色季拉山不同腐解等级华山松倒木上的苔藓植物组合

刘凌, 樊英杰, 宋晓彤, 李敏, 邵小明, 王晓蕊

Bryophyte societies on the fallen logs of Pinus armandii with different decay classes in Sygera Mountains

LIU Ling, FAN Ying-Jie, SONG Xiao-Tong, LI Min, SHAO Xiao-Ming, WANG Xiao-Rui

表1 色季拉山4株倒木基本信息

Table 1 Essential information of the four fallen logs in Sygera Mountains

倒木 Fallen log 倒木1 Log 1 倒木2 Log 2 倒木3 Log 3 倒木4 Log 4 针叶 Needle 存在 Present 无 Absent 无 Absent 无 Absent 树皮 Bark 与活体无显著区别 No difference from living 少部分脱落 Partial shedding 仅在粗大树枝上残存 Partly present only on large branches 无 Absent 树枝 Branches and twig 小树枝均存在 Twigs present 中等树枝存在 Branches present 粗大树枝存在 Large branches present 仅粗大树枝基部存在 Only large branches stub present 主干形状 Bole shape 圆形 Round 圆形 Round 圆形 Round 圆形至卵形 Round to oval 与地面位置 Position of log on ground 被某点抬高 Elevated on support point 被某点抬高 Elevated on support point 接近地面 Near or on the ground 整体落在地面 All of log on the ground 结构完整性 Structural integrity 木质体新鲜, 刀片可刺进 1-2 mm Cambium still fresh, knife blade penetrates 1-2 mm 开始腐解, 刀片可刺进 3 mm到1 cm Cambium decayed, knife blade penetrates 3 mm to 1 cm 刀片可刺进约2 cm Knife blade penetrates less than 2 cm 严重腐烂, 刀片可刺进 2-5 cm Severely decay, knife penetrates 2-5 cm 腐解等级 Decay class Ⅰ Ⅱ Ⅲ Ⅳ 胸径 Diameter at breast height 35 cm 23 cm 32 cm 27 cm 倒伏方向 Loging direction 南偏东15° 15° south by east 南偏东25° 25° south by east 南偏东15° 15° south by east 南偏东10° 10° south by east 倒木位置 Position of log 林窗中心 Center of forest gap 林窗中心 Center of forest gap 林内 Under the forest 林窗边缘* Edge of forest gap* 遮阴程度 Shade degree 10% 50% 90% 60%*