Traits data from trees exposed to a 50% reduction in canopy throughfall for 14 years in Caxiuanã, Brazil, September to October 2016

To sample the traits, three branches from the same tree were gathered at three specific time periods each day in September and October 2016. Stem CO2 efflux measurements (Rstem) were made in October 2016 using a gas analyser attached in a close loop system to a 75cm2 area of each of our study trees. Growth rates were calculated for each tree using mean stem increment data measured every three months using dendrometers, as presented in Rowland et al., (https://doi.org/10.1038/nature15539). Mean growth increment was calculated by averaging three-monthly growth rate data from 2010-2016 for each tree and then log-transforming these data.为采集性状样本，研究人员于2016年9月和10月的每日三个特定时段，从每棵研究树木上采集三根枝条。2016年10月，采用搭载闭环系统的气体分析仪，对每棵研究树木的75平方厘米区域开展树干二氧化碳排放通量（Rstem）测定。树木生长速率通过每三个月使用树干测径仪测得的树干增量数据计算得到，相关方法详见Rowland等人的研究（https://doi.org/10.1038/nature15539）。每棵树的平均生长增量为2010-2016年间每三个月一次的生长速率数据的平均值，随后对该数据进行对数转换。