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-Min^1,^2,^*

封育草地(F)和放牧草地(G)各功能群地上生物量对氮素添加的响应