TY  - JA
AU  - Mponela,P.
AU  - Quang Bao Le
AU  - Snapp,S.S.
AU  - Villamor,G.B.
AU  - Tamene,L.
AU  - Borgemeister,C.
TI  - MASSAI: Multi-agent system for simulating sustainable agricultural intensification of smallholder farms in Africa
SN  - 2215-0161
PY  - 2023///
CY  - Netherlands
PB  - Elsevier B.V.
KW  - Farm Inputs
KW  - AGROVOC
KW  - Nutrient balance
KW  - Farming systems
KW  - Modelling
KW  - Policies
KW  - Soil quality
KW  - Sustainability
KW  - Africa
N1  - Peer review; Open Access
N2  - The research and development needed to achieve sustainability of African smallholder agricultural and natural systems has led to a wide array of theoretical frameworks for conceptualising socioecological processes and functions. However, there are few analytical tools for spatio-temporal empirical approaches to implement use cases, which is a prerequisite to understand the performance of smallholder farms in the real world. This study builds a multi-agent system (MAS) to operationalise the Sustainable Agricultural Intensification (SAI) theoretical framework (MASSAI). This is an essential tool for spatio-temporal simulation of farm productivity to evaluate sustainability trends into the future at fine scale of a managed plot. MASSAI evaluates dynamic nutrient transfer using smallholder nutrient monitoring functions which have been calibrated with parameters from Malawi and the region. It integrates two modules: the Environmental (EM) and Behavioural (BM) ones. •The EM assess dynamic natural nutrient inputs (sedimentation and atmospheric deposition) and outputs (leaching, erosion and gaseous loses) as a product of bioclimatic factors and land use activities. •An integrated BM assess the impact of farmer decisions which influence farm-level inputs (fertilizer, manure, biological N fixation) and outputs (crop yields and associated grain). •A use case of input subsidies, common in Africa, markedly influence fertilizer access and the impact of different policy scenarios on decision-making, crop productivity, and nutrient balance are simulated. This is of use for empirical analysis smallholder's sustainability trajectories given the pro-poor development policy support
DO  - https://doi.org/10.1016/j.mex.2023.102467
T2  - Frontiers in Ecology and the Environment
ER  -