EN/Y2013/V33/I2/382

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