Global Human Population Dynamics: Delayed Logistic Growth Model

Osezele Izibili

This model simulates the future trajectory of the global human population using a delayed logistic growth framework. Unlike simple exponential growth, this model assumes that Earth has a finite carrying capacity (K) limited by resources, space, and environmental constraints. It incorporates a generation-time delay to represent the lag between an increase in population density and its feedback effects on birth and death rates (e.g., resource depletion, urbanization, and social changes). The model demonstrates how a delay in density-dependent feedback can cause the human population to overshoot the carrying capacity before stabilizing or oscillating.