Table 3 Study coding categories

Nature of evidence

Sources of evidence (journal types and subjects, grey literature), Type of study (socio economic, environmental)

Representativeness and coverage of evidence

Geographic coverage (scope, location, scale)

Focus (firewood, charcoal, other related energy sources)

Populations (value chain participants, Forest type, Information on agro ecological zone, Tenure and Sample size and of population of interest)

Measure of changes/impacts

Nature of outcomes reported (increase, decrease, no change/neutral)

Socio-economic (income, employment, asset, equity, costs, profit)

Environmental (deforestation, forest area, degradation, biodiversity, C stocks regeneration, ecosystem services)

List of outcomes that are not comparative in nature, but relevant to answer the review questions

Context

Regulatory framework described (trade, energy, environment)