{"id":"5c786d32-5e1c-4088-abe8-24862639fe81","title":"黑河综合遥感联合试验：大野口关滩森林站森林样带调查数据集","title_en":"WATER: Dataset of forest structure parameter survey at the forest sampling strip around the Dayekou Guantan forest station","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，其中差分GPS数据仅限于项目使用，不对外共享。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":"观测时间为2008-06-05～2008-06-15日。以大野口关滩森林站超级样地为起点，穿越超级样地，设置了一条长度为1Km，宽为20m的样带。利用罗盘仪确定样带走向，方位角为北偏东115度，与飞行航线基本一致。在样带上每隔50米布设20米×20米的样地一块，共20块样地。样带与超级样地有部分重合，样带上的1号样地中心位于超级样地的中心，其观测数据参见超级样地每木测量数据集。本数据集记录了2～20号样地的观测数据。这些数据包括以下3部分：\n1）样地测树数据：分别对2～20样地每木测量：胸径、树高、冠幅和枝下高。采用激光测高仪和超声波测高仪测量大树高、枝下高，用花杆测量小树高、枝下高，用胸径尺测量林木胸径，用皮卷尺测量冠幅。\n2）样地定位数据：利用皮尺和罗盘粗略确定样地位置，样地中心点坐标精确测量采用法国泰雷兹（THALES） DGPS测量系统，型号为Z-MAX。观测方法是使用两台GPS接收机进行同步静态测量，一台安置在参考站，一台安置在流动站，观测时长30分钟，通过系统自带的数据处理软件进行事后差分处理，定位结果的大地坐标系统为WGS84。\n3）LAI观测数据：利用LAI-2000和HemiView进行了每块样地的叶面积指数（LAI）测量。","doi":"10.3972/water973.0053.db","projection":"4326","language":"zh","share_type":"offline","east":100.260361,"west":100.250007,"south":38.530537,"north":38.533924,"scale":null,"crs":null,"filesize":259.3,"share_policy":"b","ts_created":"2012-10-07T09:31:52+08:00","doi_type":"","ts_updated":"2021-04-19T20:34:24.394762+08:00","time_description":"","datas_group":0,"time_description_en":"","data_format":"","project":[10,11,15],"specials":["1b7ac22c-43ea-410c-b729-29786f35d16f","1e67029e-f3fe-4aa1-a183-441c82f5c93d","6740cd00-6d20-4855-a39b-863af216b0a2","4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":"陈尔学, 过志峰, 刘清旺. 黑河综合遥感联合试验：大野口关滩森林站森林样带调查数据集. 中国林业科学院资源信息研究所. 2008. doi:10.3972/water973.0053.db [Chen Erxue, Guo Zhifeng, Liu Qingwang. WATER: Dataset of forest structure parameter survey at the forest sampling strip around the Dayekou Guantan forest station. Institute of Forest Resource Information Techniques, Chinese Academy of Forestry. 2008. doi:10.3972/water973.0053.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":[35,36],"subtopics":{"metadata":"5c786d32-5e1c-4088-abe8-24862639fe81","three_pole":null,"third_pole":null},"username":"盖春梅","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":10932}