A sampling plot investigation was conducted on the Quercus wutaishanica forests under close-to-natural plantation thinning 13.4% (light thinning) and 30. 0% (heavy thinning) in Huanglong Mountain on the Loess Plateau, China. Regeneration and development of stump sprout of Q. wutaishanica during 6 years after thinning were studied. The study showed that: 1 ) Sprouting success, number of sprouts per stump, and sprout height differed little from light and heavy thinning after thinning 1 year. 2) Stump height and diameter had influence on the number of stump sprouts. The sprout number increased with the height of stumps, it would decrease when the height was over 20 cm, and it followed a thrice parabola. The number of stump sprouts increased as the increase of stump diameter, and then it decreased as the stump diameter increased too large. Stumps of diameter 30 - 50 cm had the stronger sprouting ability than of other diameter. 3) Negative relationship was found between height and number of stem3, meaning that there was trade-off between sprouting and height growth. 4) For 6 years after thinning, the survival of stump sprouting was 97. 01%. Thinning intensity had influence on sprout development. 5) During the observation period, the height of leading sprout decreased as the increase of thinning age. The number of dead sprout increased as the sprout number increasing of each stump, indicated that stump sprouts of Q. wutaishanica could develop into big tree instead of the cut and fallen trunk. Therefore, height of stump should low below 20 cm. Thinning stump of diameter 30- 50 cm was more suitable to an asexual regeneration. The measures of bud pruning and thinning sprouts after logging can accelerate the retain sprout growth. The thinning 30. 0% (heavy thinning) was more advantageous to regeneration and development of stump sprouts.%通过对黄土高原黄龙山林区辽东栎林固定样地连续6年的调查,研究间伐强度分别为13.4％(弱度间伐)和30.0％(强度间伐)的辽东栎伐桩萌苗的存活与生长规律.结果表明:1)间伐第1年,辽东栎伐桩均有萌生枝发生,每桩萌生枝数量和萌生枝高度在不同强度间无显著差异；2)萌生枝数量受伐桩高度和直径的影响,当伐桩高度较低时,萌生枝数量随伐桩高度的增加而增加,超过20cm后随之减少,呈三次抛物线关系；伐桩萌生枝数量随着伐桩直径增加呈现先增加后减少的趋势,直径30～50cm的伐桩萌生枝数量最多；3)伐桩萌生枝数量与最长萌生枝高度呈显著线性负相关,存在“萌生枝数量——高度权衡”现象；4)间伐第6年,伐桩的存活率为97.01％,强度间伐区萌生枝高度显著高于弱度间伐区；5)调查期间,辽东栎伐桩萌生枝数量逐年下降,伐桩产生的萌生枝数量越多,后期萌生枝死亡的数量也越多,表明伐桩能够自我稀疏,存在“萌代主”现象.在黄土高原地区,辽东栎伐桩萌芽潜力很大,应合理利用；间伐时伐桩高度应尽量低于20cm；伐桩直径在30～50cm更有利于其无性更新；间伐后伐桩应及时除蘖定株,促进萌生枝生长；间伐强度30.0％(强度间伐)更有利于辽东栎伐桩萌生枝的生长.
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