A Global Data Set of Leaf Photosynthetic Rates, Leaf N and P, and Specific Leaf Area

This global data set of photosynthetic rates and leaf nutrient traits was compiled from a comprehensive literature review. It includes estimates of Vcmax (maximum rate of carboxylation), Jmax (maximum rate of electron transport), leaf nitrogen content (N), leaf phosphorus content (P), and specific leaf area (SLA) data from both experimental and ambient field conditions, for a total of 325 species and treatment combinations. Both the original published Vcmax and Jmax values as well as estimates at standard temperature are reported.

The maximum rate of carboxylation (Vcmax) and the maximum rate of electron transport (Jmax) are primary determinants of photosynthetic rates in plants, and modeled carbon fluxes are highly sensitive to these parameters. Previous studies have shown that Vcmax and Jmax correlate with leaf nitrogen across species and regions, and locally across species with leaf phosphorus and specific leaf area, yet no universal relationship suitable for global-scale models is currently available.

These data are suitable for exploring the general relationships of Vcmax and Jmax with each other and with leaf N, P and SLA. This data set contains one *.csv file.

本光合速率与叶片养分性状全球数据集基于全面的文献综述整合而成。该数据集包含来自受控实验与自然野外两种条件下的最大羧化速率（Vcmax，maximum rate of carboxylation）、电子传递最大速率（Jmax，maximum rate of electron transport）、叶片氮含量（N）、叶片磷含量（P）以及比叶面积（SLA）的估算数据，总计涵盖325个物种与处理组合。同时提供已发表的原始最大羧化速率、电子传递最大速率数值，以及标准温度下的估算值。

最大羧化速率与电子传递最大速率是决定植物光合速率的核心参数，模拟碳通量对这些参数的变化极为敏感。既往研究表明，不同物种与区域间的最大羧化速率、电子传递最大速率与叶片氮含量存在相关性，且在物种尺度内与叶片磷含量、比叶面积相关，但目前尚无适用于全球尺度模型的通用关联关系。

本数据集可用于探究最大羧化速率与电子传递最大速率之间，以及二者与叶片氮、磷含量和比叶面积之间的通用关联关系。本数据集仅包含一个*.csv格式文件。