{"id":"e5f78f43-c28e-4cf3-946b-e705f19c994f","title":"祁连山多年冻土分布图","title_en":"Map of permafrost distribution in the Qilian Mountains","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":"文件命名：祁连山多年冻土分布图.tif ，表示近年来祁连山多年冻土分布情况。数据读取方式：使用ArcGis平台下的Arcmap直接打开使用，会生成栅格格式的文件，建议10.3以上的版本","description":"本数据包括祁连山连续多年冻土、不连续多年冻土以及季节冻土的空间分布图。本数据基于野外科学考察、道路勘察钻孔点并结合前人所获得的多年冻土下界海拔资料，回归得出多年冻土下界海拔公式。其中，DEM数据采用美国太空总署(NASA)和国防部国家测绘局(NIMA)联合测量的SRTM(Shuttle Radar Topography Mission)数据，数据转化为GCS·WGS·1984坐标系后，重采样成100 m的空间分辨率，采用以此数据海拔3 000 m作为界定祁连山区范围。借助ArcGIS平台在DEM数据的支持下，模拟出分辨率为100 m的祁连山区多年冻土分布图。回归得出祁连山区多年冻土分布下界模型，并通过了显著性检验。通过已有的548个钻孔数据点检验，多年冻土区验证正确率为90.11%。本数据可用于祁连山地下冰含量以及多年冻土退化释放水量估算，并对祁连山生态环境整治和生态文明建设具有一定借鉴意义。","doi":"10.11888/Geocry.tpdc.270456","projection":"WGS84","language":"zh","share_type":"offline","east":103.05,"west":93.5,"south":39.84,"north":35.84,"scale":100,"crs":null,"filesize":37.0,"share_policy":"c","ts_created":"2020-07-06T13:37:47.926169+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-19T18:54:31.892882+08:00","time_description":"","datas_group":0,"time_description_en":"","data_format":null,"project":[11],"specials":["f2a78cde-1c98-4241-94dc-7532eba32b80"],"cite":null,"review_status":5,"review_invite":[{"user_name":"叶庆华","username":"叶庆华","email":"yeqh@itpcas.ac.cn","is_cancel_expert":true}],"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":"1 year < x < 10 year","spatial_resolution":"10m - 100m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[6],"subtopics":{"metadata":"e5f78f43-c28e-4cf3-946b-e705f19c994f","three_pole":null,"third_pole":"XDA20100103"},"username":"XDA20100103","review_time":"2020-07-08T11:37:08.084885+08:00","protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":5200}