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长期氮添加对典型草原植物多样性与初级生产力的影响及途径
王玉冰1,2,孙毅寒1,2,丁威3,张恩涛1,2,李文怀1,迟永刚4,*(),郑淑霞1,*()
Effects and pathways of long-term nitrogen addition on plant diversity and primary productivity in a typical steppe
WANG Yu-Bing1,2,SUN Yi-Han1,2,DING Wei3,ZHANG En-Tao1,2,LI Wen-Huai1,CHI Yong-Gang4,*(),ZHENG Shu-Xia1,*()

图3. 氮添加对典型草原群落加权性状的影响(平均值+标准误差)。群落性状加权值: PHCWM, 株高; PBCWM, 株丛生物量; SLRCWM, 茎叶比; SLACWM, 比叶面积; LDMCCWM, 叶片干物质含量; LNCCWM, 叶片氮含量。Control, 完全对照, 不添加任何肥料。各处理间差异不显著(p > 0.05)。

Fig. 3. Effects of N addition on community-weighted mean traits in a typical steppe (mean + SE). Community-weighted mean traits included community-weighted plant height (PHCWM), individual biomass (PBCWM), stem:leaf biomass ratio (SLRCWM), specific leaf area (SLACWM), leaf dry mass content (LDMCCWM), and leaf N content (LNCCWM). Control, absolute control, no fertilizer added. No significant difference among treatments (p > 0.05).