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 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,
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.
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).
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.
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.
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).
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
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
The World Agroforestry Centre (ICRAF) is a centre of scientific excellence possessing the world’s largest repository of agroforestry science and information. Our vision is an equitable world where all people have viable livelihoods supported by healthy and productive landscapes. The Centre generates science-based knowledge about the diverse roles that trees play in agricultural landscapes, and uses its research to advance policies and practices, and their implementation that benefit the poor and the environment.