黄河是我国第二长河，黄河泥沙问题引起全世界人民的关注。本数据根据全国1:400万河流矢量图为底图，利用黄河上游流域边界裁剪而成。河流矢量图是利用地形图提取流域边界的一个关键要素，同时也是做洪水演进和泥沙演进的关键要素。
\n\n本图以ArcGIS,.shp文件存储，包括自黄河源区到头道拐的干流和支流矢量图。河流矢量图是利用地形图提取流域边界的一个关键要素，同时也是做洪水演变和泥沙演进的关键要素。
", "ds_source": "全国1:400万河流矢量图
", "ds_process_way": "根据全国1:400万河流矢量图为底图，利用黄河上游流域边界裁剪而成
", "ds_quality": "由于三湖河口至河口镇河流比降极小，因此该段流域边界存在一定误差。
", "ds_acq_start_time": "2000-01-01 00:00:00", "ds_acq_end_time": "2009-01-01 00:00:00", "ds_acq_place": "黄河上游", "ds_acq_lon_east": 112.0, "ds_acq_lat_south": 32.0, "ds_acq_lon_west": 95.0, "ds_acq_lat_north": 42.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 905287, "ds_files_count": 8, "ds_format": "矢量", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "+proj=longlat +datum=WGS84 +no_defs ", "ds_thumbnail": "c779c1b5-1d26-4c61-8102-e23ca9b53923.png", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "None", "ds_from_station": null, "organization_id": "52b7b79b-860c-49a5-9083-9a70cf8bed5a", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "lihongxing@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2020-12-23 10:31:42", "last_updated": "2023-08-23 17:03:09", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.nieer.2020.1509", "i18n": { "en": { "title": "Vector image of the upper Yellow River", "ds_format": "shp", "ds_source": "Vector map of 1:4 million rivers in China
", "ds_quality": "There is some error in the boundary of this section of the catchment because of the very small specific fall of the river from the mouth of the Three Lakes to the town of Riverhead.
", "ds_ref_way": "", "ds_abstract": "The Yellow River is the second longest river in China and its sediment problem has attracted the attention of people all over the world. This data is based on a 1:4 million river vector map of the whole country as a base map, using the upper Yellow River basin boundary as a clipping. The river vector map is a key element in extracting the basin boundary using topographic maps, and also in doing flood evolution and sediment evolution.
\nThis map is stored as an ArcGIS, .shp file and includes vector maps of the main streams and tributaries from the source area of the Yellow River to the headwaters. The river vector map is a key element in extracting the basin boundaries using topographic maps, as well as doing flood evolution and sediment evolution.
", "ds_time_res": "", "ds_acq_place": "Upper Yellow River", "ds_space_res": "", "ds_projection": "+proj=longlat +datum=WGS84 +no_defs ", "ds_process_way": "According to the 1:4 million River vector map of China as the base map, it is cut by the upper Yellow River basin boundary
", "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. The results published in Chinese refer to the following specifications: the data comes from the national key basic research planning project (973), \"the process and regulation mechanism of aeolian sand flow and sediment in the broad valley of desert in the upper reaches of the Yellow River\" The data set is provided by \"comprehensive data platform of Ningxia Inner Mongolia reach of the Yellow River\", National KeyBasic Research Program of China (2011CB403306), http://http://www.crensed.ac.cn/xxxxxxx”" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "ds_topic_tags": [ "流域边界", "基础地理", "1:400万" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黄河上游", "宁夏", "四川", "内蒙古", "甘肃省", "青海省" ], "ds_time_tags": [ 2012 ], "ds_contributors": [ { "true_name": "薛娴", "email": "xianxue@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": "杜鹤强", "email": "dilikexue119@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "" } ], "ds_managers": [ { "true_name": "薛娴", "email": "xianxue@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" }