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Predicting the impact of global warming on the geographical distribution pattern of Quercus variabilis in China.

LI Yao, ZHANG Xing-wang, FANG Yan-ming   

  1. (College of Forest Resource and Environment, Nanjing Forestry University, Nanjing 210037, China)
  • Online:2014-12-18 Published:2014-12-18

Abstract:

The geographical distribution of Quercus variabilis in China with its climate characteristics was analyzed based on DIVA-GIS which was also used to estimate the response of future potential distribution to global warming by Bioclim and Domain models. Analysis results showed the geographical distribution of Q. variabilis could be divided into 7 subregions: Henduan Mountains, YunnanGuizhou Plateau, North China, East China, LiaodongShandong Peninsula, Taiwan Island, and QinlingDaba Mountains. These subregions are across 7 temperature zones, 2 moisture regions and 17 climatic subregions, including 8 climate types. The modern abundance center of Q. variabilis is Qinling, Daba and Funiu mountains. The condition of mean annual temperature 7.5-19.8 ℃ annual precipitation 471-1511 mm, is suitable for Q. variabilis. Areas under the receiver operating characteristic curve (AUC values) of Domain and Boiclim models were 0.910, 0.779; the former predicted that the potential regions of high suitability for Q. variabilis are Qinling, Daba, Funiu, Tongbai, and Dabie mountains, eastern and western YunnanGuizhou Plateau, hills of southern Jiangsu and Anhui, part of the mountains in North China. Global warming might lead to the shrinking in suitable region and retreating from the south for Q. variabilis.