基于樟子松树轮晚材最大密度重建的大兴安岭北部7-8月平均气温数据集(1781‒2013)  

A July–August Mean-Temperature Dataset Reconstructed based on the Maximum Latewood Density of Hailar Pine in the North Greater Khingan Mountains(1781–2013)

作　　者：李明启[1] 兰宇 Li,M.Q.;Lan,Y.(Key Laboratory of Land Pattern and Simulation,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China;Guangdong Meteorological Observatory,Guangdong,Guangzhou 510640,China)

机构地区：[1]中国科学院地理科学与资源研究所,中国科学院陆地表层格局与模拟院重点实验室,北京100101 [2]广东省气象台,广州510640

出　　处：《全球变化数据学报（中英文）》2022年第3期395-401,V0395-V0401,共14页Journal of Global Change Data & Discovery

基　　金：中华人民共和国科学技术部(2017YFA0603302)。

摘　　要：本文利用2013年9月份采自大兴安岭北部呼中国家自然保护区高海拔树线位置(51.79°N,123.08°E,海拔900 m)的樟子松(Pinus sylvestris var.mongolica Litv)树轮样芯(直径10 mm),使用瑞士生产的DENDRO 2003树轮分析系统获取了树轮密度数据,建立了树轮晚材最大密度(maximum latewood density,MXD)年表,并与漠河气象站气象数据进行了相关分析。结果表明MXD年表与该区7-8月平均气温相关最高。因此,利用MXD年表重建了1781-2013年大兴安岭北部地区7-8月的平均气温,重建方程的方差解释量为31.1%。数据集包括:(1)采样点的地理位置数据;(2)树轮MXD标准年表;(3)重建的1781-2013年7-8月的平均气温,及11年滑动平均值;(4)39根样芯的树轮晚材最大密度测量值统计特征。数据存储为.shp和.xlsx格式,由9个数据文件组成,数据量为27.2 KB(压缩为1个文件24 KB)。Tree-ring cores(10 mm)of Hailar pine(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 Nature Reserve in the north Greater Khingan Mountains in September 2013.The maximum latewood density(MXD)was obtained using a DENDRO 2003 densimeter and an MXD chronology was developed.A correlation analysis was carried out between the MXD chronology and climate variables from the Mohe meteorological station,and the strongest correlation was found with the July–August mean temperature.Therefore,the July–August mean temperature was reconstructed back to 1781 A.D.for the north Greater Khingan Mountains.The reconstruction explained 31.1%of the variance in the instrumental period(1959–2013 A.D.).The dataset includes:(1)the geolocation of the sampling site;(2)tree-ring MXD standard chronology;(3)reconstructed July–August temperature series from 1781 to 2013 in the 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 it consists of nine data files with a total size of 27.2 KB(this is compressed to one single file with a size of 24 KB).

关 键 词：树轮 晚材最大密度 大兴安岭北部 气温重建 

分 类 号：S791.253[农业科学—林木遗传育种]