高寒森林倒木在不同分解阶段的质量变化

常晨晖, 吴福忠, 杨万勤, 谭波, 肖洒, 李俊, 苟小林

Changes in log quality at different decay stages in an alpine forest

CHANG Chen-Hui,WU Fu-Zhong,YANG Wan-Qin,TAN Bo,XIAO Sa,LI Jun,GOU Xiao-Lin

表1 研究样地基本情况

Table 1 General description of the study sites

项目 Item 基本特征 Basic characteristics 坡度 Slope degree 35° 坡向 Slope aspect NE 45° 海拔 Altitude (m) 3 582 树种组成 Species composition 该林分内岷江冷杉断面积占80%, 方枝柏断面积占林分断面积的20%, 红桦和四川红杉断面积均介于林分总断面积2%-5%。 The proportion of Abies faxoniana basal area to total stand basal area is 80%, and the proportion of Sabina saltuaria basal area to total stand basal area is 20%, while the proportion of the basal area for Betula albosinensis and Larix mastersiana to total stand basal area varied between 2%-5%. 林分蓄积 Stand volume (t·hm-2) 337.31 粗木质残体储量 Coarse woody debris volume (t·hm-2) 53 土壤特征 Soil characteristics 雏形土, 土层浅薄, 土体为腐殖质层到母质层的过渡土层。 Soil type is cambisols, with shallow soil depth and tendency of transition from humus layer to parent material layer.