G-LiHT Campaign Leaf Carbon and Nitrogen Content, Mar2017: Puerto Rico

Measurements of leaf carbon and nitrogen content collected from 68 tropical tree species. Data includes leaves collected from fully sunlit and shaded canopy strata as well as leaves for young, mature, old and senescent leaf ages. Data for each sample includes the relative age estimate, leaf canopy position and sample number. This data was collected as part of the 2017 NGEE-Tropics / NASA G-LiHT airborne campaign. This data package includes processed data for leaf carbon and nitrogen content (*.csv). Metadata files include data description (_dd.csv) for tabular data, site information (*.csv), sampling protocol (*.pdf) and the NGEE-Tropics FRAMES e-field log and file submission metadata (*.xlsx). See related datasets for sample details including photographs, leaf-level reflectance and transmittance spectra, leaf mass per area (LMA) and water content. This dataset was originally published on the NGEE Tropics Archive and is being mirrored on ESS-DIVE for long-term archival Acknowledgement: This research was supported as part of NGEE-Tropics, funded by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research under contract no. DE-SC0012704.本数据集收录了68种热带树木的叶片碳、氮含量测量数据。所采集的叶片样本涵盖完全受光与遮阴的冠层层级，同时覆盖幼龄、成熟、衰老及凋落前的不同叶龄阶段。每份样本包含相对叶龄估算值、冠层位置及样本编号三项信息。该数据采集自2017年NGEE-Tropics / NASA G-LiHT航空科考任务。本数据包包含已预处理的叶片碳、氮含量数据，文件格式为*.csv。配套元数据文件包括：表格数据的数据描述文档（_dd.csv）、样地信息文件（*.csv）、采样方案文档（*.pdf），以及NGEE-Tropics FRAMES电子现场日志与文件提交元数据文件（*.xlsx）。相关数据集提供样本的详细信息，包括叶片照片、叶片级反射与透射光谱、比叶面积（Leaf Mass per Area, LMA）以及叶片含水量。本数据集最初发布于NGEE-Tropics档案库，现由ESS-DIVE镜像存储以实现长期归档。致谢：本研究作为NGEE-Tropics项目的一部分得到资助，资助方为美国能源部科学办公室生物与环境研究办公室，合同编号为DE-SC0012704。