{"id":"0231c972-8460-4691-a187-70e4cc356f60","title":"青藏高原新绘制冻土分布图（2017）","title_en":"A new map of permafrost distribution on the Tibetan Plateau (2017)","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：数据以栅格tiff格式存储，文件名称为Perma_Distr_map.tif\n数据读取方式：可以用Arcgis、Qgis等遥感软件打开，读取tif文件","description":"青藏高原是世界上中低纬度地区冻土面积最大的地区。目前已编制了一些多年冻土分布图，但由于资料来源有限、标准不明确、验证不充分、高质量空间数据集的缺乏，使得在TP上绘制多年冻土分布图存在较大的不确定性。\n本数据集基于改进的中分辨率成像光谱仪(MODIS)地表温度(LSTs)2003-2012年1km晴空MOD11A2 (Terra MODIS)和MYD11A2(Aqua MODIS)产品(reprocessing version 5)的冻融指数及冻土顶部温度（TTOP）模型模拟了多年冻土的分布，生成了青藏高原冻土图。并通过野外地面观测、土壤含水率和容重等各种调查数据对该图进行了验证。\n冻土属性主要包括：季节性冻土（Seasonally frozen ground）、多年冻土（Permafrost）、非冻土区域（Unfrozen ground）。\n数据集为青藏高原冻土研究提供了更详细的冻土分布资料和基础资料。","doi":"10.11888/Geocry.tpdc.270468","projection":null,"language":"zh","share_type":"online","east":110.0,"west":70.0,"south":20.0,"north":50.0,"scale":null,"crs":null,"filesize":15.1,"share_policy":"a","ts_created":"2019-06-13T16:53:50.822237+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-20T00:37:56.771501+08:00","time_description":"2017","datas_group":3,"time_description_en":"","data_format":null,"project":[10,11],"specials":["1832ecb3-70d0-4b5e-bdb5-2e9ff4ad1efe","f2a78cde-1c98-4241-94dc-7532eba32b80"],"cite":null,"review_status":5,"review_invite":[],"review_editor":{"id":21057,"last_login":"2022-04-02T11:43:37.753860+08:00","username":"gecm","email":"gechm@lzb.ac.cn","is_active":true,"is_staff":true,"user_name":"盖春梅"},"data_sources":"","temporal_resolution":"Yearly","spatial_resolution":"km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[6],"subtopics":{"metadata":"0231c972-8460-4691-a187-70e4cc356f60","three_pole":null,"third_pole":null},"username":"盖春梅","review_time":"2019-06-13T17:43:58.010533+08:00","protected_duration":null,"protected_describe":null,"is_important":true,"hit_count":14585}