数据概况：本套数据主要包括黑河流域内常年河、时令河、河道干河、地面干渠、地面支渠等水系状况，数据基准年为2009年。
\n\n数据制备过程：根据1:10万地形图以及2009年的TM遥感影像数字化获得的。
\n\n数据内容说明：数据主要有三个重要属性即河流等级（GRADE）、河流编码（GB）、河流名称（NAME_CH），其中河流分级是根据strahler分级方式进行的，干流最后的等级达到七级。
\n\n河流编码是根据国家基础地理信息要素字典为标准的。采用基础地理信息要素数据字典标准。
", "ds_source": "1:10万地形图以及2009年的TM遥感影像
", "ds_process_way": "数字矢量化、strahler分级
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2009-01-01 00:00:00", "ds_acq_end_time": "2009-12-31 00:00:00", "ds_acq_place": "黑河流域", "ds_acq_lon_east": 104.19972222222222, "ds_acq_lat_south": 37.7, "ds_acq_lon_west": 96.01666666666667, "ds_acq_lat_north": 43.25, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 13383414, "ds_files_count": 3, "ds_format": "矢量", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "+proj=longlat +datum=WGS84 +no_defs ", "ds_thumbnail": "31a1e818-7835-4fce-96df-c12d59ad0434.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "9c4867b1-5cb1-4de0-abeb-df42547bf41e", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2020-12-18 15:58:58", "last_updated": "2023-08-23 16:46:55", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.Westdc.2020.465", "i18n": { "en": { "title": "River Distribution dataset of the Heihe river basin", "ds_format": "Vector", "ds_source": "1: 100000 topographic map and TM remote sensing image in 2009
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "Data overview: This set of data mainly includes perennial River, seasonal river, river trunk, surface main channel, surface branch channel and other water system conditions in the Heihe River Basin. The data base year is 2009.
\nData preparation process: obtained from 1:100000 topographic map and 2009 TM remote sensing image digitization.
\nData content description: the data mainly has three important attributes, namely, grade, GB and name. The river classification is based on the Strahler classification method, and the final level of the main stream reaches seven levels.
\nRiver coding is based on the national basic geographic information element dictionary. The standard of basic geographic information element data dictionary is adopted.
", "ds_time_res": "", "ds_acq_place": "Heihe River Basin", "ds_space_res": "", "ds_projection": "+proj=longlat +datum=WGS84 +no_defs ", "ds_process_way": "Digital vectorization and Strahler classification
", "ds_ref_instruction": "In order to respect intellectual property rights, protect the rights and interests of data authors, expand the services of data centers, and evaluate the application potential of data, data users are requested to clearly indicate the data source and data authors in the research results (including published papers, works, data products and unpublished research reports, data products, etc.) produced by using data. For data reprinted (secondary or multiple releases), the author must also indicate the source of the original data." } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "ds_topic_tags": [ "河流", "基础地理", "内陆水" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域" ], "ds_time_tags": [ 2009 ], "ds_contributors": [ { "true_name": "年雁云", "email": "yynian@lzu.edu.cn", "work_for": "兰州大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "黑河计划数据管理中心", "email": "westdc@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "" } ], "ds_managers": [ { "true_name": "黑河计划数据管理中心", "email": "westdc@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "" }, { "true_name": "年雁云", "email": "yynian@lzu.edu.cn", "work_for": "兰州大学", "country": "中国" } ], "category": "基础地理" }