Pine Maximum Latewood Density in Semi‐Arid Northern China Records Hydroclimate Rather Than Temperature

Yang, BaoSciences School of Geography and Ocean Science Nanjing University Nanjing China;Key Laboratory of Desert and Desertification Northwest Institute of Eco‐Environment and Resources Chinese Academy of Sciences Lanzhou China (författare)

Long records of tree-ring maximum latewood density (MXD) measurements in conifers have been successfully employed to reconstruct summer temperature changes globally. Yet, the potential of MXD as a proxy in semi-arid, low-latitude regions for reconstructing either temperature or hydroclimate variability remains largely unexplored. Here, we developed a MXD data set of Chinese pine from semi-arid northern China, and investigated its sensitivity to different climate variables. We found that the annual self-calibrated Palmer Drought Severity Index from previous August to current July displays the strongest influence on the MXD variation. The entire MXD chronology (covering 1736–2020) is highly consistent with nearby tree-ring-based annual precipitation and drought reconstructions at decadal timescales, confirming a temporally stable hydroclimate signal in our MXD record. In particular, the rapid wetting trend during the 2010–2020 period is well captured by the MXD data. This novel study has wide implications for future use of tree-ring density data to reconstruct past climate changes globally.

He, MinhuiKey Laboratory of Desert and Desertification Northwest Institute of Eco‐Environment and Resources Chinese Academy of Sciences Lanzhou China (författare)
Yang, LiuKey Laboratory of Desert and Desertification Northwest Institute of Eco‐Environment and Resources Chinese Academy of Sciences Lanzhou China (författare)
Wang, FengCentre Eau Terre Environnement Institut National de la Recherche Scientifique Québec City QC Canada;GEOTOP Research Centre in the Dynamics of the Earth System Montréal QC Canada (författare)
Ljungqvist, Fredrik C.Uppsala universitet,Kollegiet för avancerade studier (SCAS),Department of History Stockholm University Stockholm Sweden;Bolin Centre for Climate Research Stockholm University Stockholm Sweden;Swedish Collegium for Advanced Study Linneanum Uppsala Sweden (författare)
Sciences School of Geography and Ocean Science Nanjing University Nanjing China;Key Laboratory of Desert and Desertification Northwest Institute of Eco‐Environment and Resources Chinese Academy of Sciences Lanzhou ChinaKey Laboratory of Desert and Desertification Northwest Institute of Eco‐Environment and Resources Chinese Academy of Sciences Lanzhou China (creator_code:org_t)

Ingår i:Geophysical Research Letters: American Geophysical Union (AGU)50:130094-82761944-8007

Av författaren/redakt...: Yang, Bao; He, Minhui; Yang, Liu; Wang, Feng; Ljungqvist, Fred ...

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