黑河流域地表过程综合观测网（张掖湿地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张掖湿地站物候相机观测数据。站点位于甘肃省张掖市国家湿地公园，下垫面是芦苇湿地。观测点的经纬度是100.4464E, 38.9751N，海拔1460m。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 Zhangye Wetland Station 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 in Zhangye National Wetland Park, Gansu Province, with the underlying surface being reed wetland. The geographic coordinates of the observation point are 100.4464°E, 38.9751°N, and the elevation is 1460 m. For phenological period calculation, phenological indicators are first calculated based on the region of interest (ROI), 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 conducted on the dataset. Finally, key phenological period parameters including 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 for this station. For information on the Heihe River Basin Surface Process Comprehensive Observation Network or the station, please refer to Liu et al. (2018).

搜集汇总

背景与挑战

背景概述

该数据集为2023年黑河流域地表过程综合观测网中游张掖湿地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，站点位于张掖国家湿地公园的芦苇湿地区域。数据集核心内容为相对绿度指数（GCC），用于分析和计算植物物候期参数，如生长季起始日和结束日，数据经过严格的质量控制和预处理，适用于湿地生态系统物候研究。