van Noordwijk, M., P. Martikainen, P. Bottner, E. Cuevas, C. Rouland & S.S. Dhillion (1998):
Global change and root function. Global Change Biology 4(7): 759-772.
Description
A number of possible mechanisms for root-mediated N mineralization is discussed in the light of climate change factors. Rhizovory (root consumption) may increase under global change as the balance between plant chemical defense and adapted root- consuming organisms may be modified during biome shifts in response to climate change. Root-mediated gas exchange allows oxygen to penetrate into soils and methane (CH4) to escape from wetland soils of tundra ecosystems as well as tropical rice production systems. The effect on net greenhouse gas emissions of biome shifts (fens replacing bogs) as well as of agricultural land management will depend partly on aerenchyma in roots.
Case study for Climate Change / Wetlands in cold ecoregions:
| Parameter group | Indicator |
|---|---|
| Abiotic incidators | N-/C-flux, greenhouse gases emission |
| Primary production: plants | Growth rate, productivity, root density, decomposition change |
