草甸草原羊草茎叶功能性状对长期过度放牧的可塑性响应

李西良,侯向阳,吴新宏,萨茹拉,纪磊,陈海军,刘志英,丁勇

Plastic responses of stem and leaf functional traits in Leymus chinensis to long-term grazing in a meadow steppe

LI Xi-Liang,HOU Xiang-Yang,WU Xin-Hong,null null,JI Lei,CHEN Hai-Jun,LIU Zhi-Ying,DING Yong

图5 短期围封(SE)、中度放牧(MG)与重度放牧(HG)下羊草茎叶性状可塑性指数(PI)变化程度排序。AB, 总质量; LA, 单叶面积; LL, 平均叶长; LLW, 平均长宽比; LMA, 比叶质量; LN, 叶片数; LW, 平均叶宽; LWE, 单叶质量; PH, 株高; SD, 茎粗; SL, 茎长; SLD, 茎长/茎粗; SLW, 茎质量/叶质量; SW, 茎质量; TLA, 总叶面积; TLW, 叶质量。

Fig. 5 Sorting of Leymus chinensis leaf and stem trait plasticity index (PI) change in short-term enclosure (SE), moderate grazing (MG) and heavy degree grazing (HG). AB, aboveground biomass; LA, leaf area; LL, leaf length; LLW, leaf length/width ratio; LMA, leaf mass per area; LN, leaf number; LW, leaf width; LWE, leaf mass; PH, plant height; SD, stem diameter; SL, stem length; SLD, stem length/stem diameter; SLW, stem mass/leaf mass; SW, stem mass; TLA, total leaf area; TLW, total leaf mass.