Abstract

Abstract Soils of the wet tropics represent one of the planet's greatest natural resources, serving as a substrate for some of the most productive ecosystems in the world, and as the largest terrestrial reservoir for organic carbon (C). Global change is having large effects on key soil characteristics in wet tropical forests, including shifts in C storage and nutrient availability, the extent of which we are just beginning to understand. Deforestation, land abandonment, climate change, atmospheric carbon dioxide (CO2) fertilization, and nitrogen (N) deposition are simultaneously altering soil processes in the tropics, with responses varying according to soil properties, nutrient status, and disturbance and land use history. A major challenge for managers is to sustain - and where needed - restore wet tropical forest soil function, while developing strategies and methods for adapting to global change.

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