{"id":"f2803897-c738-4725-992f-35b967368db0","title":"青海省主要年份公路桥梁（1990-2004）","title_en":"Main highway bridges in Qinghai Province (1990-2004)","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"该数据集以Excel格式存储，包含了1张工作表，是主要年份公路桥梁1990-2004年.xls统计。数据文件可以用office软件打开，或可导入到关系型数据库系统，数据表涉及的单位为座、延米。","description":"该数据集记录了青海省主要年份公路桥梁的统计数据，数据是按行年份划分的，按照孔径和使用年限分组。数据整理自青海省统计局发布的青海省统计年鉴。数据集包含1个数据表，为：主要年份公路桥梁1990-2004年.xls。其中2004年特大桥按国家规定的标准重新进行了划分数据。1990-2004年的数据表共有6个字段，分别为：\n字段1：特大桥\n字段2：大桥\n字段3：中桥\n字段4：小桥\n字段5：隧道\n字段6：永久式\n字段7：公路隧道","doi":"","projection":null,"language":"zh","share_type":"online","east":102.0,"west":89.0,"south":31.0,"north":40.0,"scale":null,"crs":null,"filesize":0.022,"share_policy":"a","ts_created":"2021-03-18T13:13:53.854715+08:00","doi_type":"国际公开共享数据","ts_updated":"2021-04-16T16:50:52.537936+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":null,"project":[11],"specials":["82602369-b196-4804-b02e-09edb30e1a40"],"cite":null,"review_status":5,"review_invite":[],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"Yearly","spatial_resolution":"-","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"f2803897-c738-4725-992f-35b967368db0","three_pole":null,"third_pole":null},"username":"赵虎","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":496}