黑河流域地表过程综合观测网（大满超级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中游大满超级站的物候相机观测数据。站点位于甘肃省张掖市大满灌区内，下垫面是玉米。观测点的经纬度是100.37223E, 38.85551N，海拔1556.06m。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 Daman Super Station in the middle reaches of the Heihe River Basin Surface Process Comprehensive Observation Network, covering the period from May 1, 2023 to September 28, 2023. The station is located within the Daman Irrigation District, Zhangye City, Gansu Province, with maize as the underlying surface. The coordinates of the observation site are 100.37223°E, 38.85551°N, and the elevation is 1556.06 m. For the calculation of phenological periods, phenological indicators are first calculated 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 represent 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 performed on the dataset. Finally, key phenological period parameters, such as the start date of the growing season, peak date, and end date of the growing season, are determined via growth curve fitting. This dataset specifically provides the 2023 Green Chromatic Coordinate (GCC) data from this station. For information on 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

该数据集是2023年黑河流域地表过程综合观测网中游大满超级站的物候相机观测数据，时间覆盖2023年5月1日至9月28日，站点位于甘肃省张掖市玉米农田，提供相对绿度指数（GCC）以分析植物物候期，如生长季起始日和结束日。数据通过质量控制和处理，适用于地表过程与农田生态研究，共享方式为申请获取。