{"id":"b98e729f-3219-4e9c-81c3-c9cf8d6eccba","title":"青藏高原1公里分辨率多年冻土概率图（2019）","title_en":"The 1-km Permafrost Zonation Index Map over the Tibetan Plateau (2019)","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":"DatasetS1: 青藏高原1公里分辨率1979至1999年平均气温\nDatasetS2: 青藏高原1公里分辨率2003至2010归一化平均积雪天数\nDatasetS3: 青藏高原1公里分辨率2002至2017年最大归一化植被指数的中位数\nDatasetS4: 青藏高原1公里分辨率多年冻土概率值\nDatasetS5: 青藏高原湖泊数据集\nDatasetS6: 青藏高原冰川数据集","description":"基于最新发布的青藏高原多年冻土存在性证据数据集，利用统计模型计算得到了1公里分辨率青藏高原多年冻土概率分布图。该图考虑了气温、积雪和植被这三个多年冻土分布控制性因素，因此能够准确地反应青藏高原冻土的空间异质性。根据1000多个实测资料验证和与已有多年冻土图的对比结果显示，该图的整体分布精度为82.5%，卡帕系数可达到0.62，在多年冻土下界表现出了更好的分类效果。结果显示，青藏高原多年冻土区面积约为1.54 (1.35–1.66) 百万平方公里, 约占陆地面积的 60.7 (54.5– 65.2)% 。多年冻土面积 约为 1.17 (0.95–1.35）百万平方公里，约占46 (37.3–53.0)%。","doi":"10.11888/Geocry.tpdc.270215","projection":"WGS84","language":"zh","share_type":"online","east":105.0,"west":73.5,"south":26.0,"north":40.0,"scale":null,"crs":null,"filesize":185.0,"share_policy":"a","ts_created":"2019-09-26T21:35:14.840113+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-10-08T15:13:52.987389+08:00","time_description":"无","datas_group":0,"time_description_en":"","data_format":null,"project":[11,12],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"金会军","username":"金会军","email":"hjjin@lzb.ac.cn","is_cancel_expert":false}],"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":"km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"b98e729f-3219-4e9c-81c3-c9cf8d6eccba","three_pole":null,"third_pole":null},"username":"Bin Cao (曹斌)","review_time":"2019-09-27T22:19:04.890387+08:00","protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":5295}