{"id":"628b3fc0-3396-4cc2-ba26-a4b4c17fdc5c","title":"黑河生态水文遥感试验：黑河下游Li-8100观测土壤呼吸数据集（2014年7月-8月）","title_en":"HiWATER: Dataset of Soil respiration observed by Li-8100 in the lower of Heihe River Basin from Jul to Aug , 2014","serial":"HiWATER","user_limit":"本数据由“黑河生态水文遥感试验（HiWATER）”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":"","description":"下游航空遥感试验期间，开展了下游典型植被地表土壤呼吸观测，观测自2014年7月23日开始，8月2日结束。\n1、\t观测时间\n2014年7月23日至8月2日每天观测一次，其中7月25日中断一天\n2、\t样方选择及观测方式\n结合下游植被特征和站点分布，选择临近于站点、面积分布大于100 m100 m且均一的植被作为观测样地，共选取了5个观测样地，包括胡杨柽柳混合林、胡杨林、柽柳群、裸地和瓜地样地；在每一样地中，选取具有代表性的3-5个点，提前一天打入土壤环(内径为19.5cm，外径为20.0cm，高12cm，尽量保持打入后的PVC露出地面5cm左右)，尽可能不扰动地表的植被和凋谢物。经过24h平衡，土壤呼吸速率恢复到原来状态，避免了由于基座的安置而造成的对土壤呼吸速率的波动。\n观测时间段为每天上午的8：00至12：00（这段时间土壤呼吸比较稳定，能够代表整天的土壤呼吸速率），运用LI-8100开路式土壤碳通量自动测定仪（Model 8100-103）分别对每个样地内样点测量一次，每天完成5块样地的一次循环观测，每块样地取所观测样点的平均值作为该样地的土壤呼吸值。\n3、\t观测仪器\n中科院地环所Li-8100（Li-COR，USA）开路式土壤碳通量自动测定仪\n4、\t数据存储\n本数据集包括Li-8100导出的*.81x格式的数据（用Li-8100配套软件打开，也可以用txt打开）、Excel格式观测记录表以及实验照片。","doi":"10.3972/hiwater.267.2015.db","projection":"4326","language":"zh","share_type":"offline","east":101.55,"west":101.05,"south":41.95,"north":42.05,"scale":null,"crs":null,"filesize":7.42,"share_policy":"b","ts_created":"2015-06-15T16:07:44+08:00","doi_type":null,"ts_updated":"2021-04-19T15:01:41.082854+08:00","time_description":"","datas_group":0,"time_description_en":null,"data_format":"文本","project":[10,11,15],"specials":["ee3dfdf5-2e9f-4b61-a301-4fb49e30e3c2","6f45f287-f49c-49aa-a5b7-e88e4132b9a8","8ece9045-32dc-49df-a50a-53afad3c4162","4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":"任志国, 马明国, 宋怡, 耿丽英. 黑河生态水文遥感试验：黑河下游Li-8100观测土壤呼吸数据集. 中国科学院寒区旱区环境与工程研究所. 2015. 10.3972/hiwater.267.2015.db [Ren Zhiguo, Ma Mingguo, Song Yi, Geng Liying. HiWATER：Dataset of Soil respiration observed by Li-8100 in the lower reaches of the Heihe River Basin. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences. 2015. 10.3972/hiwater.267.2015.db]","review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":null,"spatial_resolution":null,"license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[43],"subtopics":{"metadata":"628b3fc0-3396-4cc2-ba26-a4b4c17fdc5c","three_pole":null,"third_pole":null},"username":"胡晓利","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":8653}