The document summarizes research analyzing the contribution of trees to livelihoods in Tanzania using panel data from Living Standards Measurement Surveys. The research aims to quantify the impact of trees on agricultural productivity and incomes. Fixed effects regressions and propensity score matching techniques are used to control for endogeneity and identify causal effects. Preliminary results suggest large gains in agricultural production and value are possible from increasing the number of trees on plots, though more research is needed to better understand impacts by crop, tree type, and region.
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