{"id":"583101ff-607e-4865-a9be-ec9f2b21354e","title":"青藏高原Landsat系列卫星遥感归一化差值植被指数（NDVI）产品（1980s-2019）","title_en":"Landsat normalized difference vegetation index (NDVI) products over the Tibetan Plateau (1980s-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":"文件命名：NDVI是以景为单位存放文件夹，由NDVI产品、质量文件（Quality Assessment, QA）、元数据、缩略图组成，文件夹的命名规则为：卫星-传感器-path-row-成像日期-LSR-BRDF-NDVI，如L5-TM-115-026-19840418-LSR-BRDF-NDVI；其中NDVI产品是以GeoTIFF格式存储的，命名规则为：卫星-传感器-path-row-成像日期-LSR-BRDF-NDVI.TIF，如L5-TM-115-026-19840418-LSR-BRDF-NDVI.TIF。数据使用方法：NDVI结果可使用Arcgis、ENVI、QGIS等软件打开，为了降低存储空间，NDVI结果由原本的0~1范围内的浮点型均乘以10000变成16位整型，所以使用时需要将结果乘以0.0001，背景填充值为-9999，并进行了“LZW”的无损压缩。","description":"1）数据内容：本数据集包含从1980s-2019年青藏高原地区Landsat长时序NDVI。2）数据来源及加工方法：主要是在青藏高原Landsat系列卫星地表反射率数据集的基础上，通过NDVI的计算公式进行生产的，即通过计算近红外波段和红波段之间的差异来定量化植被的生长状况，具体公式为：（近红外波段-红波段）/(近红外波段+红波段)；3）数据质量描述：为了标识云、冰雪，并相应生产了质量标识文件（QA）。4) 数据应用成果及前景：该指数可反映植被的健康情况及植被的长势，由于计算简单，指示性好，被广泛应用于农业、林业、生态环境等领域，同时也是生态物理参数反演的重要输入参数，是目前应用最为广泛的植被指数之一。","doi":"10.11888/Ecolo.tpdc.271725","projection":"UTM","language":"zh","share_type":"protected","east":106.7,"west":73.4,"south":24.6,"north":40.4,"scale":null,"crs":null,"filesize":5672796.16,"share_policy":"a","ts_created":"2021-06-21T16:21:24.092231+08:00","doi_type":"拥有自主知识产权","ts_updated":"2022-02-14T17:00:21.099920+08:00","time_description":"1980s-2019","datas_group":0,"time_description_en":"1980s-2019","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"冯敏","username":"mfeng","email":"mfeng@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":"Monthly","spatial_resolution":"10m - 100m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[21],"subtopics":{"metadata":"583101ff-607e-4865-a9be-ec9f2b21354e","three_pole":null,"third_pole":"2019QZKK0300"},"username":"孔令桥","review_time":null,"protected_duration":24,"protected_describe":null,"is_important":false,"hit_count":210}