杜松树轮年表记录的192 a阴山地区最低气温变化  

Changes of Minimum Temperature Recorded by Juniperus.Tree Ring Chronology during 192a in the Yinshan Mountains Area of China

作　　者：周莹 马龙[1] 刘廷玺[1] 黄星[1] 孙柏林 ZHOU Ying;MA Long;LIU Tingxi;HUANG Xing;SUN Bolin(College of Water Conservancy and Civil Engineering College,Inner Mongolia Agricultural Uninersity,Hohhot 010018,China)

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018

出　　处：《山地学报》2021年第3期316-326,共11页Mountain Research

基　　金：国家自然科学基金:(51669016,51869016);内蒙古自治区“草原英才”工程。

摘　　要：利用树木年轮重建长历史气候因子并揭示其变化规律,可充分弥补现代实测数据的不足。本研究在内蒙古阴山地区采集杜松树种样本,经过运用ARSTAN程序去除生长趋势,采用双权重平均法合成年表,建立了192 a内蒙古阴山地区杜松(Juniperus rigida S.et Z.)树木年轮标准化年表,分析了杜松生长与气候因子变化间的响应关系,重建了年平均最低气温序列。结果表明:(1)三类气温对杜松生长影响均呈显著负相关,其中最低气温尤为显著;(2)相对湿度、降水对杜松径向生长影响相对较弱;(3)192 a以来该地区平均最低气温出现了三次突变和两次停滞,经历了五个偏暖期(1825—1829年、1870—1887年、1894—1918年、1934—1945年、1981—2016年)以及四个偏冷期(1829—1870年、1887—1894年、1918—1934年、1945—1981年),存在2 a、11 a和30 a的变化周期,与ENSO、太阳黑子活动等周期较为接近。本研究丰富了树轮年表库,并为区域长期气候变化以及生态环境问题的应对提供了参考。By reconstructing long-term historical climate factors from tree rings,the temperature variation in the past can be revealed,which can make up for the lack of measured data in recent years.In this paper,Juniperus rigida S.et Z.were collected in the Yinshan mountains area of Inner Mongolia,and ARSTAN program was used to remove the growth trend,and the chronology was synthesized by Double Weight Average method.The tree-ring standardized chronology of Juniperus.in 192 a was established.The relationship between the growth of Juniperus.and climate change was analyzed,and the series of annual mean minimum temperature was reconstructed.The results showed that:(1)Three kinds of air temperature had significant negative correlation on the growth of Juniperus.,and the lowest temperature was particularly significant;(2)Relative humidity and rainfall had relatively weaker influenced on the radial growth of Juniperus.;(3)During 192 a the mean minimum temperature of this area appeared three mutations and two stagnations,had experienced five slant warm periods(1825-1829,1870-1887,1894-1918,1934-1945,1981-2016)and four partial cold periods(1829-1870,1887-1894,1918-1934,1945-1981).There were periods of change for 2 a,11 a and 30 a,which were close to ENSO and sunspot activity.This study enriches the tree-ring chronology database,and provides a reference for the response to regional long-term climate change and ecological and environmental problems.

关 键 词：树轮年表 气候变化 杜松 阴山地区 

分 类 号：P467[天文地球—大气科学及气象学]