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【目的】研究不同密度调控(疏伐强度分别为对照：0%；密度调控理Ⅰ：65%；密度调控Ⅱ：75%；)对川西山地云杉(Picea asperata Mast. )人工林地被物、土壤水文特征的影响。【方法】通过典型抽样法获取了不同处理方式下的林地苔藓、枯落物和土壤的水文指标，开展方差比较分析。【结果】疏伐不但促进了云杉人工林的单株生长量，还促进了林下植被的生长，具体为：密度调控Ⅱ>密度调控理Ⅰ>对照；林下苔藓的最大持水率介于 558%～594%之间，显著低于天然林，但在三个处理间不存在显著差异；就苔藓蓄积量和最大持水量而言，密度调控Ⅱ显著高于另两种处理，这可能与林下苔藓多样性和生物量随着光照条件的改善而增加有关；三个处理间，云杉人工林林下枯落物的蓄积量、最大持水率亦然和最大持水量均无显著差异；云杉人工林林下土壤密度介于 0.87～0.93g/cm3之间，显著高于天然次生林以及原始林，但无论是在各个层次间还是不同的处理类型下均无显著的差异。两种密度调控处理的土壤毛管持水量、土壤最小持水量和土壤最大持水量均较对照组显著增加，但两密度调控组间则无显著差异，这可能是因为林分地下生物量的增加，通过促进土壤层有机质含量以及土壤动物活动等，进而促进土壤层孔隙度和渗透能力。【结论】从 6 年的短期效应看，两种调控处理均对云杉人工林的地被物和土壤的持水能力均产生了一定的正面效应，相比之下，密度调控Ⅱ的影响更大些，两种密度调控对于云杉人工林地被物和土壤水文效应的影响还有待于进一步的观测研究。
【Objective】 The objective of this study was to investigate the effects of different density control (thinning intensity control: 0%, density control Ⅰ: 65%, density control Ⅱ: 75%) on ground cover of Picea asperata Mast. Influence of Soil Hydrological Characteristics. 【Method】 Hydrological indexes of moss, litter and soil under different treatments were obtained by typical sampling method, and comparative analysis of variance was carried out. 【Result】 Thinning not only promoted single plant growth of Picea mongolica but also promoted the growth of understory vegetation. The density control Ⅱ> density control Ⅰ> control; the maximum water holding capacity of moss Between 558% and 594%, which was significantly lower than that of natural forest, but there was no significant difference among the three treatments. In terms of moss volume and maximum water holding capacity, density-regulated Ⅱ was significantly higher than the other two treatments, which may be And moss diversity and biomass under the forest increased with the improvement of light conditions; under the three treatments, the volume of forest litter, the maximum water holding capacity and the maximum water holding capacity were not significant The density of soil under spruce plantations was between 0.87 and 0.93 g / cm3, which was significantly higher than those of natural secondary forests and virgin forests. However, there was no significant difference between the treatments under different layers or treatments. The soil capillary holding capacity, soil minimum water holding capacity and soil maximum water holding capacity under the two density control treatments both increased significantly compared with the control group, but there was no significant difference between the two density control groups, which may be due to the increase of underground biomass, By promoting soil organic matter content and soil fauna activities, thereby promoting soil porosity and permeability. 【Conclusion】 According to the short-term effects of six years, both treatments had certain positive effects on the water-holding capacity of the cover material and soil in the spruce plantations, compared with the effects of density control II Larger, the two density control on the spruce plantations and soil hydrological effects of await further study.