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Reconstruction Dataset of Yearly July-August Mean Temperature from Tree-ring Maximum Latewood Density of Pinus sylvestris var. mongolica at North Greater Khingan Mountains (1781-2013)


LI Mingqi1LAN Yu2
1 Key Laboratory of Land Pattern and Simulation,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China2 Guangdong Meteorological Observatory,Guangzhou 510640,China

DOI:10.3974/geodb.2022.04.02.V1

Published:Apr. 2022

Visitors:2231       Data Files Downloaded:25      
Data Downloaded:0.59 MB      Citations:

Key Words:

tree-ring,maximum latewood density,North Greater Khingan Mountains,Pinus sylvestris var. mongolica,temperature reconstruction,1781-2013

Abstract:

61 tree-ring cores (10 mm) from 28 Hailar pines (Pinus sylvestris var. mongolica) were collected at the upper tree lines (51.79°N, 123.08°E, 950 m a.s.l) from the Huzhong National Natural Preserve in North Greater Khingan Mountains in september 2013. The cores were visually cross-dated after they were dried and sanded. 39 tree-ring cores from 22 trees were selected for densitometry analysis. The maximum latewood density (MXD) was obtained by DENDRO 2003 tree-ring densitometry. Each MXD series was fit using 80-year cubic smoothing spline to remove the non-climatic trends. Each detrended index series was calculated as the ratio of the tree-ring value to the corresponding spline curve value of a given year. All index series of tree-ring data from the site were combined into the site chronology using a bi-weight robust mean. Based on the relationship between MXD chronology and climate variables from Mohe meteorological station, July-August mean temperature was reconstructed back to AD 1781 for the North Greater Khingan Mountains. The reconstruction explained 31.1% of the variance in the instrumental period (AD 1959-2013). The dataset includes: (1) geolocation of the sampling site; (2) tree-ring MXD standard chronology; (3) the reconstructed July-August temperature from 1781 to 2013 in North Greater Khingan Mountains, and 11-year smoothing average data; (4) statistics of 39 raw tree-ring MXD measurements. The dataset is archived in .shp and .xlsx data formats, and consists of 9 data files with data size of 27.2 KB (Compressed to one single file with 24 KB).

Foundation Item:

Ministry of Science and Technology of P. R. China (2017YFA0603302);

Data Citation:

LI Mingqi, LAN Yu. Reconstruction Dataset of Yearly July-August Mean Temperature from Tree-ring Maximum Latewood Density of Pinus sylvestris var. mongolica at North Greater Khingan Mountains (1781-2013)[J/DB/OL]. Digital Journal of Global Change Data Repository, 2022. https://doi.org/10.3974/geodb.2022.04.02.V1.

References:

[1] Fritts, H. Tree Rings and Climate [M]. London: Academic Press, 1976.
     [2] Sun, Y., Wang, L. L., Chen, J., et al. Reconstructing mean maximum temperatures of May–August from tree-ring maximum density in North Da Hinggan Mountains, China [J]. Chinese Science Bulletin, 2012, 57(16): 2007-2014.

Data Product:

ID Data Name Data Size Operation
1 NGKM_MXD_Tem0708_1781-2013.rar 24.08KB
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