CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China.
Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, 430074, China.
Sci Data. 2023 May 19;10(1):300. doi: 10.1038/s41597-023-02224-w.
Vegetation phenology can profoundly modulate the climate-biosphere interactions and thus plays a crucial role in regulating the terrestrial carbon cycle and the climate. However, most previous phenology studies rely on traditional vegetation indices, which are inadequate to characterize the seasonal activity of photosynthesis. Here, we generated an annual vegetation photosynthetic phenology dataset with a spatial resolution of 0.05 degrees from 2001 to 2020, using the latest gross primary productivity product based on solar-induced chlorophyll fluorescence (GOSIF-GPP). We combined smoothing splines with multiple change-point detection to retrieve the phenology metrics: start of the growing season (SOS), end of the growing season (EOS), and length of growing season (LOS) for terrestrial ecosystems above 30° N latitude (Northern Biomes). Our phenology product can be used to validate and develop phenology or carbon cycle models and monitor the climate change impacts on terrestrial ecosystems.
植被物候学可以深刻地调节气候-生物圈的相互作用，因此在调节陆地碳循环和气候方面起着至关重要的作用。然而，大多数先前的物候学研究依赖于传统的植被指数，这些指数不足以描述光合作用的季节性活动。在这里，我们使用基于太阳诱导叶绿素荧光的最新总初级生产力产品（GOSIF-GPP），生成了一个从 2001 年到 2020 年的具有 0.05 度空间分辨率的年度植被光合作用物候数据集。我们结合平滑样条和多个变化点检测来检索物候学指标：30°N 以上陆地生态系统的生长季节开始（SOS）、生长季节结束（EOS）和生长季节长度（LOS）（北方生物群落）。我们的物候产品可用于验证和开发物候或碳循环模型，并监测气候变化对陆地生态系统的影响。
