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(WORK IN PROGRESS. Estimated Completion in Spring 2014)
Please look at the BioLUC model's above for basic directions for using BioLUC.
Please use documents and trainings available from ISEE Systems systems for guidance in using the Stella software.
Please use the Excel spreadsheet called BioLUC Data Processing and Model Inputs_2013-10-01.xlsx for detailed questions about data.
AP commodity consn
AP food consn
AP net export
AP production
Abandoned
Abandoned Land
Actual Forage Land
Animal Product Inventory
Avg AP Prodn Shortfall
Avg Commodity Prod''n Shortfall
Built Up
Built Up Land
Commodity Inventory
Crop
Crop Land
Crop Land Alloc to Energy Crops
Crop Land Alloc to Fallow
Crop Land Alloc to Fiber
Crop Land Alloc to Other
Crop Land Alloc to VFN
Latent
Latent Land
NPL
Near Pristine Land
Other yield
Population
Set Aside
Set Aside Land
TOTAL desired AP exports
TOTAL desired AP imports
TOTAL desired CP exports
TOTAL desired CP imports
Total AP Prodn Shortfall
VFN yield
animal product demand
commodity crop demand
commodity crop yield
commodity production
crop land forage yield
direct commodity consn
fiber yield
net commodity export
per capita animal product demand
per capita commodity crop demand
potential exports
potential imports
total crop land allocated to all other uses
total crop land allocated to commodities
This section summarizes some limitations and issues with the BioLUC model and the data that is used that users of BioLUC should be aware of. The list included here should not be considered a complete list.
It is possible using STELLA 10.0.3 to lose control over the mouse when opening the BioLUC model. This can occur under conditions such as the following a) you have multiple monitors b) program such as the windows task manager is open in one monitor b) you launch the model by double-clicking it.
This is a known problem with STELLA, and is scheduled to be fixed in a version subsequent to 10.0.3. This problem does not occur if you first launch STELLA and then open the BioLUC model from the File menu.
Miscellaneous crop commodities for industry, seed, etc. comes from static disposition data from FAOSTAT. In the model, changes in population on not linked to these relatively smaller uses of crop commodities.
The "latent to set aside" and "pristine to set aside" flows are set to zero. These flows are intentionally turned off in the default settings of the BioLUC model. Users are meant to override this for scenarios in which policy protects ("set-asides) land that are protected and would not be used for agriculture.
Please see data documentation for definitions of land categories, if needed.
So called "built up" land data does not well match actual land that has been built up for human use. The "built up" land category is generated from the FAOSTAT's Land Resource data's "Other" land category. We were able to remove "abandoned" land from that category, but we could not separate out barren land such as tundra and deserts. Therefore, our "built up" land category does not include only built up land. Inflows of land into the "built up" land category are either based assuming that historic growth is mostly from the building up of land for human uses or that growth should be mirror to similar regions. These two methods were applied in cases of historic growth or decline in the "built up" land category, respectively.
Please see data documentation for additional details about this issue.
Some regions have zero yields for some commodities. BioLUC does not include explicit economic or climate components and dynamics so the zero yields are how BioLUC manages commodities that should not be grown.
The BioLUC model prioritizes land for biofuels over other commodities and generally prioritizes commodity use for food over the use for feed
Because BioLUC is not an economic model the former assumption was implemented so that multiple alternative biofuel scenarios could be run in BioLUC. In essence, the requirement of land for biofuel can be thought of a a policy induced event that can't be circumnavigated.
Running BioLUC multiple times (~5) will eventually cause it to crash. This issue will be fixed in Stella 10.0.4 which should be available sometime in October/November. We will be converting the model to that version when it is released. In the meantime save often.
(please submit questions to [email protected] or create a ticket