climatefarmers / soil-modelling

Modelling of Carbon in Soil
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Characterisation of Agroforestry #14

Open Clare2D opened 3 years ago

Clare2D commented 3 years ago

(from Slack) Great paper about how to model Agroforestry in RothC. https://dspace.lib.cranfield.ac.uk/bitstream/handle/1826/12769/Integrating_belowground_car[…]ynamics_into_Yield-SAFE-2017.pdf?sequence=4&isAllowed=y Carbon Sources from Trees:

Applied methodology: Estimate tree leaf fall from tree type, leaf dimension, fall rates. Carbon content is ~ 0.5 of leaf mass Use a root-to-shoot ratio (generally 0.2 for conifers, 0.25 for broadlead) to calculate the carbon from roots into the soil

This doesn't consider how the decomposition rates of leaf matter differ from the RothC standards (we could however incorporate this as per fym?)

Limitations: Similarly this doesn't consider the effects of this on erosion. Also "the grass strip around the treeline seems to be of high relevance for carbon storage especially in the earlier stages of agroforestry systems' establishment" however this leads to underestimation of the carbon storage.

To Do Characterise this as an input into the model eg. what data do we require from the farmer, what assumptions do we make (ie is this replacing otherwise farmed land or not), what is the overall effect on carbon in Create input format to add this into the model (events list?)

Clare2D commented 2 years ago

@CarmenVM perhaps of interest. Seems we did have a look at this at some point!