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作 者 ：李金花, 李镇清

期 刊 ：植物生态学报 2002年 26卷 4期 页码：435-440

关键词：生态适应；放牧强度；冷蒿；星毛委陵菜；形态可；

Keywords:Ecological adaptation, Grazing intensity, A. frigida and P. acaulis, Clonal morphological plastic,

摘 要 ：研究了不同放牧强度下（不放牧、轻牧(1.33只羊/hm2)、中牧(4.00只羊/hm2)、重牧(6.67只羊/hm2)）冷蒿 (Artemisia frigida)、星毛委陵菜 (Potentilla acaulis)的克隆形态（间隔子长度、分枝强度）可塑性以及生物量分配格局。两种植物的间隔子长度、分枝强度沿放牧梯度具有显著的可塑性反应。冷蒿间隔子长度：不放牧>轻牧>重牧>中牧；分枝强度：重牧>中牧>轻牧>不放牧。星毛委陵菜间隔子长度:轻牧>不放牧>中牧>重牧；分枝强度:重牧>中牧>轻牧>不放牧。冷蒿种群

Abstract:In order to understand the degradation process and its mechanism on Inner Mongolia Typical Steppe, clonal morphological plasticity and biomass allocation patterns of two dominant species, Artemisia frigida and Potentilla acaulis were studied under differe

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