An ecospheric recovery model for agriculture-industry interactions (Q1002393)

Models of agricultural-industrial-environmental interaction are studied. Two forms for the restoration effort to enhance the yield are proposed. Also the case of relay is studied. In each of these cases the equilibria are found. The conditions for their local stability are derived. The global stability of some of these equilibria are established using Lyapunov function. Some numerical examples are given. In the reviewer's opinion this paper is interesting yet in the second paragraph of the introduction the authors indicate the need for delay for the model to be more realistic. I did not notice this delay in the model!