The term used to describe the variety of ecosystems within a geographical area is ecosystem diversity. This concept encompasses the range of different habitats, biological communities, and ecological processes present in that region. High ecosystem diversity contributes to overall biodiversity, promoting resilience and stability within the environment. It is crucial for maintaining essential ecosystem services, such as clean air and water, pollination, and nutrient cycling. Conservation efforts often focus on protecting ecosystems to sustain their diversity, ensuring long-term ecological health and functionality.