Final answer:
The green belt is a conservation strategy that integrates protected areas with human-dominated landscapes to maintain biodiversity. It addresses the limitations of isolated preserves by emphasizing the importance of larger, connected regions for species survival and ecological integrity.
Step-by-step explanation:
The green belt refers to areas of land where development is restricted to protect the natural environment, maintain land for agriculture, forestry, and outdoor recreation. It is important in conservation because it provides a buffer zone that protects natural habitats from the encroachments of urban sprawl. The concept of green belts is tied into the broader practice of countryside biogeography, which examines ways to manage conservation in landscapes dominated by human use. This approach addresses the idea that simple preservation in isolated areas (conservation preserves) is not sufficient due to the limitations imposed by political, economic, and environmental factors like climate change. Therefore, integrating human-managed areas with conservation areas to address biodiversity protection is critical. A mix of protected areas and utilitarian landscapes forms a mosaic where biodiversity conservation is achieved, not just in isolated pockets, but across a broader landscape. This intertwining of human activities and conservation efforts creates a win-win scenario where agricultural expansion and other land uses can proceed with minimal displacement of native species.
Additionally, conservation practices now extend beyond traditional reserves and include initiatives such as watershed management and community conservation efforts. Focusing solely on creating reserves is no longer enough; there must be measures in place to mitigate the threats of activities such as agricultural expansion and urban development. The survival of many species depends on the existence of extensive, partially modified landscapes that serve as habitats and migration corridors. Conservation biologists recognize the need to promote sustainable practices beyond preserves to ensure the long-term viability of the planet's biodiversity.