标题: Tree Ring Blue Intensity-Based August Temperature Reconstruction for Subtropical Central China

作者: Zheng, YH (Zheng, Yonghong); Wilson, R (Wilson, Rob)

来源出版物: FORESTS  卷: 15  期: 8  文献号: 1428  DOI: 10.3390/f15081428  Published Date: 2024 AUG  

摘要: Tree-ring blue intensity (BI) has the potential to provide information on past summer temperatures of a similar quality to that of tree-ring maximum latewood density and at a substantially reduced cost. To explore the applicability of BI in subtropical regions, the inverted BI for the earlywood, latewood, and the delta BI (DBI) parameters, together with tree-ring width of subalpine fir (Abies fargesii Franch.) in the Shennongjia area of China, were measured, and the corresponding chronologies were developed. The relationships between these chronologies and monthly precipitation, monthly mean minimum temperature, monthly mean temperature, and monthly mean maximum temperature were explored through correlation analysis. Results show that the DBI chronology is closely related to the temperature in August of the current year, indicating that BI, specifically delta BI, data are suitable for use in dendroclimatology studies in subtropical areas. The resultant mean temperature reconstruction for August, based on DBI, explains 40.8% of the temperature variance and is robustly validated using independent periods from the calibration. This pilot study not only highlights the potential of DBI for temperature reconstruction in China but also offers valuable insights into historical climate variations in the Shennongjia region. Moreover, it shows the potential for utilizing such tree-ring data from low-latitude regions to derive past climate data in subtropical warm-humid zones.

作者关键词: tree-ring blue intensity; Shennongjia; Abies fargesii Franch.; temperature reconstruction

地址: [Zheng, Yonghong] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.

[Wilson, Rob] Univ St Andrews, Sch Earth & Environm Sci, St Andrews KY16 9TS, Scotland.

通讯作者地址: Zheng, YH (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.

电子邮件地址: zhengyh@whu.edu.cn; rjsw@st-andrews.ac.uk

影响因子：2.4