雅思阅读

📖 Reading Passage

The concept of 'environmental carrying capacity' has long been central to ecological theory, yet its application to human societies remains contentious. While biologists define carrying capacity as the maximum population size an environment can sustain indefinitely, human systems introduce variables such as technology, trade, and cultural values that complicate direct translation. Recent studies suggest that technological innovation can temporarily raise carrying capacity, but often at the cost of depleting non-renewable resources. This creates a paradoxical situation where short-term gains undermine long-term sustainability. Consequently, some scholars argue for a more dynamic model that integrates socio-economic factors, rather than relying on static biological thresholds. Such a model would acknowledge that human carrying capacity is not fixed but evolves with societal choices, making predictions inherently provisional.