Impacts of woody invasive alien plant species on rural livelihood: Generalized propensity score evidence from Prosopis spp. invasion in Afar Region in Ethiopia

Pastoralism

Research, Policy and Practice

Table 9 Estimated dose-response function for household per capita consumption expenditure

Consumption expenditure	Coef.	Std. err.	Z value
Prosopis invasion	12,232.97	6059.19	2.02**
Prosopis invasion square	− 15,390.25	8589.48	− 1.79*
GPS	− 1287.42	1183.92	− 1.09
GPS square	419.99	257.11	1.63
Invasion*GPS	− 2082.39	1428.20	− 1.46
Intercept	3576.77	1502.97	2.38***
Adj R-squared	0.033
Number of obs.	240

Source: own computation results based on survey data, 2016. ***, ** and * means significant at the 1, 5 and 10% probability levels, respectively