该产品提供了北半球陆地生态系统每年（2001-2020 年）0.05 度的植被光合物候（即季初-SOS；季末-EOS；季长-LOS）。文件包括两种类型：单生长季和双生长季生态系统的第一个生长季；双生长季生态系统的第二个生长季。
", "ds_source": "使用 2001-2020 年的 GOSIF-GPP 数据集来推导本研究的大尺度物候指标。为了评估基于 GOSIF-GPP 的物候估计，我们使用了来自北部生物群落 EC 通量塔的每日 GPP 数据，该数据基于 FLUXNET2015 数据集的变星阈值 (VUT) 平均值。
", "ds_process_way": "我们利用基于太阳诱导叶绿素荧光的最新初级生产力总值（GOSIF-GPP），生成了 2001 年至 2020 年空间分辨率为 0.05 度的年度植被光合物候数据集。我们将平滑样条与多变化点检测相结合，以检索北纬 30 度以上陆地生态系统（北方生物群落）的物候指标：生长季开始（SOS）、生长季结束（EOS）和生长季长度（LOS）。我们的物候学产品可用于验证和开发物候学或碳循环模型，以及监测气候变化对陆地生态系统的影响。
", "ds_quality": "数据质量良好。
", "ds_acq_start_time": "2001-01-31 00:00:00", "ds_acq_end_time": "2020-12-31 00:00:00", "ds_acq_place": "北纬 30° 以上区域", "ds_acq_lon_east": 180.0, "ds_acq_lat_south": 30.0, "ds_acq_lon_west": 180.0, "ds_acq_lat_north": 90.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 2053939550, "ds_files_count": 7, "ds_format": "nc", "ds_space_res": null, "ds_time_res": "年", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "a791c794-986d-4b1d-87b5-c9a1e919b57b.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。", "ds_from_station": null, "organization_id": "a4dd5849-78f2-44c5-b0f1-3450e952b2a2", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.45" ], "quality_level": 3, "publish_time": "2024-10-29 09:39:37", "last_updated": "2025-05-29 11:33:10", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.FIGSHARE.DB6619.2024", "i18n": { "en": { "title": "Vegetation photosynthetic phenology metrics in northern terrestrial ecosystems: a dataset derived from a gross primary productivity product based on solar-induced chlorophyll fluorescence (2001-2020) ", "ds_format": "nc", "ds_source": "Use the GOSIF-GPP dataset from 2001 to 2020 to derive the large-scale phenological indicators for this study. To evaluate the phenological estimation based on GOSIF-GPP, we used daily GPP data from the EC flux tower of the northern biome, which was based on the average variable star threshold (VUT) of the FLUXNET2015 dataset.
", "ds_quality": "The data quality is good.
", "ds_ref_way": "", "ds_abstract": "This product provides annual (2001-2020) 0.05 degree vegetation photosynthetic phenology (i.e., start of season-SOS; end of season-EOS; length of season-LOS) in terrestrial ecosystems of the Northern Hemisphere. The files includes two types: first growing season in ecosystems of the single and the double growing season; second growing season in ecosystems of the double growing season.
", "ds_time_res": "年", "ds_acq_place": "Areas above 30 ° N latitude", "ds_space_res": "", "ds_projection": "", "ds_process_way": "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.
", "ds_ref_instruction": "When using data, users should clearly declare the source of the data in the main text and cite the citation method provided by this metadata in the reference section." } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_outside", "cstr_reg_from": "reg_outside", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "陆地生态系统", "植被光合物候指标", "SOS", "EOS", "LOS" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "北纬 30° 以上" ], "ds_time_tags": [ 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 ], "ds_contributors": [ { "true_name": "方竟", "email": "jingfang@mail.bnu.edu.cn", "work_for": "中国科学院武汉植物园", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "方竟", "email": "jingfang@mail.bnu.edu.cn", "work_for": "中国科学院武汉植物园", "country": "中国" } ], "ds_managers": [ { "true_name": "方竟", "email": "jingfang@mail.bnu.edu.cn", "work_for": "中国科学院武汉植物园", "country": "中国" } ], "category": "生态" }