Models and Tools

Download the models

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 farmer.

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 and soil.

SpatRain

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.