数据概况：本套数据主要包括黑河流域内主要道路的空间分布，属性包括了道路分级和道路编码，数据基准年为2010年。
\n\n数据内容说明：数据主要有两个重要属性即道路分级、道路编码（code），其中道路分级分为国道、省道、县道、乡道、专用道，道路编码按照交通部门的公路等级代码统一定义.
", "ds_source": "地形图、遥感影像以及甘肃省交通厅2009年最新公路交通图
", "ds_process_way": "数字矢量化
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2010-01-01 00:00:00", "ds_acq_end_time": "2010-12-31 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": 1911671, "ds_files_count": 2, "ds_format": "矢量", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "+proj=longlat +datum=WGS84 +no_defs ", "ds_thumbnail": "2426dddb-8edb-4280-b84b-ee76e92758f3.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": "2020-12-30 18:00:09", "last_updated": "2023-08-23 16:46:41", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.Westdc.2020.376", "i18n": { "en": { "title": "Primary road network dataset of the Heihe river basin", "ds_format": "Shapefile", "ds_source": "Topographic map, remote sensing image and the latest road traffic map of Gansu Provincial Department of transportation in 2009
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "Data overview: This set of data mainly includes the spatial distribution of main roads in the Heihe River Basin, and the attributes include road classification and road coding. The data base year is 2010.
\nData content description: the data mainly has two important attributes, namely, road classification and road code. The road classification is divided into national road, provincial road, county road, township road and special road. The road code is uniformly defined according to the road grade code of the transportation department
", "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
", "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", "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": [ "道路分级、道路编码，道路分级分为国道、省道、县道、乡道、专用道" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "中下游", "黑河" ], "ds_time_tags": [ 2010 ], "ds_contributors": [ { "true_name": "寒区旱区科学数据中心", "email": "westdc@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "吴立宗", "email": "wulizong@pric.org.cn", "work_for": "国家极地科学数据中心", "country": "中国" } ], "ds_managers": [ { "true_name": "寒区旱区科学数据中心", "email": "westdc@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "基础地理" }