chronology.csv

We have attached the information on the database used and the analyses performed to obtain the results in the manuscript. Also attached are the statistical programs and software that users can use to obtain the information.1) Tree ring width measurement was performed using the free software COFECHA and the TSAP-Win v.4.67c2) Measurements of anatomical functional traits were performed with the aid of free access software ImageJ.3) Spatial analysis of <i>Magnolia gentryi</i> and climate data were achieved with the free access software SADIE v1.22, and the SURFER v. 26.1.2164) We performed statistical analyses using the software R.DATABASE CONTENTSThe databases contain <i>Magnolia gentryi</i> chronology (chronology.csv), dasometric traits (Dasometric_assessments.txt), wood anatomical traits (Wood anatomical_assessments.txt), leaf vein traits (Leaf vein_assessments.text), climate data (Climatic_data.csv). A description of the included variables follows:chronology.csv: Tree ring width information and year of formation.column A in the database represents the years, and column B represents the ring width index data (mm). The rows mean the data.Dasometric_assessments.txt: Dasometric metrics of <i>Magnolia gentryi</i>.column A in the database represents Tree height (m), column B represents the DBH (cm), and column C represents Bark thickness (cm).Wood anatomical_assessments.txt: Measurements of wood anatomical traits for the Andean Magnolia species studied (<i>Magnolia gentryi</i>): We considered hydraulic diameter (DH, mm), vulnerability index (VI, 1 to &gt; 3), fiber lumen diameter (FD, mm), fiber length (FL, mm), and fiber wall thickness (FWT, mm)column A, row 2 in the database represents hydraulic diameter, the column B, row 2 represents the vulnerability index, the column C, row 2 represents fiber lumen diameter, the column D, arrow 2 represents the fiber length, and the column E represents fiber wall thicknessThe rows 2-222 are represented by the wood anatomical trait measurements.Leaf vein_assessments.text: Measurements of leaf vein traits for the <i>Magnolia gentryi</i>: We considered vein density (mm∙mm−2), vein length (cm), leaf base angle, and leaf shape (qualitative).Column A, row 1 in the database represents vein length (cm); column B, row 1 represents leaf base shape (0, 1, 2); column C, row 1 represents leaf shape (elliptic= 0, oblong= 1, elliptic-lanceolate= 2) and the column D, row 1 represents vein density (mm·mm−2).The rows 2-41 are represented by the leaf vein trait measurements.Climatic_data.cvs: We used the monthly precipitation (Prec), evapotranspiration (EvT) in mm, mean maximum, and minimum temperature (tmax and tmin) in °C, from the CHELSA database (Karger et al. 2021), and the layer resolution was c. 1 km2, with records spanning from 1980 to 2018.Column A in the database represents the PREC in mm; column B represents EvT in mm; column C represents tmax in ºC; and column D represents tmin in ºC.Additional informationCOFECHA (https://www.ltrr.arizona.edu/pub/dpl/A-INFO.HTM).-(opens in new window) Dating and measurement tree-ring quality control.TSAP-Win (https://rinntech.info/products/tsap-win/).-(opens in new window) Is used for analysis in dendrochronology, climate change, ecological patterns, growth and yield studies, and any application requiring accurate analysis of annual rings.ImageJ (https://imagej.nih.gov/ij/download.html).-(opens in new window) The software is used to measure the characters of xylem vessels manually.SADIE (https://repository.rothamsted.ac.uk/latest).-(opens in new window) They outline the software to measure and test spatial patterns in data from a single species and for spatial association species vs climate data.SURFER (www.goldensoftware.com).-(opens in new window) Surfer helps engineers and scientists interpret complex geospatial datasets and transform them into insightful and understandable publication-ready modelsR-software (https://www.r-project.org/).-(opens in new window) The program is used to complete all statistical analyses performed in the manuscript.

