Nitrogen and phosphorus concentrations (and their ratio) of green leaves, senesced leaves and wood from E. tereticornis grown in a mature Eucalyptus woodland (EucFACE) in Western Sydney

Mass- and area-based concentrations of green leaves from each of the six plots at EucFACE across 6 years (2012-2018, including different campaigns per year). Ambient plots are represented by rings 2, 3 and 6 while elevated plots are rings 1, 4 and 5.
Similar set up and description for senesced leaves and wood, although the values here are just mass-based expressed in percentage (indicated by Perc.N or Perc.P for each nutrient - need to multiply by 10 to get mg g-1).

Following descriptors are being used:
Campaign: time of measurement
Date: data of measurement
Year
Ring: treatment plot (see above)
CO2.treat: CO2 treatment (see above)
Tree: tree number
Age : leaf age class
LeafAge : leaf age on a continuous basis as days since leaf flushing
Variables:
LMA: leaf mass per area ratio in g m-2
N and P: are nitrogen (N) and phosphorus (P) concentrations respectively with m and a indicating mass- and area bases (for example Na or Nm). The ratios of N to P are expressed at NP and similar.

EucFACE平台6个样地2012-2018年共6年的绿叶（green leaves）质量基浓度与面积基浓度数据（每年包含多轮测量批次）。其中环2、3、6为CO₂背景浓度对照样地，环1、4、5为CO₂升高处理样地。
枯落叶（senesced leaves）与木质组织（wood）的数据集实验设置与描述与此类似，不过此处数值仅为以百分比形式呈现的质量基浓度（各养分对应Perc.N或Perc.P——需将数值乘以10，即可转换为mg·g⁻¹单位）。
数据集采用以下描述项：
Campaign：测量批次
Date：测量日期
Year：年份
Ring：处理样地编号（详见上文）
CO2.treat：CO₂处理方式（详见上文）
Tree：树木编号
Age：叶龄分级
LeafAge：以叶片展叶后天数计的连续叶龄
变量说明：
LMA：叶面积比质量，单位为g·m⁻²
N与P：分别为氮（N）、磷（P）浓度，后缀m和a分别代表质量基与面积基浓度（例如Na或Nm）。氮磷比值以NP等形式表示。