Over-exploitation of open-access natural resources and global indeterminacy in an economic growth model
Angelo Antoci (),
Marcello Galeotti () and
Paolo Russu Additional contact information Angelo Antoci: Universita' degli Studi di Sassari
Marcello Galeotti: Dipartimento di Matematica per le Decisioni, Universita' degli Studi di Firenze
Paolo Russu: Universita' degli Studi di Sassari
Abstract:
In this paper we use global analysis techniques to investigate an economic growth model with environmental negative externalities, giving rise to a three-dimensional dynamic system (the framework is the one introduced by Wirl (1997)). The dynamics of our model admits a locally attracting steady state which is, in fact, a poverty trap, coexisting with another steady state possessing saddle-point stability. Global dynamical analysis shows that, under some conditions on the parameters, if the economy state variables are close enough to those of the attractive point, then there exists a continuum of equilibrium orbits approaching the poverty trap and one orbit approaching the saddle-point.