A peatland productivity and decomposition parameter database

Area of Science:

• Ecology
• Environmental Science
• Biogeochemistry

Background:

• National-scale greenhouse gas emission estimates from Canadian peatlands are needed.
• Existing models require accurate productivity and decomposition parameters.
• Peatlands play a significant role in Canada's carbon cycle.

Purpose of the Study:

• To compile a database of peatland productivity and decomposition parameters.
• To support the Canadian Model for Peatlands (CaMP) for greenhouse gas estimation.
• To provide a valuable resource for peatland scientists and ecosystem modelers.

Main Methods:

• Data compiled from 186 peatland sites across 69 sources.
• Included data on net primary productivity (NPP) for various vegetation types (all, shrubs, moss, herbs, sedges).
• Collected standing aboveground biomass data for trees, shrubs, herbs, and sedges.
• Compiled decomposition parameters for different litter types, including decay rates and mass loss over time.
• Organized data into tables: SITES, NPP (ALL, SHRUB, MOSS, HERB SEDGE), BIOMASS (TREE, SHRUB, HERB SEDGE, MOSS), DECAY LITTER, and REFERENCES.

Main Results:

• A database with detailed information on peatland site characteristics, productivity, biomass, and decomposition rates was established.
• The database includes specific parameters for vegetation types and litter, crucial for modeling.
• Includes data on water table depth and its influence on decomposition.
• Provides links to source references for data validation and further research.

Conclusions:

• The compiled database is vital for the national Canadian peatland modeling effort.
• This dataset will enhance the accuracy of greenhouse gas emission estimates from Canadian peatlands.
• The database serves as a valuable resource for peatland scientists and ecosystem modelers globally.