Changes in wealth breakdown in Dabano, Tigray between 1970/71 and 2001/01
HEA can also be used to assess whether there has been a shift in asset ownership or in the membership of wealth groups. It can also help to identify the causes of observed shifts. This is important as it helps to distinguish between changes in wealth patterns that are slow and structural, and those that are rapid and linked to a recent disaster.
The figure on the right compares HEA data from 2000 with data from
1970 in one part of Tigray, Ethiopia, and shows a trend towards impoverishment over those thirty years. But the livelihoods data showed that this did not mean that the villages had become more vulnerable to crop failure. Rather, in 2000 the poor were sustained in their villages not by local transfers as in the past - when wealth was produced locally - but by capital from outside the area. This capital came mainly from migrant laborers working in neighboring regions, and also from food aid paid out to laborers on public work schemes or food for work.