{"id":"1dc07d7b-b781-49f5-ab4a-c2079f415e1e","title":"黑河综合遥感联合试验：阿柔加密观测区Landsat TM地面同步观测数据集（2008年7月22日）","title_en":"WATER: Dataset of ground truth measurements synchronizing with Landsat TM in the A'rou foci experimental area on Jul. 22, 2008","serial":"黑河综合遥感联合试验","user_limit":"本数据由“黑河综合遥感联合试验”产生，用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。","instructions":null,"description":"2008年7月22日，针对7月23日的LandSat TM数据，在阿柔加密观测区开展了狼毒和棘豆盖度的加密调查，主要通过照相法观测狼毒覆盖度，并开展样方调查工作。本数据可为TM卫星数据反演毒草覆盖度提供基本的地面验证数据集。\n1. 照相法观测狼毒覆盖度。样方规格：51m×51m，针对不同的覆盖度共计调查了10个样方，每个大样方分为17×17个3m×3m的格子。在格子角上采用普通相机拍照，每个样方拍摄324张。照相：使用的相机为尼康D80，标配18-135mm镜头，照相高度为1.5米，正对地面向下照。\n2. 样方调查数据存储：Excel格式表格。主要调查的项目有：GPS点号、物种、株数、高度、覆盖度、生物量。（1）GPS点号用GARMIN GPS 76记录。（2）物种采用人工识别的方法。（3）株数采用人工数的方法。（4）高度用卷尺测量，4－5个重复。（5）覆盖度采用人工估计的方法。在0.5m×0.5m的大格子内细分为100个小格，数其中狼毒所占格数。（6）生物量取0.5m×0.5m样品，称鲜重，杀青后烘干，称干重。\n该数据集包括：同步TM影像文件夹，样方覆盖度调查照片文件夹，GPS记录点文件、覆盖度文件，样方调查表文件（包括株高和物种方格数）。","doi":"10.3972/water973.0013.db","projection":"4326","language":"zh","share_type":"online","east":100.55,"west":100.411,"south":38.015,"north":38.078,"scale":null,"crs":null,"filesize":2999.2,"share_policy":"a","ts_created":"2013-10-15T20:25:48+08:00","doi_type":null,"ts_updated":"2021-04-19T10:10:34.553016+08:00","time_description":null,"datas_group":3,"time_description_en":null,"data_format":"","project":[10,11,15],"specials":["2ee7e876-6f20-43a7-9c6c-979840a33ef2","70b8f038-a99f-4be4-a349-f82de21a2b6b","6740cd00-6d20-4855-a39b-863af216b0a2","4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":"马明国, 曹永攀, 李红星, 刘超, 钱金波, 冉有华. 黑河综合遥感联合试验：阿柔加密观测区Landsat TM地面同步观测数据集（2008年7月22日）. 中国科学院寒区旱区环境与工程研究所. 2008. doi:10.3972/water973.0013.db [Ma Mingguo, Cao Yongpan, Li Hongxing, Liu Chao, Qian Jinbo, Ran Youhua. WATER: Dataset of ground truth measurements synchronizing with Landsat TM in the A'rou foci experimental area on Jul. 22, 2008. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Science. 2008. doi:10.3972/water973.0013.db]","review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":null,"spatial_resolution":null,"license":null,"fund":[35,36],"subtopics":{"metadata":"1dc07d7b-b781-49f5-ab4a-c2079f415e1e","three_pole":null,"third_pole":null},"username":"盖春梅","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":11938}