Tajikistan’s rangelands are mostly mountainous and consist of summer and winter pastures. Vegetation structure and composition in these diverse landscapes are generally influenced by environmental factors. The objective of this study was to assess the effects of aspect on vegetation characteristics of two mountainous pastures (summer and winter) over two seasons (autumn and spring) in Tajikistan. A three-way ANOVA was conducted using GLM procedures to test the main effects and interactions of these factors on vegetation attributes. The biomass production (kg DM ha⁻¹) was significantly greater on the north-facing aspects for both summer and winter pastures in spring (483.4, 326.1) and autumn (57.2, 143.9), compared with south-facing aspects (57.2, 143.9 in spring and 18.5, 48.2 in autumn, respectively). Plant cover and plant density were also greater on north than south-facing slopes for summer and winter pastures in spring and autumn. Aspect significantly affected species diversity, botanic composition, and plant life forms of both pastures mainly for grasses and geophytes. There were greater vegetation responses on north than south-facing slopes, implying that aspect is important when designing mountain rangeland restoration. Given this complexity, land managers should thoroughly assess the conditions of the target site before defining restoration objectives and interventions.

塔吉克斯坦的牧场大部分是山区，由夏季和冬季牧场组成。这些多样化景观中的植被结构和组成通常受环境因素的影响。本研究的目的是评估坡向对塔吉克斯坦两个山区牧场（夏季和冬季）两个季节（秋季和春季）植被特征的影响。使用 GLM 程序进行了三向方差分析，以测试这些因素对植被属性的主要影响和相互作用。生物量产量（kg DM ha ⁻¹) 在夏季和冬季牧场春季 (483.4, 326.1) 和秋季 (57.2, 143.9) 的朝北方面明显高于朝南方面 (春季 57.2, 143.9 和秋季 18.5, 48.2,分别）。春季和秋季夏季和冬季牧场的植物覆盖和植物密度在北坡上也大于朝南的坡度。坡向显着影响了两个牧场的物种多样性、植物组成和植物生命形式，主要是草本植物和地生植物。北坡的植被反应比朝南的斜坡大，这意味着在设计山地牧场恢复时，这一方面很重要。鉴于这种复杂性，土地管理者应在确定恢复目标和干预措施之前彻底评估目标地点的状况。