【摘要】 对原始椴树红松林中的灌木层及主要灌木种（毛榛子、溲疏和刺五加）的生物量、养分量、存留量、归还量、吸收量、循环速率等方面在林分的养分循环中的地位与作用进行了研究。研究结果表明：灌木层虽在林分的养分循环中处于次要地位，但具有促使林分养分步入良性生物循环的重要作用。毛榛子和溲疏是该林分灌木中的优势或亚优势种，在养分循环中起着重要的或突出的作用，是重点保护的灌木种。刺五加在养分循环中存留养分比较多，归还养分比较少，虽然消耗地力却是具有药用的灌木种，对它应既维持又要控制。更多还原

【Abstract】 The status and role of the biomass, nutrient content, remained content, returned content, absorption content and the cycling rate of the shrub layer and main shrub species in nutrient cycling of Tilia amurensis Pinus koraiensis forest were studied. The results show that the shrub layer plays a very important role in promoting the nutrient cycling of the forest although they are in the secondary status in the forest. Corylus mandshurica and Deutzia amurensis are dominant or sub-dominant shrub species in the forest and have an evident effect on nutrient cyclings, and should be protected. Acanthopanax senticosus matains more nutrient and returns less nutrient in the cycling. Although exhausts the soil, it can be used as drug, so it should be both protected and controlled in the forest.更多还原