I am trying to calculate a natural capital indicator at region scale (first administrative level i.e. province, department, region, state, etc. according to the country) in Latin America. Can you suggest literature or reference methods?
Check out the System of environmental-economic Accounts (United Nations et al.1993, revised but less clear on the scope of natural capita: 2012). For a rough global application see Bartelmus, P., 2009. The cost of natural capital consumption: accounting for a sustainable world economy. Ecol. Econ. 68, 1850–1857.