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,^*

氮素添加后物种多样性指数与凋落物生物量和植被透光率之间的关系以Shannon-Wiener多样性指数为响应变量,凋落物生物量、植被透光率为解释变量建立回归模型。Regression models were established by using Shannon-Wiener index as response variable and litter aboveground biomass, vegetation light penetration as explanatory variables.