{"id":"64f7c813-9acb-4a03-91a9-ec9e558e9c0e","title":"黑河流域历史时期垦殖绿洲空间分布数据集","title_en":"Cultivated oasis distribution in the Heihe River Basin during the historical period","serial":"黑河计划","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":"","description":"以历史文献、20世纪60年代地形图和遥感影像为基础，利用居民点、灌渠等地物重建了黑河流域汉代到民国时期古绿洲分布范围和面积数据。\n该数据以ArcGIS的shapefile格式提供，采用WGS 1984 UTM坐标系，Transverse Mercator投影格网，中央经线99°E。数据类型为面状矢量，属性数据包括面积。","doi":"10.3972/heihe.092.2013.db","projection":"4326","language":"zh","share_type":"online","east":102.0,"west":98.0,"south":37.8,"north":42.7,"scale":500000,"crs":null,"filesize":1.0,"share_policy":"a","ts_created":"2013-08-01T20:30:23+08:00","doi_type":null,"ts_updated":"2021-04-20T00:47:53.579188+08:00","time_description":"","datas_group":3,"time_description_en":null,"data_format":"shp","project":[10,11,15],"specials":["4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":"颉耀文,黑河流域历史时期垦殖绿洲空间分布数据集，黑河计划数据管理中心，2013.DOI:10.3972/heihe.092.2013.db","review_status":5,"review_invite":[],"review_editor":null,"data_sources":"","temporal_resolution":null,"spatial_resolution":null,"license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[158],"subtopics":{"metadata":"64f7c813-9acb-4a03-91a9-ec9e558e9c0e","three_pole":null,"third_pole":null},"username":"汪桂生","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":6366}