{"id":"10006cd6-e49b-4bcf-b49c-8d7c889be81d","title":"咸海流域耕地数据集（2018）","title_en":"Cultivated land data set of Aral Sea Basin (2018)","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：将咸海流域分为了阿姆河和锡尔河两个子流域，又将它们分别分成了不同的灌区，文件名称为“nukus.shp”的代表为nukus灌区的耕地数据。\n数据读取方式：该数据集中的所有.shp文件可以直接用ArcGIS打开，所显示的shp文件就是该数据的图形表达。","description":"数据内容：咸海流域耕地数据。\n数据来源及加工方法：原始卫星影像来源于美国谷歌地球，为了获得高分辨率下的无云影像，谷歌地球采用拼接方法将不同年份的数据整合到一起，因此下载的影像数据时间跨度为2016-2019年。使用机器识别方法预测出地块边界，将边界转为矢量数据，之后再将结果与谷歌影像叠加，由人工逐个检查修改错误信息，得到咸海流域耕地数据。最终结果采用WGS-1984坐标系。\n数据质量：空间分辨率为0.45m×0.45m，准确率达90.32%。\n数据应用成果：在气候变化背景下，可与气象要素和植被特征相结合分析土地退化情况；可结合植被特征与采样点分析种植结构，也可以与气象数据和统计数据结合计算水资源利用效率和粮食产量。","doi":"10.11888/Geogra.tpdc.271187","projection":"","language":"zh","share_type":"online","east":78.21,"west":53.37,"south":33.48,"north":47.12,"scale":null,"crs":null,"filesize":602.0,"share_policy":"a","ts_created":"2021-02-09T13:23:55.460050+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-19T23:12:53.223811+08:00","time_description":"2016年到2019年","datas_group":3,"time_description_en":"2016 to 2019","data_format":null,"project":[11],"specials":["f2a78cde-1c98-4241-94dc-7532eba32b80"],"cite":null,"review_status":5,"review_invite":[{"user_name":"马明国","username":"mmgswu","email":"mmg@swu.edu.cn","is_cancel_expert":false},{"user_name":"刘志锋","username":"Zhifeng.liu","email":"Zhifeng.liu@bnu.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":"1 year < x < 10 year","spatial_resolution":"<= 1 m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[6],"subtopics":{"metadata":"10006cd6-e49b-4bcf-b49c-8d7c889be81d","three_pole":null,"third_pole":"XDA20060303"},"username":"XDA20060303","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":1103}