{"id":"94186a89-c549-4e67-8649-e288bedce6a3","title":"金佛山国家站森林样地调查数据（2020）","title_en":"Forest sample plot survey data of Jinfoshan National Station (2020)","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：\"Bxx样方.xlsx\"，其中xx代表样方编号。比如B01样方.xlsx代表B01样方的生物量调查数据。","description":"样地内林木起测胸径拟采用5cm，称为样木，不观测胸径小于5cm的小树，需要记录小树的株数。\n树种识别：基于调查人员的树木学知识结合林场造林资料识别树种。\n胸径测量：采用胸径尺，观测1.3m高度处的样木胸径，若被测单木位于山坡上，调查人员应站在上坡位置进行测量。\n树高测量：采用激光测高计，测量样木根部到样地顶部之间的垂直距离。\n枝下高测量：利用激光测高仪进行单木枝下高的测量。\n生物量计算：样地生物量是每个样地单木生物量加和，单位kg，生物量计算公式参见生物量计算行业标准文件夹下的行业标准文件和相关论文。\n平均数高：样地平均树高为所有单木的树高平均值。","doi":"","projection":"","language":"zh","share_type":"offline","east":106.45,"west":106.32,"south":29.76,"north":29.79,"scale":null,"crs":null,"filesize":0.87,"share_policy":"c","ts_created":"2022-09-28T21:31:06.443280+08:00","doi_type":"拥有自主知识产权","ts_updated":"2022-10-17T19:32:07.260894+08:00","time_description":"","datas_group":0,"time_description_en":"","data_format":null,"project":[10],"specials":["5f218875-5eed-4939-8208-7bf54c573e42"],"cite":null,"review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":"Daily","spatial_resolution":"<= 1 m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"94186a89-c549-4e67-8649-e288bedce6a3","three_pole":null,"third_pole":null},"username":"李丹丹","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":349}