放牧家畜类型对内蒙古典型草原植物多样性和群落结构的影响

王姝文, 李文怀, 李艳龙, 严慧, 李永宏

Effects of different livestock types on plant diversity and community structure of a typical steppe in Nei Mongol, China

WANG Shu-Wen, LI Wen-Huai, LI Yan-Long, YAN Hui, LI Yong-Hong

表2 不同放牧家畜对内蒙古典型草原4个优势种的选择性采食指数

Table 2 Selective index of different livestock types to four dominant plant species in a typical steppe in Nei Mongol

家畜类型 Livestock type 上层优势种 Tall dominant species 下层优势种 Short dominant species 羊草 Leymus chinensis 大针茅 Stipa grandis 糙隐子草 Cleistogenes squarrosa 黄囊薹草 Carex korshinskyi 牛 Cattle 1.148 0.713 1.113 1.253 0.918 1.673 山羊 Goat 1.224 0.652 0.881 1.592 0.950 2.585 绵羊 Sheep 0.277 3.029 1.072 0.576 3.583 3.309