Models and Tools
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WaNuLCAS • Water, Nutrient and Light Capture in Agroforestry Systems
WaNuLCAS was developed to represent tree-soil-crop interactions in a wide
range of agroforestry systems where trees and crops overlap in space and/or
time. The model can be used for exploring positive and negative interactions for
different combinations of trees, crops, soil, climate and management by the
GenRiver • Generic river flow model
GenRiver is a generic model of river flow in response to spatially explicit
rainfall and a plot-level water balance that responds to changes in vegetation
The SpatRain model was constructed to generate time series of rainfall that
are fully compatible with existing station-level records of daily rainfall, but
yet can represent substantially different degrees of spatial correlation. The
model can derive daily amounts of rainfall for a grid of observation points by
considering the possibility of multiple storm events per day, but not exceeding
the long-term maximum of observed station level rainfall. Options exist for
including elevational effects on rainfall amount.
SExI-FS • Spatially Explicit Individual-Based Forest Simulator
The SExI Forest Simulator focuses on tree-tree interactions in a mixed
multi-species agroforest, using an object-oriented approach where each tree is
represented by an instance of a generic class of tree. The simulated object
trees, mimicking real trees, interact through modifying their neighbors’
environment. These modifications are mediated through two major resources: space
and light. A 3D representation of a one-hectare plot of forest serves as the
grounds for the simulation of this competition.
FALLOW • Forest, Agroforest, Low-value Landscape Or Wasteland?
FALLOW is a landscape-dynamics model, that can be used for impact assessment
and scenario studies, assisting the negotiation process between stakeholders in
a changing landscape by visualizing possible/likely consequences of factors such
as changes in commodity prices, population density and human migration,
availability of new technology, spatial zoning of land use, pest and disease
pressure or climate.