世界自然保护联盟IUCN：2026年草原与稀树草原：定义退化、恢复及成功的关键原则报告（英文版）

This section illustrates the principles that underpin grassland and savanna classification, emphasising both the functional and structural elements that define these ecosystems. Together, structure, herbivory, soils, fire, and climate, provide the conceptual basis for distinguishing savannas and grasslands, and their sub-types, within the IUCN framework