当前排水系统形状的全球数据集具有相对较低的空间分辨率。本数据集通过使用 90 米分辨率的数字高程模型 （DEM）计算全球大于 50 平方公里的流域盆地，获得一个新的数据集（Basin90m），流域盆地的总数为 667629。对于每个流域，提取最长河道的空间分布和河流的蜿蜒曲折，计算流域盆地的基本几何参数，例如面积、长度、宽度、纵横比、坡度和高程。Basin90m 由包含全球流域盆地和河道的矢量文件（ESRI Shapefile 格式）组成。流域和河流数据的文件大小分别为 7.8 GB 和 2.5 GB。所有计算都使用 MATLAB 脚本自动进行。有关 Basin90m 的更详细描述，请参阅我们提交的数据描述文章，标题为“A global dataset of the shape of drainage systems”。
\nBasin90m 数据集包括四个部分的数据。第一部分包括面积大于 50 km² 的全球流域，数据格式为 ESRI Shapefile。排水系统的 8 个指标存储在盆地 shapefile 的属性表中。“Basins” 文件夹包含 6 个子文件夹，每个子文件夹代表一个大洲，每个大洲的子文件夹都包含该大洲中的所有流域，按不同的河流顺序分类。例如，“South America” 子文件夹包含对应于流序 1-9 的 9 个 shapefile 文件。shapefile 文件的名称包括其大洲和河流顺序信息,例如，“South_America_Basin_8.shp” 表示南美洲的所有流域，流序为 8。Basin90m 数据的第二部分由全球主要河道组成。每个流域最长的河道存储在名为 “Rivers” 的文件夹中。此文件夹的内部结构与 “Basins” 文件夹相同。例如，“South_America_River_8.shp” 表示南美洲的主要河道，其流序为 8。Basin90m 数据的第三部分是名为 “Basin90m” 的 Excel 文件。此文件包含所有盆地的 8 个形态测量参数。它包括全局合并的工作表和区分不同流顺序的工作表。Ba-sin90m 数据的第四部分是一个名为“Matlab_code”的文件夹，其中包含用于排水系统自动引流及其形态参数的 Matlab 代码。", "ds_source": "
数据来源于GFZ DATA SERVICES（https://doi.org/10.5880/GFZ.4.6.2023.004）。", "ds_process_way": "
利用90米分辨率的数字高程模型（DEM）计算全球大于50 km2的流域，获得一个新的数据集（Basin90m）,对于每个流域，提取最长河道和河流弯度的空间分布,计算流域的基本几何参数，如面积、长度、宽度、纵横比、坡度和高程。", "ds_quality": "
数据质量良好。", "ds_acq_start_time": "2023-01-01 00:00:00", "ds_acq_end_time": "2023-12-31 00:00:00", "ds_acq_place": "全球", "ds_acq_lon_east": 180.0, "ds_acq_lat_south": -90.0, "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": "open-access", "ds_total_size": 6918768521, "ds_files_count": 6, "ds_format": "shp,excel,", "ds_space_res": "90米", "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "经纬度投影（EPSG:4326）", "ds_thumbnail": "f4e3add3-63f2-4169-b26f-8f97bd003e69.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "52b7b79b-860c-49a5-9083-9a70cf8bed5a", "ds_serv_man": "敏玉芳", "ds_serv_phone": "09314967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.55", "170.99" ], "quality_level": 3, "publish_time": "2024-11-28 11:00:59", "last_updated": "2025-04-24 16:15:05", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB6650.2024", "i18n": { "en": { "title": "Basin90m, a new global drainage basin dataset", "ds_format": "shp,excel,", "ds_source": "
Data sourced from GFZ Data Services（ https://doi.org/10.5880/GFZ.4.6.2023.004 ）.", "ds_quality": "
The data quality is good.", "ds_ref_way": "", "ds_abstract": "
The global dataset of current drainage system shapes has relatively low spatial resolution. This dataset uses a 90 meter resolution digital elevation model (DEM) to calculate watershed basins larger than 50 square kilometers worldwide, resulting in a new dataset (Basin90m) with a total of 667629 watershed basins. For each watershed, extract the spatial distribution of the longest river channel and the meandering nature of the river, and calculate the basic geometric parameters of the watershed basin, such as area, length, width, aspect ratio, slope, and elevation. Basin90m consists of vector files (ESRI Shapefile format) containing global basin and river channels. The file sizes for watershed and river data are 7.8 GB and 2.5 GB, respectively. All calculations are automatically performed using MATLAB scripts. For a more detailed description of Basin90m, please refer to our submitted data description article titled 'A global dataset of the shape of drainage systems\n
The Basin90m dataset consists of four parts of data. The first part includes global watersheds with an area greater than 50 km ², and the data format is ESRI Shapefile. The 8 indicators of the drainage system are stored in the attribute table of the basin shapefile. The 'Basins' folder contains 6 subfolders, each representing a continent, and each continent's subfolders contain all the watersheds in that continent, classified in different river orders. For example, the \"South America\" subfolders contain 9 shapefile files corresponding to streams 1-9. The name of the shapefile file includes its continent and river sequence information, for example, \"South_Samerica_Sasin_8. shp\" represents all watersheds in South America with a flow sequence of 8. The second part of the Basin90m data consists of major rivers worldwide. The longest river in each watershed is stored in a folder named 'Rivers'. The internal structure of this folder is the same as the 'Basins' folder. For example, 'South_ Americas River_8. shp' represents the main river channel in South America, with a flow sequence of 8. The third part of the Basin90m data is an Excel file named 'Basin90m'. This file contains 8 morphological measurement parameters for all basins. It includes globally merged worksheets and worksheets that distinguish different flow orders. The fourth part of the Ba-sin90m data is a folder called \"Matlab_comde\", which contains Matlab code for automatic drainage of drainage systems and their morphological parameters.
", "ds_time_res": "", "ds_acq_place": "Global", "ds_space_res": "90米", "ds_projection": "Longitude and latitude projection (EPSG:4326)", "ds_process_way": "Using a 90 meter resolution digital elevation model (DEM) to calculate watersheds larger than 50 km2globally, a new dataset (Basin90m) is obtained. For each watershed, the spatial distribution of the longest river channel and river curvature is extracted, and the basic geometric parameters of the watershed, such as area, length, width, aspect ratio, slope, and elevation, are calculated.", "ds_ref_instruction": "" } }, "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": [ "90m", "全球", "流域" ], "ds_subject_tags": [ "水文学", "地球科学其他学科" ], "ds_class_tags": [], "ds_locus_tags": [ "全球" ], "ds_time_tags": [ 2023 ], "ds_contributors": [ { "true_name": "贺传奇", "email": "chuanqihe@outlook.com", "work_for": "中国地质大学（武汉）地球科学学院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "贺传奇", "email": "chuanqihe@outlook.com", "work_for": "中国地质大学（武汉）地球科学学院", "country": "中国" } ], "ds_managers": [ { "true_name": "贺传奇", "email": "chuanqihe@outlook.com", "work_for": "中国地质大学（武汉）地球科学学院", "country": "中国" } ], "category": "水文" }