本文随附本研究手稿中获取结果所用数据库的相关信息，以及所开展的分析方法；同时一并附上可供用户获取相关数据的统计程序与软件工具。
1) 树木年轮宽度测量采用免费软件COFECHA与TSAP-Win v.4.67c完成。
2) 解剖功能性状的测量借助免费开源软件ImageJ完成。
3) 对<i>Magnolia gentryi</i>与气候数据的空间分析采用免费开源软件SADIE v1.22与SURFER v.26.1.216完成。
4) 本研究的统计分析采用R软件完成。

## 数据库内容
本数据库包含<i>Magnolia gentryi</i>的年轮年表（chronology.csv）、测树学性状数据（Dasometric_assessments.txt）、木材解剖性状数据（Wood anatomical_assessments.txt）、叶脉性状数据（Leaf vein_assessments.text）以及气候数据（Climatic_data.cvs）。各变量的说明如下：
1. chronology.csv：包含树木年轮宽度信息及其形成年份。数据库中A列为年份，B列为年轮宽度指数数据（单位：mm），每一行代表一组数据。
2. Dasometric_assessments.txt：包含<i>Magnolia gentryi</i>的测树学指标。数据库中A列为树高（单位：m），B列为胸径（DBH，单位：cm），C列为树皮厚度（单位：cm）。
3. Wood anatomical_assessments.txt：包含所研究的安第斯木兰物种<i>Magnolia gentryi</i>的木材解剖性状测量数据。本次研究考量的性状包括：导水直径（DH, mm）、脆弱性指数（VI，1至>3）、纤维腔直径（FD, mm）、纤维长度（FL, mm）以及纤维壁厚（FWT, mm）。数据库中第2行A列为导水直径，第2行B列为脆弱性指数，第2行C列为纤维腔直径，第2行D列为纤维长度，第2行E列为纤维壁厚；第2至222行均为木材解剖性状的测量数据。
4. Leaf vein_assessments.text：包含<i>Magnolia gentryi</i>的叶脉性状测量数据。本次研究考量的性状包括：叶脉密度（mm·mm−2）、叶脉长度（cm）、叶基角度以及叶形（定性变量）。数据库中第1行A列为叶脉长度（cm），第1行B列为叶基形状（取值0、1、2），第1行C列为叶形（椭圆形=0，长圆形=1，椭圆披针形=2），第1行D列为叶脉密度（mm·mm−2）；第2至41行均为叶脉性状的测量数据。
5. Climatic_data.cvs：本数据库采用的气候数据来自CHELSA数据库（Karger等，2021），包含月降水量（Prec）、蒸散量（EvT，单位：mm）、平均最高气温与最低气温（tmax与tmin，单位：℃），数据集图层分辨率约为1 km²，时间跨度为1980年至2018年。数据库中A列为降水量（单位：mm），B列为蒸散量（单位：mm），C列为最高气温（单位：℃），D列为最低气温（单位：℃）。

## 附加说明
COFECHA（https://www.ltrr.arizona.edu/pub/dpl/A-INFO.HTM）——（将在新窗口打开）：用于树木年轮定年与测量质量控制。
TSAP-Win（https://rinntech.info/products/tsap-win/）——（将在新窗口打开）：可用于树轮年代学、气候变化、生态格局、生长与产量研究等所有需要精准分析年轮的应用场景。
ImageJ（https://imagej.nih.gov/ij/download.html）——（将在新窗口打开）：该软件可手动测量木质部导管相关性状。
SADIE（https://repository.rothamsted.ac.uk/latest）——（将在新窗口打开）：该软件用于测量并检验单一物种种群的空间分布模式，以及物种与气候数据间的空间关联。
SURFER（www.goldensoftware.com）——（将在新窗口打开）：SURFER可帮助工程师与科研人员解析复杂的地理空间数据集，并将其转化为具有可读性、可直接用于发表的可视化模型。
R软件（https://www.r-project.org/）——（将在新窗口打开）：本程序用于完成本手稿中提及的全部统计分析工作。