Arid Zone Research ›› 2019, Vol. 36 ›› Issue (2): 290-295.doi: 10.13866/j.azr.2019.02.03

• Pan-Third Pole Enviornment and Green Silk Road • Previous Articles     Next Articles

Tree-Ring-Based Reconstruction of Minimum Temperature in North Tajikistan in Recent 160 Years

YANG Mei-lin1, TA Zhi-jie1,2, WU Yan-liang1,2, ZHAO Peng1,2, YU Rui-de1   

  1. 1. Laboratory of Desert Environment,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences, Urumqi 830011,Xinjiang,China;
    2. University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2018-11-12 Revised:2018-12-27 Published:2025-10-18

Abstract: The correlation analysis between the normalized tree-ring width chronology of Juniperus turkestanica and the regional climatic elements in northern Tajikistan showed that the mean minimum temperature in February and March of the same year was significantly correlated with the radial growth of trees. According to this,the average minimum temperature in the region from February to March,1857-2016 was reconstructed. The reconstruction equation could be used to explain 39.5% variation of the minimum temperature,and the interpretation amount after adjusting the degree of freedom was 37.5%. The results showed that,in recent 160 years,the study area experienced 6 high-temperature periods including the periods of 1857-1878,1885-1890,1907-1915,1926-1931,1960-1967 and 1994-2016,and 5 low-temperature periods including the periods of 1879-1884,1891-1906,1916-1925,1932-1959 and 1968-1993. According to the results of spatial correlation analysis,the reconstructed results of the minimum temperature in February and March could be used to represent the actual situation in north Tajikistan.

Key words: tree-ring width, chronology, monthly mean minimum temperature, Juniperus turkestanica, Tajikistan