雅思阅读

📖 Reading Passage

The concept of 'environmental carrying capacity' has long been central to ecological studies, yet its application to human societies remains contentious. Unlike non-human populations, which are typically limited by resource availability and predation, human communities can expand their carrying capacity through technological innovation and trade. However, this expansion often comes at the cost of depleting natural capital, such as soil fertility, freshwater reserves, and biodiversity. Recent research suggests that while technological advances have historically postponed the onset of resource scarcity, they have not eliminated the fundamental biophysical constraints. For instance, the Green Revolution increased crop yields but simultaneously exacerbated water pollution and soil degradation. Consequently, some scholars argue that sustainable development requires not merely technological fixes but a reevaluation of consumption patterns, particularly in affluent societies, where per capita resource use far exceeds the global average. This perspective challenges the optimistic assumption that human ingenuity alone can indefinitely overcome environmental limits.