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Impact on human population
Habitat destruction vastly increases an area's vulnerability to natural disasters like flood and drought, crop failure, spread of disease, and water contamination. On theother hand, a healthy ecosystem with good management practices will reduce the chance of these events happening, or will at least mitigate adverse impacts.
Aesthetic uses such as birdwatching,recreational uses like hunting and fishing, and ecotourism usually rely upon virtually undisturbed habitat. Probably the most profound impact that habitat destruction has on people is the loss of manyvaluable ecosystem services.
The loss of trees from the tropical rainforests alone represents a substantial diminishing of the earth’s ability to produce oxygen and use up carbon dioxide. These servicesare becoming even more important as increasing carbon dioxide levels is one of the main contributors to global climate change.
The loss of biodiversity may not directly affect humans, but the indirecteffects of losing many species as well as the diversity of ecosystems in general are enormous. When biodiversity is lost, the environment loses many species that provide valuable and unique roles tothe ecosystem. The environment and all its inhabitants rely on biodiversity to recover from extreme environmental conditions. When too much biodiversity is lost, a catastrophic event such as anearthquake, flood, or volcanic eruption could cause an ecosystem to crash, and humans would obviously suffer from that. The negative effects of habitat destruction usually impact rural populations moredirectly than urban populations. Another way to view the negative effects of habitat destruction is to look at the opportunity cost of keeping an area undisturbed. In other words, what are people losingout on by taking away a given habitat?
The impending global food crisis will be a major source of habitat destruction. Commercial farmers are going to become desperate to produce more food from the...