黄土区封育和放牧草地物种多样性和地上生物量对氮素添加的响应
赵洁1, 李伟2, 井光花2, 魏琳2, 程积民1,2,*

Responses of species diversity and aboveground biomass to nitrogen addition in fenced and grazed grassland on the Loess Plateau
ZHAO Jie1, LI Wei2, JING Guang-Hua2, WEI Lin2, CHENG Ji-Min1,2,*
封育草地(F)和放牧草地(G)α多样性对氮素添加的响应 R、S、J分别代表物种丰富度、Shannon-Wiener多样性指数、Pielou均匀度指数。* 表示封育草地与放牧草地在同一处理下差异显著( P <0.05)。 R, S, J represent species richness, Shannon-Wiener index and Pielou index. * indicates significant difference among fenced and grazed plots under the same treatment ( P <0.05).