该数据集为泾河流域河流分布数据集，包含四级河流和五级河流，根据地形图以及TM遥感影像修订，数据包括空间数据和属性数据。", "ds_source": "
原始数据源于国家基础地理信息中心(https://www.webmap.cn/main.do?method=index)，根据地形图以及Landsat TM遥感影像修订。", "ds_process_way": "
数字矢量化。", "ds_quality": "
数据集通过人工审核控制质量，质量良好。", "ds_acq_start_time": "2018-01-01 00:00:00", "ds_acq_end_time": "2018-12-31 00:00:00", "ds_acq_place": "泾河流域,甘肃省,宁夏回族自治区,陕西省", "ds_acq_lon_east": 108.86583333333333, "ds_acq_lat_south": 34.65, "ds_acq_lon_west": 106.19166666666668, "ds_acq_lat_north": 37.39888888888889, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 25413, "ds_files_count": 2, "ds_format": "矢量", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "8b1224b3-e7a8-4785-8cd5-fcff98847ad1.jpg", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。", "ds_from_station": null, "organization_id": "bf1ae243-c102-4b2d-a2f6-b698468f4401", "ds_serv_man": "敏玉芳 ", "ds_serv_phone": "0931-4967596 ", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.JRiver.db1979.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2022-04-08 10:10:36", "last_updated": "2025-06-30 15:52:27", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.JRiver.db1979.2022", "i18n": { "en": { "title": "River distribution data set of Jinghe River Basin (2018)", "ds_format": "Vector", "ds_source": "
The original data comes from the national basic geographic information center（ https://www.webmap.cn/main.do?method=index ）, revised according to topographic map and Landsat TM remote sensing image.", "ds_quality": "
The quality of the data set is controlled through manual audit, and the quality is good.", "ds_ref_way": "", "ds_abstract": "
The data set is the river distribution data set of Jinghe River Basin, including class IV and class V rivers. It is revised according to the topographic map and TM remote sensing image. The data includes spatial data and attribute data.
", "ds_time_res": "", "ds_acq_place": "Jinghe River Basin, Gansu Province, Ningxia Hui Autonomous Region, Shaanxi Province", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Digital vectorization.", "ds_ref_instruction": "When using the data, users should clearly state the source of the data in the text and quote the reference method provided by this metadata in the References section." } }, "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": [ "泾河流域", "四级河流", "五级河流" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "陕西省", "泾河流域", "甘肃省", "宁夏回族自治区" ], "ds_time_tags": [ 2018 ], "ds_contributors": [ { "true_name": "张耀南", "email": "yaonan@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": "李红星", "email": "lihongxing@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_managers": [ { "true_name": "敏玉芳", "email": "myf@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" }