Arctic terrestrial ecosystems near the treeline in river lowlands are vulnerable to the changing climate and seasonal extreme events, including flooding. We set up a simple camera monitoring system to record the timings and durations of the leafy period and the spring flush of river water at three observation sites (Boydom [B]: 70.64°N, 148.15°E; Kodac [K]:70.56°N, 148.26°E; Verkhny‐Khatistakh [VK]:70.25°N,147.47°E) in the Indigirka lowland, in Northeastern Siberia. Time‐lapse digital cameras were located at seven points across the three sites. The time intervals were 1–4 or 24 hours. The minimum and maximum monitoring periods were 2 years (July 2016 to August 2018) at B and 5 years (August 2013 to July 2018) at K. One camera documented the timings of river ice melt and open water periods from the riverbank of the Kryvaya River, one of the small tributaries of the Indigirka River. The other six cameras recorded several types of ground cover typical of the area, including larch trees (Larix cajanderi), shrubs (including Salix spp. and Betula nana), forbs, mosses and graminoids in an ecosystem of sparsely forested shrublands, wetlands and riversides. The data consists of 45,617 JPEG‐format images. This dataset can be used to detect the onset and offset of the growing season and to capture the ice melt timing and water cover periods in wetlands and riversides. It may be useful in validating satellite data such as the vegetation remote sensing index for remote and little‐known areas. These data may contribute to the study of the role of high‐latitude ecosystems in global climate changes.

中文翻译：

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西伯利亚东北部taiga–tundra边界的河流低地生态系统中植物物候和春季河流冲刷时间的摄影记录

河流低地林木附近的北极陆地生态系统易受气候变化和季节性极端事件（包括洪水）的影响。我们建立了一个简单的摄像头监控系统，以记录三个观测点的多叶期和河水春季冲刷的时间和持续时间（Boydom [B]：N。70.64°N，148.15°E； Kodac [K]：70.56°西北部，北148.26°E；北印度洋的Indigirka低地，Verkhny-Khatistakh [VK]：70.25°N，147.47°E。延时数码相机位于三个站点的七个位置。时间间隔为1-4或24小时。B的最小和最大监视时间为2年（2016年7月至2018年8月），K的最小和最大监视时间为5年（2013年8月至2018年7月）。一台摄像机记录了Kryvaya河岸河冰融化和开放水域的时间河，英迪吉尔卡河的小支流之一。其他六台摄像机记录了该地区典型的几种地面覆盖物，包括落叶松树（在稀疏的灌木丛，湿地和河边的生态系统中，落叶松，灌木（包括柳柳和桦树），草，苔藓和类动物类动物。数据包含45,617张JPEG格式的图像。该数据集可用于检测生长季节的开始和偏移，并捕获湿地和河沿的冰融化时间和水覆盖期。在验证卫星数据（例如偏远和鲜为人知的地区的植被遥感指数）方面可能很有用。这些数据可能有助于研究高纬度生态系统在全球气候变化中的作用。