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本文对次生蒙古栎林中的灌木层及主要灌木树种（毛榛子、溲疏和刺五加）在林分养分生物循环中的地位与作用进行了研究。研究结果表明，虽然灌木层在生物量、养分量、存留量、归还量等方面在林分中都次于乔木层，但循环速率为０．６８，高于乔木层（０．６０），又高于林分（０．６４），在林分养分步入良性循环中起着重要的不可缺少的作用。毛棒子和溲疏是灌木中的优势或亚优势树种，是在养分良性循环中具有突出贡献的树种，是重点保护的树种。刺五加在养分循环中，养分存留的比较多，归还比较少、循环速率比较低，具有消耗地力并具有药用的灌木，在此林分中既应保护、维持，又要加以控制。
In this paper, the status and function of shrub layer and main shrub species (hazelnut, slender and acanthopanax senticosus) in secondary Mongolian oak forest in the nutrient cycle of the stands were studied. The results showed that although the shrub layer was inferior to the arbor layer in the biomass, nutrient content, storage and return, the cycling rate was 0.68, higher than that of the arbor layer (0.60) Higher than the stand (0.64), in the standpoint of nutrients into the virtuous circle plays an important and indispensable role. Hairy corncobs and tangshu are the dominant or subdominant species in shrubs. They are the species that have made outstanding contributions in the nutrient-rich cycle and are the key species for conservation. Acanthopanax senticosus in the nutrient cycle, nutrient retention more, return less, the cycle rate is relatively low, with the consumption of fertility and medicinal shrubs, in this stand should not only protect, maintain, but also to be controlled.