NASA BigFoot Project

The BigFoot project gathered field data for selected EOS Land Validation Sites in North America from 1999 to 2003. Data collected and derived for varying intervals at the BigFoot sites and archived with this data set include FPAR, nitrogen content, allometry equations, root biomass, LAI, tree biomass, soil respiration, NPP, landcover images, and vegetation inventories.Each site is representative of one or two distinct biomes, including the Arctic tundra; boreal evergreen needleleaf forest; temperate cropland, grassland, and deciduous broadleaf forest; desert grassland and shrubland. The project co...BigFoot项目于1999年至2003年间，针对北美地区选定的地球观测系统（Earth Observing System, EOS）土地验证站点采集实地数据。随本数据集一并归档的、在BigFoot站点以不同时间间隔采集及衍生得到的数据涵盖：光合有效辐射吸收比（Fraction of Photosynthetically Active Radiation, FPAR）、氮含量、异速生长方程、根系生物量、叶面积指数（Leaf Area Index, LAI）、树木生物量、土壤呼吸、净初级生产力（Net Primary Productivity, NPP）、土地覆盖影像及植被清查数据。各站点对应1至2种独特的生物群系，涵盖北极苔原、北方常绿针叶林、温带农田、温带草原、温带落叶阔叶林、荒漠草原与灌丛。本项目……