Effects of fire, drought and climate change on species composition and primary production in a tallgrass prairie

摘要: Our objective was to investigate the effects of fire, drought and climate change on species composition primary production in tallgrass prairie. We used an individual plant-based simulation model (STEPPE) linked with a multilayer soil water (SOILWAT) evaluate fire frequency, dynamics A number simulations were conducted different frequencies, intensities scenarios. Both separate interactive three factors evaluated. found frequency be important limiting woody plant invasion maintaining perennial grass dominance. C{sub 4} plants less sensitive than 3} drought. Effects dependent upon balance between changes temperature precipitation interacting