Irreversible Loss: Why Ancient Grasslands Cannot Fully Regenerate

Gist A recent global study published in the Proceedings of the National Academy of Sciences reveals that ancient grasslands, once destroyed by development or agriculture, cannot fully regenerate to their original ecological state even after a century. The secondary growth that replaces them consists of distinctly different, structurally altered, and often non-native plant species due to permanently changed soil chemistry. For civil services aspirants, this highlights a critical flaw in land-use governance that treats these vital carbon sinks as "wastelands" meant for diversion or artificial afforestation, threatening massive biodiversity and livestock livelihoods. Background Ancient grasslands are naturally occurring ecosystems dominated by grasses and herbaceous plants, historically maintained by natural fires and grazing by megafauna such as the savannas of India and Australia , or the prairies of North America . In Indian environmental and revenue governance, grasslands have historically suffered from misclassification as "wastelands", making them prime targets for diversion toward renewable energy projects, mining, or misguided tree-plantation drives. Old-growth grassland plants are ecologically "resource conservative," meaning they are adapted to survive in specific, undisturbed nutrient cycles and native soil…