Influence of climate change,fire and harvest on the carbon dynamics of black spruce in Central Canada |
| |
| Authors: | Oleg Chertov Jagtar S Bhatti Alexander Komarov Alexey Mikhailov Sergey Bykhovets |
| |
| Institution: | 1. Bingen University of Applied Sciences, Berlin Str. 109, 55411 Bingen am Rhein, Germany;2. Canadian Forest Service, Northern Forestry Centre, 5320 122 Street, Edmonton, Alberta T6H 3S5, Canada;3. Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Russia |
| |
| Abstract: | The results of EFIMOD simulations for black spruce (Picea mariana Miller]) forests in Central Canada show that climate warming, fire, harvesting and insects significantly influence net primary productivity (NPP), soil respiration (Rs), net ecosystem production (NEP) and pools of tree biomass and soil organic matter (SOM). The effects of six climate change scenarios demonstrated similar increasing trends of NPP and stand productivity. The disturbances led to a strong decrease in NPP, stand productivity, soil organic matter (SOM) and nitrogen (N) pools with an increase in CO2 emission to the atmosphere. However the accumulated NEP for 150 years under harvest and fire fluctuated around zero. It becames negative only at a more frequent disturbance regime with four forest fires during the period of simulation. The results from this study show that changes in climate and disturbance regimes might substantially change the NPP as well as the C and N balance, resulting in major changes in the C pools of the vegetation and soil under black spruce forests. |
| |
| Keywords: | Canadian boreal forest Black spruce Carbon balance Climate change Disturbance regime Simulation model |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
