The incidence of forest fire is likely to increase in a warmer, drier world.
Without carbon dioxide uptake by trees, its concentration in the atmosphere would be rising nearly twice as fast as we observe today.
Recent press coverage of soil carbon sequestration on farms creates the dangerous impression that we can easily store a significant fraction of CO2 from fossil fuel emissions through better soil management.
[We need] a report card that grades plant production, soil organic matter, biodiversity and nutrient balance against our best measures of what they would be in a world without humans.
Policies devoted to bioenergy should be redirected toward efforts to protect terrestrial carbon stocks and recarbonize the biosphere.
Flooding can convert soils from a methane sink to a methane source to the atmosphere
No matter how much carbon they assimilate, the carbon uptake by an existing mature forest is not additional,
production of wood pellets for fuel is likely to put more CO2 in the atmosphere and maintain less biodiversity on the land during the next several decades.
If we are to store carbon in soils, better management of agricultural lands might be one avenue to pursue.
Enhancement of natural carbon sinks would allow a more orderly withdrawal of fossil fuels from our economy during the next several decades.