{"id":"77176712-f248-4ec0-a15c-a6efc9aa0448","title":"青藏高原农牧区草地退化500m网格数据集（2015）","title_en":"500 m grid data of grassland degradation assessment in agricultural and pastoral areas of the Qinghai-Tibet Plateau in 2015","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TIFF格式存储，文件的名称为“grassdegrad”。数据可使用ArcGIS, QGIS, ENVI, and ERDAS等软件打开。","description":"青藏高原农牧区草地退化评价数据集是在500m全球土地退化态势分布数据（2015）基础上，根据草地退化或改善程度进行评价得到的数据集。在该数据集中，将青藏高原的草地退化态势分为了两级评价系统。第1级，将草地退化程度评价分为3种类型，分别是无变化类型、改善类型和退化类型；第2级，将青藏高原草地退化程度分为9种类型，其中无变化类型为1类，用0表示；改善类型包括四种类型，分别为轻微改善（3）、较明显改善（6）、明显改善（9）和极明显改善（12）；退化类型包括四类，分别是轻微退化（-3）、较明显退化（-6）、明显退化（-9）和极明显退化（-12）。该数据集覆盖青藏高原的所有草地区域，空间分辨率为500m，时间为2015年。投影坐标系为D_WGS_1984。数据集存储为TIFF格式，命名为“grassdegrad”，数据量为94.76 MB。数据以压缩文件形式保存，文件大小为 2.54 MB，文件命名为“2015年青藏高原农牧区草地退化30m网格数据集”。数据可使用ArcGIS, QGIS, ENVI, and ERDAS等软件打开，可为青藏高原农牧区草地生态系统管理和恢复提供参考。","doi":"","projection":"WGS84","language":"zh","share_type":"offline","east":103.67,"west":73.45,"south":25.99,"north":39.83,"scale":null,"crs":null,"filesize":94.76,"share_policy":"c","ts_created":"2021-01-12T09:56:36.318461+08:00","doi_type":"国际公开共享数据","ts_updated":"2021-04-19T10:22:21.143568+08:00","time_description":"2015","datas_group":0,"time_description_en":"2015","data_format":null,"project":[11],"specials":["b6500306-f60b-4aa1-b0b6-0324d94866df","b6500306-f60b-4aa1-b0b6-0324d94866df"],"cite":null,"review_status":5,"review_invite":[{"user_name":"张扬建","username":"naqu3228","email":"zhangyj@igsnrr.ac.cn","is_cancel_expert":true}],"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 4.0 International (CC BY 4.0)","fund":[21],"subtopics":{"metadata":"77176712-f248-4ec0-a15c-a6efc9aa0448","three_pole":null,"third_pole":null},"username":"刘焱序","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":2373}