{"id":"71c9d290-5f32-45bf-8421-2a08e628753c","title":"青藏高原内陆流域年际湖泊面积数据产品（1986-2019）（V1.0）","title_en":"Data of annual lake area in the endorheic basin of the Qinghai-Tibet Plateau from 1986 to 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":"表格形式，可用EXCEL打开","description":"该数据提供了青藏高原内陆流域582个面积大于1平方公里的湖泊从1986-2019的年湖泊面积。\n\n首先根据JRC和SRTM DEM数据，识别研究区内582个大于1 km2的湖泊。利用Landsat5/7/8所有覆盖湖泊的遥感影像合成每年的Landsat影像，根据NDWI指数和Ostu算法动态分割每个湖泊，并据此计算每个湖泊1986-2019年湖泊面积大小。\n\n本研究基于Landsat卫星遥感影像，利用Google Earth Engine 处理了所有Landsat影像，建立了至今为止最全的青藏高原地区大于1平方公里的年湖泊面积数据集；开发了一套湖泊面积自动提取算法，实现单个湖泊多年面积的批量计算；该数据对分析青藏高原地区湖泊面积动态、水量平衡，及研究青藏高原湖气候变化有重要意义。","doi":"10.11888/Hydro.tpdc.270748","projection":null,"language":"zh","share_type":"protected","east":78.0,"west":100.0,"south":29.0,"north":40.0,"scale":null,"crs":null,"filesize":0.22,"share_policy":"c","ts_created":"2020-08-06T09:14:25.419191+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-19T10:41:36.166594+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":"郑东海","username":"XDA20100100","email":"zhengd@itpcas.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":"<= 1 m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[6],"subtopics":{"metadata":"71c9d290-5f32-45bf-8421-2a08e628753c","three_pole":null,"third_pole":"XDA20020102"},"username":"XDA20020102","review_time":null,"protected_duration":24,"protected_describe":"保护期结束后，离线申请下载","is_important":false,"hit_count":3933}