Our outputs

FlowPer: Flow Persistence Model

Models of river flow, even relatively simple ones such as GenRiver, are over-parameterized relative to the information that we can use to check the statistical validity of the model.

GenRiver: Generic River Model on River Flow

Concerns over negative environmental effects of forest conversion are often expressed in relation to hydrological impacts. Patterns of river flow are widely perceived to change upon change in land cover from closed forest cover to an agriculturally used landscape.

REDD Abacus Service Pack

REDD Abacus SP is a public domain software developed by the World Agroforestry Centre (ICRAF) to:Estimate emission from land use and land cover changes allowing for dynamic heterogeneity of soil types, elevations, climate and other biophysical characteristics in the landscapes,

The SpatRain model

Conceptual Framework:Variations in river flow tend to decrease with increasing area of consideration, partly due to a decrease in temporal correlation of rainfall events across space. Patchiness of rainfall can contribute to an increase of yield stability over space. Existing rainfall simulators tend to focus on station-level time series, not on space/time autocorrelation.

WaNuLCAS a model of Water, Nutrient and Light Capture in Agroforestry Systems

The WaNuLCAS model 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 (simultaneous and sequential agroforestry).

SLIM: Simple Light Interception Model

The purpose of the SLIM software is to compute canopy closure (an index of long term light level) at any height above the ground within a forest canopy. It was initially developed as a module of the dynamic forest growth model, SExI Forest Simulator.

FBA: Fractal Branch Analysis model

Trees come in various shapes, grow at different rates and interact with their neighbours during development. Yet, many of the properties of an individual  tree can be predicted if we know the diameter of its stem.

Agroforestry impact on soil health – a soft systems model representing current knowledge

This is a soft systems model that represents the author’s knowledge from scientific literature and field experience of the differential impact of agroforestry systems on soil health, implemented as a Bayesian Network (BN).

Decision Support R package

This is a tool for making big decisions without perfect information.

Decision analysis

Author:  Eike Luedeling

FALLOW: Forest, Agroforest, Low-value Landscape Or Wasteland?

FALLOW is a landscape-dynamics model, which comprises the following main annual dynamic processes: (1) plot-level soil fertility dynamics in crop and fallow phases affecting agricultural crop production; (2) food storage, use and sale at the village level, with options along the spectrum from ‘fu

SExI-FS: Spatially Explicit Individual-based Forest Simulator

The SExI Forest Simulator focuses on tree-tree interactions in a mixed multi-species agroforest. The high level of structural complexity of such traditional agroforestry systems defies classical forestry approaches when it comes to optimizing management practices. To cope with this complexity, farmers have adopted a tree-by-tree management approach, which is closer to gardening than to any usual tropical forestry or estate crop management model. Individual tree care and regular tending takes