华北地区落叶松林的分布、群落结构和物种多样性

方文静,蔡琼,朱江玲,吉成均,岳明,郭卫华,张峰,高贤明,唐志尧,方精云

Distribution, community structures and species diversity of larch forests in North China

FANG Wen-Jing,CAI Qiong,ZHU Jiang-Ling,JI Cheng-Jun,YUE Ming,GUO Wei-Hua,ZHANG Feng,GAO Xian-Ming,TANG Zhi-Yao,FANG Jing-Yun

表5 华北地区3种落叶松林中优势种的胸径、树高结构

Table 5 Diameter at breast height (DBH) and height structure of dominant species in three larch forests in North China

胸径/树高 DBH/Height 优势种 Dominant species 数量 Number 均值±标准偏差 Mean ± SD 最小值-最大值 Min-Max 偏度系数 Skewness 峰度系数 Kurtosis 胸径 DBH (cm) 华北落叶松(人工林) LPF (PF) 4 251 15.1 ± 6.4d 3.0-36.2 0.2 2.2 华北落叶松(天然林) LPF (NF) 4 464 18.0 ± 7.5c 3.0-75.8 0.7 4.4 日本落叶松(人工林) LKF (PF) 1 463 20.7 ± 8.4a 3.2-56.0 0.8 3.7 太白红杉(天然林) LCF (NF) 1 278 19.5 ± 9.8b 3.0-80.0 0.8 4.5 所有天然林 All natural forest 5 742 18.3 ± 8.1a 3.0-80.0 0.8 4.8 所有人工林All planted forest 5 714 16.5 ± 7.4b 3.0-56.0 0.7 3.8 树高 Height (m) 华北落叶松(人工林) LPF (PF) 4 251 11.3 ± 4.2c 2.2-35.5 0.6 3.6 华北落叶松(天然林) LPF (NF) 4 464 12.3 ± 4.3b 2.0-30.0 0.3 3.2 日本落叶松(人工林) LKF (PF) 1 463 17.6 ± 8.2a 2.3-39.5 0.6 2.8 太白红杉(天然林) LCF (NF) 1 278 9.1 ± 4.8d 2.0-30.0 2.0 8.2 所有天然林 All natural forest 5 742 11.6 ± 4.6b 2.0-30.0 0.6 3.6 所有人工林 All planted forest 5 714 12.9 ± 6.1a 2.2-39.5 1.4 5.6