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climate
500-900mm annually, 20-25*c summer, -5 to -20*c winter
vegetation
dominated by grasses and herbaceous plants, trees are rare due to low rainfall
soil carbon
200-500Gt carbon, 35% of terrestrial carbon in soils
threats
agriculture reduces soil carbon by 25-50%
soil degradation
intensive ploughing exposes stored carbon
management strategies
Great Plains Conservation Program