Integrative Biology Journals

JOURNAL OF FORESTRY RESEARCH ›› 2024, Vol. 35 ›› Issue (1): 63-.DOI: 10.1007/s11676-024-01715-9

• Original Paper • Previous Articles     Next Articles

Climate warming is significantly influenced by rising summer maximum temperatures: insights from tree-ring evidence of the Western Tianshan Mountains, China

Meng Ren1,2,3, Yu Liu1,4,5,6,b, Qiufang Cai1,6, Qiang Li5, Huiming Song5, Changfeng Sun5   

  1. 1 The State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, 710061, Xi’an, People’s Republic of China
    2 Xi’an Institute for Innovative Earth Environment Research, 710061, Xi’an, People’s Republic of China
    3 Institute of Desert Meteorology, China Meteorological Administration, 830002, Ürümqi, People’s Republic of China
    4 Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, 710061, Xi’an, People’s Republic of China
    5 School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, 710049, Xi’an, People’s Republic of China
    6 Qingdao National Laboratory for Marine Science and Technology, 266237, Qingdao, People’s Republic of China
  • Received:2023-11-14 Accepted:2024-01-10 Online:2024-10-16 Published:2024-10-16
  • Contact: Yu Liu

Abstract:

As one of the regions most affected by global climate warming, the Tianshan mountains has experienced several ecological crises, including retreating glaciers and water deficits. Climate warming in these mountains is considered mainly to be caused by increases in minimum temperatures and winter temperatures, while the influence of maximum temperatures is unclear. In this study, a 300-year tree-ring chronology developed from the Western Tianshan Mountains was used to reconstruct the summer (June–August) maximum temperature (T max6–8) variations from 1718 to 2017. The reconstruction explained 53.1% of the variance in the observed T max6–8. Over the past 300 years, the T max6–8 reconstruction showed clear interannual and decadal variabilities. There was a significant warming trend (0.18 °C/decade) after the 1950s, which was close to the increasing rates of the minimum and mean temperatures. The increase in maximum temperature was also present over the whole Tianshan mountains and its impact on climate warming has increased. The T max6-8 variations in the Western Tianshan mountains were influenced by frequent volcanic eruptions combined with the influence of solar activity and the summer North Atlantic Oscillation. This study reveals that climate warming is significantly influenced by the increase in maximum temperatures and clarifies possible driving mechanisms of temperature variations in the Western Tianshan mountains which should aid climate predictions.

Key words: Tree rings, Western Tianshan mountains, Temperature change, Climate warming