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,*()
),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,*()
),ZHENG Shu-Xia1,*()
图4. 氮添加对典型草原6个优势物种相对生物量(RAB)的影响(平均值±标准误差)。PR, 多年生根茎禾草; PB, 多年生丛生禾草; PF, 多年生杂类草。Control, 完全对照, 不添加任何肥料。
Fig. 4. Effects of N addition on the relative aboveground biomass (RAB) of six dominant species in a typical steppe (mean ± SE). PR, perennial rhizome grasses; PB, perennial bunch grasses; PF, perennial forbs. Control, absolute control, no fertilizer added.
