{"id":"48f96516-5053-4d28-b88e-c2cdf718374a","title":"咸海流域土地利用数据（2000-2020）","title_en":"A dataset of land use and land cover in the Aral Sea Basin (2000-2020)","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：土地利用数据以栅格格式存储，文件的名称为“yyyy.tif”，其中yyyy代表年，比如2019.tif代表这个栅格数据描述的是2019年咸海流域的土地利用情况。\n数据读取方式：该数据集中的所有tif数据可以直接用Arcgis或者ENVI等主流地理信息系统软件打开，所显示的tif文件就是该文件的图形表达。","description":"（1）数据内容：该数据集包含了咸海流域2000-2020年的土地利用情况；（2）数据来源及加工方法：该数据集来源于欧洲航天局的气候变化倡议土地覆盖地图（http://maps.elie.ucl.ac.be/CCI），在此基础上用咸海流域的边界数据进行掩膜处理，提取出咸海流域的土地利用，同时，根据一定的规则进行合并，将原始的二级类数据合并为包含7个土地利用类型的一级类数据，坐标系为：WGS-1984；（3）数据质量描述：根据现有研究，该数据集的整体准确率达到80%；（4）该数据集可以为生态保护和环境评估提供基础数据支撑，也可以做为土地利用模拟的原始数据。","doi":"","projection":"WGS84","language":"zh","share_type":"online","east":78.21,"west":53.37,"south":33.48,"north":47.12,"scale":null,"crs":null,"filesize":38.0,"share_policy":"a","ts_created":"2021-12-23T10:52:51.913998+08:00","doi_type":"国际公开共享数据","ts_updated":"2022-01-27T20:01:38.615397+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"马明国","username":"mmgswu","email":"mmg@swu.edu.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":"100m - 1km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[6],"subtopics":{"metadata":"48f96516-5053-4d28-b88e-c2cdf718374a","three_pole":null,"third_pole":"XDA20060303"},"username":"XDA20060303","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":132}