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氮添加对内蒙古退化草地植物群落多样性和生物量的影响
杨倩1,2,王娓2*(),曾辉1,2*()
Effects of nitrogen addition on the plant diversity and biomass of degraded grasslands of Nei Mongol, China
Qian YANG1,2,Wei WANG2*(),Hui ZENG1,2*()

图1. 研究区域及样地分布图。EDG, 极度退化草地; MDG, 中度退化草地; SDG, 重度退化草地。

Fig. 1. Study area and the spatial distribution of study sites. EDG, extremely degraded grassland; MDG, moderately degraded grassland; SDG, severely degraded grassland.