{"id":"6889803c-bb2c-4338-9e2e-7e7761e3c6ff","title":"黑河生态水文遥感试验：黑河流域中游土壤呼吸观测数据集","title_en":"HiWATER: Dataset of soil respiration observed in the middle reaches of the Heihe River Basin","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":"本数据集为利用开路式土壤碳通量测量系统LI-8100(LI-COR，Lincoln，NE，USA)在大满超级站定点测量的土壤呼吸速率。\n1）\t测量目的\n    土壤呼吸速率测量的目的在于：利用LI－8100测定土壤呼吸日变化特征，为评估干旱区农田生态系统碳循环和碳平衡提供科学依据与参数。\n2）\t测量仪器与方式\n    测量仪器：开路式土壤碳通量测量系统LI-8100(LI-COR，Lincoln，NE，USA)。\n    测量方式：土壤呼吸室放置在PVC圈(直径10 cm，高度5 cm)上，PVC圈插入土壤1～2 cm，在测定的前1 d安置。采用全自动观测，利用太阳能板进行供电，采用仪器自带数据采集仪，自动记录观测数据。 \n3）\t测量时间\n    土壤呼吸速率主要在玉米的主要生长季进行持续观测，具体时间为2012年6月19日一9月15日。\n4）\t数据处理\n    定期从数据采集仪上拷贝出观测数据（*.81x），通过LI-8100(M) PC Client v2.0.0软件预处理转换为文本格式文件，得到土壤呼吸数据。","doi":"10.3972/hiwater.126.2013.db","projection":"4326","language":"zh","share_type":"offline","east":100.7,"west":100.35,"south":38.77,"north":38.95,"scale":null,"crs":null,"filesize":108.0,"share_policy":"b","ts_created":"2017-08-27T15:33:24+08:00","doi_type":null,"ts_updated":"2021-04-19T15:00:52.371657+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":null,"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":[43,47],"subtopics":{"metadata":"6889803c-bb2c-4338-9e2e-7e7761e3c6ff","three_pole":null,"third_pole":null},"username":"胡晓利","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":12264}