Temperature reconstruction (1750–2008) from Dahurian larch tree-rings in an area subject to ­permafrost in Inner Mongolia, Northeast China

Climate Research

Zhenju Chen¹  Xianliang Zhang¹  Nicole Davi¹  Mingxing Cui¹  Wei Chen¹  Jinbao Li¹  Xingyuan He¹  Na Li¹ 

关键词: Tree-ring width;    Temperature reconstruction;    Dahurian larch;    Permafrost change;    Climatic variation;   

DOI  :  10.3354/cr00999

来源: Inter-Research Science Publishing

【 摘 要 】

ABSTRACT:  May–September temperatures were reconstructed for the past 250 yr based on Dahurian larch Larix gmelinii Rupr. growing in permafrost region of Northeast China. The reconstruction accounts for 39.3% of the actual temperature variance over the period 1958–2008. The reconstruction captured 3 relatively cold periods in 1847–1852, 1861–1866 and 1935–1941; 2 relatively warm periods in 1874–1879 and 2001–2008; and a persistent warming trend since the mid-20th century. The long-term changes in temperature documented here correspond well with regional temperature change from observational records, other global and regional proxy-based temperature reconstructions, and documented changes in regional permafrost. Thus, valuable information might be preserved in our reconstruction about local- to regional-scale climatic variation during the past 2.5 centuries.

【 授权许可】

Unknown