【摘要】 选取１２个样方，调查了高山灌丛生物量和营养元素含量随海拔、坡向和坡度的变化状况。头花杜鹃、高山柳和草本植物分别在海拔３５００ｍ、３６１０ｍ和３６２０ｍ达到其生物量的最大值；高山植物的根／茎比随海拔升高而增大；西坡高山灌丛的生物量大于南坡；坡度对高山灌丛生物量在各器官中的分配影响较大；海拔高度、坡向和坡度对高山植物营养元素含量的影响不明显。更多还原

【Abstract】 Effects of elevation,slope and exposure on biomass and nutrient contents of alpine brushes were investigated at 12 sample stands. The biomass maximum of Rhododendron capitatum Maxim, Salix cupularis Rehd. and herbs appeared at elevations of 3500m, 3610m and 3 620m respectively. The ratio of root to stem of alpine plants increased with elevation.The biomass of alpine brushes at west exposure was greater than that at south exposure.Biomass distribution in organs of alpine brushes was greatly influenced by slope. Elevation, slope and exposure had no obvious effect on the nutrient contents of alpine plants.更多还原