- Introducing cropping into uncleared land or pasture in good condition decreased soil carbon.
- There was thus potential to sequester carbon in soils if cropping lands were converted to pasture or forest.
- Conservation tillage practices might retain up to 25% more carbon in soils than conventional tillage.
- Removing grazing pressure would in theory be expected to improve below-ground carbon stocks. However, under low disturbance regimes, grasses may become moribund, producing less root biomass.
This is only one research out of many researches that focus on this important issue, but it definitely gives some interesting input to think about when coming to plan how to fight global warming most effectively.
In any case, we have to remember that the value of tree planting operations, such as the the UNEP planting campaign, which as we reported set a goal of having 7 billion trees planted by the end of 2009, is not just because of carbon sequestering. Trees are one of the most important natural resources we have and have many other significant benefits, such as decreasing the chances for natural disasters such as floods, protection of important water resources, reduction of soil erosion, etc.
Raz @ Eco-Libris
Eco-Libris: plant a tree for every book you read!
Picture Courtesy of Sustainable Harvest international