{ "created": "2026-06-08 10:30:19", "updated": "2026-06-10 11:45:22", "id": "c5defa72-baf6-4922-8fe8-d51bc24823f7", "version": 4, "ds_topic": null, "title_cn": "全球表达河-湖拓扑关系的多层级流域数据集RiverLakeBasins", "title_en": "RiverLakeBasins: A Global Dataset of Nested River-Watersheds and Lake-Hillslopes", "ds_abstract": "

  流域是水文模拟和水资源管理的基本空间单元。但现有全球流域数据集对湖泊和水库的表达尚不完善，难以满足流域系统模拟和科学管理的需求。针对该问题，RiverLakeBasins创新性地将湖泊水库及其汇水坡面单元纳入嵌套流域体系之中，实现了坡面-湖泊-河流之间的完整拓扑关联表达，为全球尺度水文模拟、水资源管理、湖泊-河流相互作用研究以及数字流域建设提供了重要基础数据。该数据集的生产主要基于MERIT Hydro、Hydro LAKES和NWEI产品，通过三个阶段进行构建。首先，系统识别需要引入湖泊信息进行重构的当前层级NWEI流域单元。筛选原则为：若湖泊完全位于某一层级流域内部，则该流域被纳入更新范围；若湖泊跨越多个相邻子流域，则选取能够完整覆盖该湖泊的上一级流域进行处理。该策略确保每个湖泊及其汇水区在分层框架中作为一个一致、完整的水文单元进行表达，避免了湖泊分割。随后，在选定流域范围内，基于流向与汇流累积数据提取河网，并针对河湖空间不匹配问题进行优化处理，包括去除湖泊内部的虚假闭合河段，以及补充缺失的湖泊—下游河段连接关系，再沿湖泊边界追踪湖泊的坡面。本研究根据汇流路径特征，将排水区划分为两类：一类为通过河网汇入湖泊的河流流域单元，另一类为直接以坡面径流形式汇入湖泊的湖泊坡面单元。所有指向同一湖泊的坡面单元被合并为整体，以清晰区分河道汇流与坡面汇流。最后，将湖泊坡面集成到原有嵌套流域体系中。通过空间叠加操作，对受湖泊影响的流域进行更新与拆分，形成新的河流流域、湖泊单元及湖泊坡面单元，并记录明确的上下游拓扑关系。在此基础上，引入扩展的分层编码体系，为每个空间单元分配唯一标识，并记录其下游连接关系和关键属性，从而构建完整的河流-湖泊-坡面水文拓扑结构。", "ds_source": "", "ds_process_way": "", "ds_quality": "", "ds_acq_start_time": null, "ds_acq_end_time": null, "ds_acq_place": "全球", "ds_acq_lon_east": 180.0, "ds_acq_lat_south": 89.0, "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": 8611778532, "ds_files_count": 0, "ds_format": "*.gdb", "ds_space_res": "90米", "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "ae69d56a-600d-4547-aaf5-ea0d710503cc.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "None", "ds_from_station": null, "organization_id": "52b7b79b-860c-49a5-9083-9a70cf8bed5a", "ds_serv_man": null, "ds_serv_phone": null, "ds_serv_mail": null, "doi_value": "", "subject_codes": [ "170", "170.5520" ], "quality_level": 0, "publish_time": "2026-06-09 11:00:07", "last_updated": "2026-06-09 15:55:16", "protected": false, "protected_to": "2026-06-30 00:00:00", "lang": "zh", "cstr": "11738.11.ncdc.hydrology.db7447.2026", "i18n": { "en": { "title": "RiverLakeBasins: A Global Dataset of Nested River-Watersheds and Lake-Hillslopes", "ds_format": "*.gdb", "ds_source": "", "ds_quality": "", "ds_ref_way": "", "ds_abstract": "Accurate delineation of watershed boundaries is fundamental for hydrological modeling, water resource management, and Earth system research. However, most global watershed datasets focus primarily on river networks while overlooking the critical role of lakes, which can significantly alter flow paths, watershed boundaries, and hydrological connectivity. This study introduces RiverLakeBasins, a global-scale nested watershed dataset that explicitly integrates lakes into a hierarchical delineation framework by refining and extending the Pfafstetter coding system. Using the MERIT Hydro and HydroLAKES datasets, we simultaneously delineate river-watersheds and lake drainage areas (lake-hillslopes) across multiple spatial levels. We develop reproducible algorithms to optimize stream networks, delineate lake-hillslopes, and reconstruct upstream–downstream flow relationships among rivers, lakes, and lake-hillslopes. Validation against benchmark datasets shows high spatial and topological accuracy: for 97% of shared lakes, the upstream watershed area differs by <5% relative to Lake-TopoCat. On the Qinghai–Tibet Plateau, RiverLakeBasins identifies endorheic lakes with 97.4% accuracy and exorheic lakes with 99.1%, outperforming HydroBASINS. Representative case studies demonstrate improved lake–river connectivity in complex landscapes. By explicitly incorporating lakes and preserving scale-consistent connectivity, RiverLakeBasins provides a global, multi-level dataset to support hydrological modeling, runoff simulation, aquatic ecosystem research, and integrated water resource management.", "ds_time_res": "", "ds_acq_place": "global", "ds_space_res": "", "ds_projection": "", "ds_process_way": "", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 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, "belong_to_nieer": false, "ds_topic_tags": [ "湖泊-河流-坡面拓扑关系", "流域划分", "多层级流域" ], "ds_subject_tags": [ "地球科学", "水文地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "全球" ], "ds_time_tags": [], "ds_contributors": [ { "true_name": "刘军志", "email": "liujunzhi@lzu.edu.cn", "work_for": "兰州大学泛第三级环境中心", "country": "中国" }, { "true_name": "张斌", "email": "binzhang2025@lzu.edu.cn", "work_for": "兰州大学泛第三级环境中心", "country": "中国" }, { "true_name": "阙烨峰", "email": "LoserOne0923@gmail.com", "work_for": "北京中安智能信息科技有限公司南京分公司", "country": "中国" }, { "true_name": "徐进帅", "email": "xujsh2023@lzu.edu.cn", "work_for": "兰州大学泛第三级环境中心", "country": "中国" }, { "true_name": "侯伟", "email": "houwei@casm.ac.cn", "work_for": "中国测绘科学研究院", "country": "中国" }, { "true_name": "杨万宏", "email": "wayang@uoguelph.ca", "work_for": "圭尔夫大学地理、环境与地理信息科学系", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "刘军志", "email": "liujunzhi@lzu.edu.cn", "work_for": "兰州大学泛第三级环境中心", "country": "中国" }, { "true_name": "张斌", "email": "binzhang2025@lzu.edu.cn", "work_for": "兰州大学泛第三级环境中心", "country": "中国" }, { "true_name": "阙烨峰", "email": "LoserOne0923@gmail.com", "work_for": "北京中安智能信息科技有限公司南京分公司", "country": "中国" }, { "true_name": "徐进帅", "email": "xujsh2023@lzu.edu.cn", "work_for": "兰州大学泛第三级环境中心", "country": "中国" }, { "true_name": "侯伟", "email": "houwei@casm.ac.cn", "work_for": "中国测绘科学研究院", "country": "中国" }, { "true_name": "杨万宏", "email": "wayang@uoguelph.ca", "work_for": "圭尔夫大学地理、环境与地理信息科学系", "country": "中国" } ], "ds_managers": [ { "true_name": "刘军志", "email": "liujunzhi@lzu.edu.cn", "work_for": "兰州大学泛第三级环境中心", "country": "中国" }, { "true_name": "张斌", "email": "binzhang2025@lzu.edu.cn", "work_for": "兰州大学泛第三级环境中心", "country": "中国" } ], "category": "水文" }