Ecosystem structure and its dynamic response to human-induced climate and land use changes are complex by themselves and further complicated by the feedback mechanisms that interrelate soil processes, canopy dynamics, and climate. The scientific community needs to gain a fundamental understanding of these interactions and processes to avoid a loss of biodiversity and irreversible shifts in vegetation. In particular, the soil profile itself plays a vital role in moderating energy and mass fluxes; partitioning energy into ground conduction, latent (evaporative), and sensible heat fluxes; and providing the medium into which roots grow and nutrients and water are stored and transported....

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