{"id":"b3980dc0-5b82-43c4-b268-8924c29e33ca","title":"黑河流域祁连山天老池流域雷达反演参数数据集（2013）","title_en":"The parameters data of radar inversion in Tianlaochi Catchment in Qilian Mountain (2013)","serial":"黑河计划","user_limit":"本数据由“黑河流域上游森林草地生态系统生态-水文过程的相互作用机制研究”项目产生，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":"叶面积指数(LAI)作为植被冠层的结构参数，是很多关于能量、生物量等反演模型的重要输入参数。首先在Terrasolid软件中分离植被点和地面点。然后计算激光点的透过率，透过率为地面点占所有点的比例。\n激光脉冲打到冠层上后，有部分能量穿过枝叶间的孔隙继续前进，直到能量被遮挡，因此最后会有部分激光点到达地面，本研究用穿过孔隙到达地面的能量与冠层能量的比值作为激光穿透指数(Laser Penetration Index, LPI)。计算研究区各尺度下每个样点的 LPI。","doi":"10.3972/heihe.046.2014.db","projection":null,"language":"zh","share_type":"offline","east":99.98,"west":99.73,"south":38.5,"north":38.33,"scale":null,"crs":null,"filesize":49.0,"share_policy":"c","ts_created":"2014-01-25T18:40:52+08:00","doi_type":null,"ts_updated":"2021-04-19T04:42:40.675093+08:00","time_description":"","datas_group":0,"time_description_en":null,"data_format":"TIF","project":[10,11,15],"specials":["4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":"赵传燕,马文瑛,彭守璋等.黑河流域祁连山天老池流域雷达反演参数数据,黑河计划数据管理中心,2014.doi:10.3972/heihe.046.2014.db","review_status":5,"review_invite":[],"review_editor":null,"data_sources":"","temporal_resolution":null,"spatial_resolution":null,"license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[91],"subtopics":{"metadata":"b3980dc0-5b82-43c4-b268-8924c29e33ca","three_pole":null,"third_pole":null},"username":"盖春梅","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":8936}