Stand density and basal area are considered to be an important indicator of aboveground as well as belowground dynamics in forests. To understand the relationship between stand characteristics and fine root dynamics of chir pine (Pinus roxburghii) mixed banj oak (Quercus leucotrichophora) forests in central Himalaya we studied fine root mass, productivity, turnover rate and nutrient dynamics. Four sites were selected on the basis of increasing density and basal area of trees. From each site, ten random fine root samples were collected for one year by sequential coring method, using root corer of 8.0 cm diameter from three depths (0–10, 10–20 and 20–30 cm) on a monthly basis. Total mean fine root mass varied from 2.15 to 3.12 Mg ha⁻¹, with biomass and necromass varying from 1.48 to 1.93 Mg ha⁻¹ and 0.67 to 1.18 Mg ha⁻¹, respectively. In terms of vertical distribution, values of both biomass and necromass decreased with increasing soil depth. Productivity was estimated between 1.24 and 1.51 Mg ha⁻¹ y⁻¹ while turnover rate varied from 0.78 to 0.84 y⁻¹ throughout the sites. Concentration of nitrogen was found higher in live fine roots whereas, phosphorus, potassium and calcium did not show any significant variation between live and dead fine roots. In the present study, higher fine root mass upon increase in density and basal area of trees suggests that stand characteristics positively correlate with fine root mass while nutrient dynamics remain unaffected by stand characteristics as well as seasonal changes.

林分密度和基础面积被认为是森林中地上和地下动态的重要指标。为了了解喜玛拉雅中部喜树松（Pinus roxburghii）混合班吉栎（Quercus leucotrichophora）林的林分特征与细根动态之间的关系，我们研究了细根质量，生产力，周转率和养分动态。根据树木密度和基础面积的增加，选择了四个地点。通过顺序取芯方法，从每个站点每月收集十个随机的细根样本，为期一年，使用直径为8.0 cm的根核从三个深度（0–10、10–20和20–30 cm）进行。平均平均细根质量在2.15至3.12 Mg ha ^{-1之间变化}，生物量和坏死分别为1.48至1.93 Mg ha ^-1和0.67至1.18 Mg ha ^-1。在垂直分布方面，生物量和坏死值均随土壤深度的增加而降低。生产率1.24和1.51镁公顷之间估计^-1 ý ^{- 1}而周转速率变化从0.78到0.84ÿ ^{- 1}整个站点。活细根中的氮含量较高，而磷，钾和钙在活细根和死细根之间未显示任何显着变化。在本研究中，随着树木密度和基础面积的增加，较高的细根质量表明，林分特征与细根质量呈正相关，而养分动态不受林分特征和季节变化的影响。