黑河流域地表过程综合观测网（混合林站物候相机观测数据集-2023）

该数据集包含了2023年5月1日至2023年9月28日的黑河流域地表过程综合观测网下游混合林站物候相机观测数据。站点位于内蒙古额济纳旗四道桥，下垫面是胡杨与柽柳。观测点的经纬度是101.1335E, 41.9903N，海拔874 m。对于物候期的计算，首先，根据感兴趣区计算物候指标，如相对绿度指数（GCC, Green Chromatic Coordinate公式为GCC=G/(R+G+B), R、G、B为图像红、绿、蓝三通道像元值）。然后对数据进行质量控制、无效值填充和滤波平滑。最后根据生长曲线拟合确定关键物候期参数，如生长季起始日、顶峰、生长季结束日等。本数据集为该站点2023年相对绿度指数（GCC）。
黑河流域地表过程综合观测网或站点信息请参考Liu et al. (2018)。

This dataset contains phenological camera observation data from the Downstream Mixed Forest Station of the Heihe River Basin Surface Process Comprehensive Observation Network, covering the period from May 1 to September 28, 2023. The station is situated at Sidaoqiao, Ejina Banner, Inner Mongolia, with its underlying surface dominated by Populus euphratica and Tamarix ramosissima. The observation point has coordinates of 101.1335°E, 41.9903°N, and an elevation of 874 m. For phenological period calculation, phenological indicators are first computed based on regions of interest (ROIs), such as the Green Chromatic Coordinate (GCC). The formula for GCC is GCC = G/(R+G+B), where R, G, and B denote the pixel values of the red, green, and blue channels of the image, respectively. Subsequently, data quality control, invalid value imputation, and filtering smoothing are applied to the dataset. Finally, key phenological parameters including the start date, peak, and end date of the growing season are determined through growth curve fitting. This dataset specifically provides the 2023 Green Chromatic Coordinate (GCC) data for this station. For information regarding the Heihe River Basin Surface Process Comprehensive Observation Network or this station, please refer to Liu et al. (2018).

搜集汇总

背景与挑战

背景概述

该数据集包含2023年5月1日至9月28日黑河流域下游混合林站的物候相机观测数据，主要关注相对绿度指数（GCC）的计算和分析，用于研究植被物候期变化。数据采集于内蒙古额济纳旗四道桥，下垫面为胡杨与柽柳，观测点海拔874米。