Effects of climate variability and disturbances on the Amazonian terrestrial ecosystems dynamics

摘要: [1] This article examines how climate variability and ecological disturbances affect ecosystem composition functioning in the Amazon region. We use a terrestrial model, IBIS, vary treatment of (using either long-term average climate, or actual historical variations climate) (with uniform disturbance rates applied through region). Interannual frequent both favor grasses over trees, causing large increases geographic extent savanna south east A more constant less trees grasses, forest to dominate most study area. While have major impact on structure, we find that compensating processes between herbaceous woody plants damp simulated response carbon water fluxes. Nevertheless, cumulative these changes vegetation structure results significant soil stocks (up 36%).