Food security index and forest cover change
We developed an index of food security for the Caatinga using the four
dimensions described in FAO
(2013) to select the
variables to represent each dimension. All variables were collected from
the Brazilian official sources (e.g. IBGE, Ministry of Health) using
1,141 municipalities of the Caatinga as sample units (Figure 1). We
selected 38 variables that are summarised in Table 1. The respective
premise and sources of each variable are in Supplementary Table 1.
Table 1. Variables used to build a food security index for the
Caatinga municipalities and the respective measure and brief definition.