过去百年吕梁山南端油松生长特征及其与气候变化的关系_谢梅.pdf

收稿日期：2022-01-25；录用日期：2022-04-27；网络出版：2022-05-10Received Date:2022-01-25;Accepted Date:2022-04-27;Online first:2022-05-10基金项目：中国科学院战略性先导科技专项（B 类）（XDB40010300）；崂山实验室科技创新项目（LSKJ202203300）；黄土与第四纪地质国家重点实验室开放基金（SKLLQG2139）Foundation Item:Strategic Priority Research Program of Chinese Academy of Sciences(XDB40010300);Science and TechnologyInnovation Project of Laoshan Laboratory(LSKJ202203300);Open Fund of State Key Laboratory of Loess and Quaternary Geology(SKLLQG2139)通信作者：蔡秋芳，E-mail：Corresponding Author:CAI Qiufang,E-mail:研究论文ARTICLEVol.14 No.1 Feb.2023 DOI:10.7515/JEE222039地 球 环 境 学 报Journal of Earth EnvironmentJEE引用格式：Citation:谢 梅,蔡秋芳,刘 禹,等.2023.过去百年吕梁山南端油松生长特征及其与气候变化的关系 J.地球环境学报,14(1):62 73.Xie M,Cai Q F,Liu Y,et al.2023.Growth characteristics of Pinus tabuliformis Carr.and its relationship with climate change in the south of Lliang Mountains in the past century J.Journal of Earth Environment,14(1):62 73.过去百年吕梁山南端油松生长特征及其与气候变化的关系谢 梅1,5，蔡秋芳1,2,3,4*，刘 禹1,2,3,4，张涵玉1,5，李 腾1,5，叶远达1,51.中国科学院地球环境研究所 黄土与第四纪地质国家重点实验室，西安 7100612.中国科学院第四纪科学与全球变化卓越创新中心，西安 7100613.崂山实验室，青岛 2662374.陕西关中平原区域生态环境变化与综合治理国家野外科学观测研究站，西安 7100615.中国科学院大学，北京 100049Growth characteristics of Pinus tabuliformis Carr.and its relationship with climate change in the south of Lliang Mountains in the past centuryXIE Mei1,5,CAI Qiufang1,2,3,4*,LIU Yu1,2,3,4,ZHANG Hanyu1,5,LI Teng1,5,YE Yuanda1,51.State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xian 710061,China2.CAS Center for Excellence in Quaternary Science and Global Change,Xian 710061,China3.Laoshan Laboratory,Qingdao 266237,China4.National Observation and Research Station of Regional Ecological Environment Change and Comprehensive Management in the Guanzhong Plain,Shaanxi,Xian 710061,China5.University of Chinese Academy of Sciences,Beijing 100049,China 摘 要：理解树木生长对气候变化和人类活动干扰的响应有助于未来森林管理和双碳政策的落实。本文基于采自吕梁山南端的油松（Pinus tabuliformis Carr.）树轮样本建立了标准树轮宽度年表。通过 Pearson相关分析发现树轮年表对研究区 3 7 月土壤湿度（r=0.60，P0.01，n=37）、5 6 月平均最低温度（r=0.37，P0.01，n=63）和 5 月降水量（r=0.31，P0.05，n=64）响应敏感，说明水分条件（降水和土壤湿度）是影响研究区油松径向生长的主要限制因子，温度则是通过调控土壤湿度进而影响树木径向生长过程。近百年来（1926 2011 年），研究区油松发生了三次生长释放事件（1932 年，1977 1980年，2001 2011 年）和一次生长抑制事件（1991 1994 年）。生长释放事件在次数、持续时间和发生强度上都高于生长抑制事件。适宜（不适宜）的水热组合能够促进生长释放（抑制），人类活动干扰也能够诱发生长事件。空间相关分析揭示树轮年表与研究区及周边较大范围的气候环境变化密切相关。本研究对深入了解该地区油松树种生长特征及其对气候与人类活动干扰的响应具有重要意义。关键词：生长事件；油松；树轮宽度；生长-气候关系第 1 期谢 梅，等：过去百年吕梁山南端油松生长特征及其与气候变化的关系63DOI:10.7515/JEE222039Abstract:Background,aim,and scope Disturbance plays an important role in the ecosystems.To fully understand the law of climate/environment evolution and the mechanism by which human activity affects tree growth,it is necessary to explore the relationship between tree growth and climatic/environment factors,and the growth history of trees.In this study,climatic/environment signals in the tree-ring width chronology of Pinus tabuliformis Carr.in the southern Lliang Mountains were explored,and the characteristics of tree growth were investigated.Materials and methods The tree-ring width STD chronology of P.tabuliformis in the south of the LliangMountains(363712N,1111200E,15301560 m)was developed based on 53 well cross-dated tree-ring cores.Pearson correlation analysis was adopted to analyze the relationship between tree-ring width and monthly/seasonal mean temperature,mean minimum temperature,total precipitation and 0 40 cm soil moisture.Percentage of growth change(GC)of P.tabuliformis was calculated to identify the growth release/inhibition events.When the GC is greater than or equal to 25%,the growth release event occurs,when the GC is less than or equal to 25%,the growth of P.tabuliformis is inhibited.Spatial correlation analysis(http:/climexp.knmi.nl/)was performed to explore the relationship between tree growth and large-spatial area climatic/environment factors.Results The correlation analysis revealed that tree growth showed a significantly negative relationship with May June mean minimum temperature(r=0.37,P0.01,n=63),whereas significantly positive relationships with May precipitation amount(r=0.31,P0.05,n=64)and the March July mean soil moisture(r=0.60,P0.01,n=37).In the past century,tree growth release events occurred during three times(1932,1977 1980 and 2001 2011),while growth inhibition occurred only once(1991 1994).Discussion The negative correlation between May June mean minimum temperature and tree-ring width might be that high temperature resulted in water stress and then limited tree growth.Tree growth is positively correlated with May precipitation since water shortage in the early growing season would lead to narrow rings of P.tabuliformis.The soil moisture is determined by various climatic factors such as precipitation and temperature.The strong positive correlation between soil moisture and tree growth indicates that precipitation and temperature work together to control tree growth.Both the growth release and inhibition events can be attributed to the impacts of climate change.Growth releas