SPRUCE Vegetation Phenology in Experimental Plots from Phenocam Imagery, 2015-2018

This dataset consists of PhenoCam data from the SPRUCE experiment from the beginning of whole ecosystem warming in August 2015 through March-31 of 2019, with start- and end-of-season phenological transition dates derived through the end of autumn 2018. Digital cameras, or phenocams, installed in each SPRUCE enclosure track seasonal variation in vegetation “greenness”, a proxy for vegetation phenology and associated physiological activity. Three separate regions of interest (ROIs) were defined for each camera field of view, corresponding to different vegetation types and demarcating: Picea trees (vegetation type EN, for evergreen needleleaf); Larix trees (vegetation type DN, for deciduous needleleaf); and the mixed shrub layer (vegetation type SH).

该数据集包含SPRUCE实验的PhenoCam数据，时间跨度为2015年8月整个生态系统变暖启动至2019年3月31日，其中季节起止的物候转换日期推导至2018年秋末。安装于各SPRUCE围场内的数码相机（phenocams，物候相机）可追踪植被“绿度”的季节动态，绿度是植被物候及相关生理活动的替代指标。每个相机视场定义了三个独立的感兴趣区域（ROIs），对应不同植被类型并划分为：云杉树（植被类型EN，代表常绿针叶）、落叶松树（植被类型DN，代表落叶针叶）以及混合灌木层（植被类型SH）。