Overgrazing-induced legacy effects may permit Leymus chinensis to cope with herbivory.

摘要: There is growing evidence that herbivory-induced legacy effects permit plants to cope with herbivory. However, defense strategies in against grazing mammals have received little attention. To further understand the grazing-induced on plants, we conducted a greenhouse experiment Leymus chinensis experiencing different histories. We focused above-ground spatial avoidance and below-ground biomass allocation. Our results showed L. collected from continuous overgrazing plot (OG) exhibited higher performance under simulated terms of growth, cloning colonizing ability than those 35-year no-grazing (NG). The enhanced adaptability OG was attributed increased avoidance, which mediated by larger leaf angle shorter height (reduced vertical contributed at lower herbivory stubble height, while reduced tiller natural height). Contrary our prediction, pre-allocated less rhizome, does not benefit tolerance chinensis; however, this also may reflect strategy where allocation rhizomes associated production ramets.