本数据为2001年-2020年石羊河流域植被水分利用效率数据，空间分辨率1公里。本数据产品定义的植被水分利用效率为植被总初级生产力与蒸散发量之间的比值(单位：克碳/千克水/年)，表征了植被光合作用碳同化与水消耗之间的权衡关系，反映植被区生态系统服务能力。\n
植被蒸散发量来自本数据平台中的“石羊河流域1公里分辨率地表蒸散发年总量数据集（2001年-2020年）”，该数据产品由多源遥感数据等驱动的ETMonitor模型估算；植被总初级生产力由考虑了土壤水分胁迫后改进的光能利用率模型EF-LUE估算。 本数据产品单位为克碳/千克水/年，转换系数为0.01。", "ds_source": "
气象数据：欧洲中期天气预报中心ERA5全球再分析数据；遥感数据：GLASS等地表特征数据产品。", "ds_process_way": "
遥感影像的拼接、裁剪、降尺度、重采样等处理。", "ds_quality": "
数据质量良好。", "ds_acq_start_time": "2001-01-01 00:00:00", "ds_acq_end_time": "2020-12-31 00:00:00", "ds_acq_place": "石羊河流域", "ds_acq_lon_east": 104.26, "ds_acq_lat_south": 37.12, "ds_acq_lon_west": 101.11999999999999, "ds_acq_lat_north": 39.480000000000004, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 819089, "ds_files_count": 2, "ds_format": "tif", "ds_space_res": "1000", "ds_time_res": "年", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "489402f6-5a71-4029-a28a-3f7b6c1bc695.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "3aa98856-2cf9-444f-a9db-3992b8985eec", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.nieer.db3913.2023", "subject_codes": [ "170.45" ], "quality_level": 3, "publish_time": "2023-08-23 15:15:31", "last_updated": "2025-05-29 17:26:48", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB3913.2023", "i18n": { "en": { "title": "Shiyang River Basin 1-kilometer Resolution Vegetation Water Use Efficiency Dataset (2001-2020)", "ds_format": "tif", "ds_source": "
Meteorological data: European Center for Medium-Range Weather Forecasts ERA5 global reanalysis data; Remote sensing data: GLASS and other surface characterization data products.", "ds_quality": "
Data quality is good.", "ds_ref_way": "", "ds_abstract": "
This data is the vegetation water use efficiency data for the Shiyang River Basin from 2001 to 2020, with a spatial resolution of 1 kilometer. The vegetation water use efficiency defined in this data product is the ratio between the total primary productivity of vegetation and the evapotranspiration (unit: grams of carbon/kilograms of water/year), which characterizes the trade-off between photosynthesis carbon assimilation and water consumption of vegetation, and reflects the ecosystem service capacity of the vegetation area.\n
Vegetation evapotranspiration is derived from the “Shiyang River Basin 1-kilometer resolution total annual surface evapotranspiration dataset (2001-2020)”, which is estimated by the ETMonitor model driven by multi-source remote sensing data, etc.; Vegetation TPP is estimated by taking soil water stress into account, and the total primary productivity of vegetation is estimated by taking soil water stress into account, and the total primary productivity of vegetation is estimated by taking soil water stress into account. This data product was estimated by the ETMonitor model driven by multi-source remote sensing data, etc.; the total primary productivity of vegetation was estimated by the EF-LUE model, which is an improved model of light energy utilization rate after considering soil moisture stress. This data product is expressed in grams of carbon/kg of water/year with a conversion factor of 0.01.
", "ds_time_res": "年", "ds_acq_place": "Shiyang River Basin", "ds_space_res": "1000", "ds_projection": "", "ds_process_way": "Processing of remote sensing images such as splicing, cropping, downscaling, and resampling.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "https://creativecommons.org/licenses/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": [ "植被水分利用效率", "1公里分辨率", "石羊河流域" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "石羊河流域" ], "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": "蒋敏", "email": "jiangmin@aircas.ac.cn", "work_for": "中国科学院空天信息创新研究院", "country": "中国" }, { "true_name": "贾立", "email": "jiali@radi.ac.cn", "work_for": "中国科学院遥感与数字地球研究所", "country": "中国" }, { "true_name": "郑超磊", "email": "zhengcl@aircas.ac.cn", "work_for": "中国科学院空天信息创新研究院", "country": "中国" }, { "true_name": "陈琪婷", "email": "chenqt@aircas.ac.cn", "work_for": "中国科学院空天信息创新研究院", "country": "中国" }, { "true_name": "胡光成", "email": "hugc@aircas.ac.cn", "work_for": "中国科学院空天信息创新研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "陈琪婷", "email": "chenqt@aircas.ac.cn", "work_for": "中国科学院空天信息创新研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "陈琪婷", "email": "chenqt@aircas.ac.cn", "work_for": "中国科学院空天信息创新研究院", "country": "中国" } ], "category": "其他" }