Division of desertification climate types and determination of potential range of desertification in China

作     者：CI Longjun WU BoChinese Academy of Forestry, Beijing 100091 CHINA  

出 版 物：《Journal of Geographical Sciences》 (地理学报（英文版）)

年 卷 期：1998年第8卷第2期

页      面：86-91页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0705[理学-地理学] 0706[理学-大气科学] 070501[理学-自然地理学] 

主　　题：desertification the Convention to Combat Desertification Thornthwaite's method potential evapotranspiration 

摘      要：Distribution of desertification climate types in China was analyzed using Thornthwaite s method on calculating potential evapotranspiration (PE), according to the definition provided by the United Nations Convention, by employing meteorological records from 1864 stations in China. The annual PE and the humidity indices were calculated for every station, based on which a distribution map of HI was constructed. The potential range of desertification in China was obtained for the first time, about 3.32 million km2 and makes up about 34.6 percent of the country. The distribution map of HI was compared with the vegetation map of China and the precipitation map of China respectively. In eastern and northern China, the distribution of climate types is basically acceptable, but for QinghaiTibetan Plateau, where Thornthwaite s method on calculating PE is not quite suitable, the isopleths are deviated to the northern side and the potential range of desertification is smaller than expected.