GLASS光合有效辐射吸收比产品（Fraction of Photosynthetically Active Radiation，简称FAPAR）与LAI V6 产品保持一致，是利用卫星数据和现有FAPAR、LAI产品反演得到的GLASS-FAPAR产品空间范围为全球陆表，空间分辨率达到250m，时间分辨率为8天。GLASS-FAPAR产品输出格式为HDF-EOS标准格式，包含光合有效辐射吸收比和质量标识标两个数据集。\n
本数据集收集了甘肃省范围内h25v04、h25v05、h26v05三个条带2000-2021年的数据。
", "ds_source": "马里兰大学GLASS产品http://www.glass.umd.edu/Download.html
", "ds_process_way": "GLASS FAPAR近似为一减去PAR在整个树冠中的透射率，这可以从GLASS LAI产品和其他信息计算得出。该算法可以有效地估计与LAI乘积在物理上一致的FAPAR值。来自MODIS数据的GLASS FAPAR乘积是当地时间上午10:30的瞬时值，非常接近每日平均PAPAR。
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2000-01-01 00:00:00", "ds_acq_end_time": "2021-12-31 00:00:00", "ds_acq_place": "甘肃省", "ds_acq_lon_east": 108.7075, "ds_acq_lat_south": 32.596111111111114, "ds_acq_lon_west": 92.33777777777777, "ds_acq_lat_north": 42.79333333333333, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 41924792942, "ds_files_count": 9046, "ds_format": "hdf", "ds_space_res": "250", "ds_time_res": "8天", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "951b51ab-c537-4d89-a844-a27f88b017a9.png", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "526ff655-4cd4-4650-bb86-6fd3481dfb65", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2023-12-27 15:29:46", "last_updated": "2025-06-30 16:29:51", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.GSEER.DB4143.2024", "i18n": { "en": { "title": "Gansu Province photosynthetically active radiation absorption ratio (FAPAR) dataset (2000-2021)", "ds_format": "hdf", "ds_source": "University of Maryland GLASS Products http://www.glass.umd.edu/Download.html
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "The GLASS photosynthetically active radiation absorption ratio (FAPAR) product is consistent with the LAI V6 product, and is obtained by using satellite data and existing FAPAR and LAI products to invert the GLASS-FAPAR product. The spatial range of the GLASS-FAPAR product is the global land surface, with a spatial resolution of 250m and a temporal resolution of 8 days. The output format of GLASS-FAPAR product is HDF-EOS standard format, which includes two datasets: photosynthetically active radiation absorption ratio and quality identification label.\n
This dataset collected data from three bands, H25v04, H25v05, and H26v05, in Gansu Province from 2000 to 2021.
", "ds_time_res": "8天", "ds_acq_place": "Gansu Province", "ds_space_res": "250", "ds_projection": "", "ds_process_way": "GLASS FAPAR is approximately equal to subtracting the transmittance of PAR throughout the entire tree crown, which can be calculated from GLASS LAI products and other information. This algorithm can effectively estimate the FAPAR value that is physically consistent with the product of LAI. The GLASS FAPAR product from MODIS data is an instantaneous value at 10:30 am local time, which is very close to the daily average PAPAR.
", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "陆表特征参量产品", "GLASS", "光合有效辐射吸收比 (FAPAR)" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "甘肃省" ], "ds_time_tags": [ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 ], "ds_contributors": [ { "true_name": "张耀南", "email": "yaonan@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "李红星", "email": "lihongxing@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "敏玉芳", "email": "myf@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "生态" }