Map showing the geographical distribution of detailed terrestrial NPP study sites.

<p>The dataset are obtained from the Oak Ridge National Laboratory (ORNL), Distributed Active Archive Center database. • = grassland sites included in the present analysis; ▴ = NPP study sites forests (tropical forest, temperate forest and boreal forest), ★ and + = multi biomes – EDMI (B and C) data <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0080394#pone.0080394-Reich1" target="_blank">[63]</a>. These data, and further information about the study sites, are publicly available at <a href="http://www.daac.ornl.gov/NPP/" target="_blank">www.daac.ornl.gov/NPP/</a>.