Summary of measured and modeled light curve parameters for diffuse, direct, and intermediate light curves for 14 whole-canopy 1mx1m plots sampled near the shrub LTER sites at Toolik Field Station, Alaska, summer 2012.

14 1m x 1m shrub plots were sampled the summer of 2012 under direct and diffuse light conditions. Light response curves were measured under each light condition for each plot using a Li-Cor 6400 to measure net ecosystem exchange (NEP); these measurements were modelled using a saturatingMichaelis-Menton formula. The best fit parameters for those models are contained here (Pmax, K, RE, Eo, and light compensation point) for each individual NEP light response curve (direct, diffuse, and intermediate light conditions) measured with corresponding NDVI , LAI, diffuse light fraction, and average temperature. Sorting variables and curve ID numbers for each curve match the corresponding data in the flux data file.

2012年夏季，研究团队对14块1 m × 1 m的灌丛样地开展了采样工作，采样过程涵盖直射光与散射光两种光照环境。针对每块样地的每种光照条件，采用Li-Cor 6400光合仪测定其光照响应曲线，以此获取净生态系统交换量（net ecosystem exchange, NEP）；随后采用饱和米氏（Michaelis-Menten）动力学公式对上述测量结果进行建模分析。本数据集包含每条独立NEP光照响应曲线（对应直射光、散射光及中间光照条件）的最优模型拟合参数，具体包括Pmax、K、RE、Eo与光补偿点；各曲线同步配套测定了归一化差异植被指数（Normalized Difference Vegetation Index, NDVI）、叶面积指数（Leaf Area Index, LAI）、散射光占比及平均气温数据。每条曲线的分类变量与曲线ID编号，均与通量数据文件中的对应数据保持匹配。