Green National Accounting (1) corrects one of the flaws in conventional national accounting, which is ignoring the important role of nature as a source of inputs into production processes.
In some sectors these environmental inputs are very important (e.g. forestry, farming and fishing), while in other sectors they play a minimal role (e.g. banking, commerce and education). In each sector they interact with the two other conventional production factors, labor and capital, to produce the total GDP for the sector, but the proportions are different for each sector (see Figure 1 for the sectors with a significant environmental component):