【土壤养分循环与干旱】Manuel Delgado-Baquerizo Fernando T. Maestre Antonio Gallardo et al. Decoupling of soil nutrient cycles as a function of aridity in global drylands. Nature 502 672–676 (31 October 2013) doi:10.1038-nature12670
Abstract
The biogeochemical cycles of carbon (C) nitrogen (N) and phosphorus (P) are interlinked by primary production respiration and decomposition in terrestrial ecosystems1. It has been suggested that the C N and P cycles could become uncoupled under rapid climate change because of the different degrees of control exerted on the supply of these elements by biological and geochemical processes1 2 3 4 5. Climatic controls on biogeochemical cycles are particularly relevant in arid semi-arid and dry sub-humid ecosystems (drylands) because their biological activity is mainly driven by water availability6 7 8. The increase in aridity predicted for the twenty-first century in many drylands worldwide
