The Global Land Project (GLP) Science Plan and Implementation Strategy represents the joint research agenda of IGBP and IHDP to improve the understanding of land system dynamics in the context of Earth System functioning. This plan is therefore a first critical step in addressing the interaction between people and their environments. It is part of the broader efforts to understand how these interactions have affected, and may yet affect, the sustainability of the terrestrial biosphere, and the two-way interactions and feedbacks between different land systems within the Earth System. GLP will play a clear role in improving the understanding of regional and global-scale land systems, as well as promoting strong scientific synergy across the global change programmes. This Science Plan and Implementation Strategy develops a new integrated paradigm focused on two main conceptual aspects of the coupled system: firstly, it deals with the interface between people, biota, and natural resources of terrestrial systems, and secondly, it combines detailed regional studies with a global, comparative perspective. GLP takes as its points of departure ecosystem services and human decision making for the terrestrial environment. These topics are at the interface of the societal and the environmental domains, and serve as conceptual lenses …