Page 82 - 《广西植物》2023年第5期
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8 6 2 广 西 植 物 43 卷
表 2 试验林立竹秆形特征
Table 2 Culm form characteristics of bamboo in experimental forest
胸径
立竹龄级 相对枝下高 相对全高 壁厚率 扁圆率 分枝率
试验林类型 Diameter at
Bamboo age Relative height Relative Wall thickness Oblate ratio Branching rate
Stand type breast height
(a) under branch full height ratio (%) (%) (%)
(mm)
苦竹林中心区 1 50.14±6.34Ab 86.82±19.83Aa 207.19±17.50Aa 29.63±3.67Aa 95.63±2.58Aa 62.46±6.68Ab
AF
2 48.98±2.99Aab 78.34±14.48Aa 206.36±15.26Aa 30.04±4.60Aa 94.15±3.65Aa 60.76±6.28Ab
苦竹林界面区 1 51.35±5.19Ab 70.86±17.96Aab 207.45±17.20Aa 27.21±2.18Aab 95.11±1.68Aa 63.65±7.45Ab
BA
2 43.53±5.21Bb 79.28±17.70Aa 206.05±10.58Aa 28.94±2.16Aab 95.64±3.26Aa 63.20±5.78Aab
混交林界面区 1 51.62±4.76Ab 62.71±20.63Ab 204.75±11.72Aa 24.29±6.01Ab 96.10±1.50Aa 67.43±5.44Aab
BM
2 44.63±6.61Bb 75.12±29.04Aa 214.45±19.69Aa 27.60±2.06Aab 96.61±2.62Aa 64.22±5.54Aab
混交林中心区 1 65.86±3.98Aa 58.30±15.46Ab 182.87±11.10Ab 23.66±5.99Ab 95.15±3.47Aa 73.03±6.87Aa
MF
2 52.53±4.49Ba 69.03±20.29Aa 187.98±17.02Ab 26.05±1.98Ab 96.79±1.78Aa 67.01±6.07Aa
注: 大写字母不同表示同一处理不同龄级间差异显著ꎬ小写字母不同表示同一龄级不同处理间差异显著(P<0.05)ꎮ 下同ꎮ
Note: Different uppercase letters indicate significant differences between different ages in the same treatmentꎬ and different lowercase letters
indicate significant differences between different treatments in the same age at 0.05 level. The same below.
表 3 试验林立竹地上构件生物量
Table 3 Aboveground module biomass of bamboo in experimental forest
构件生物量 构件相对生物量
 ̄1
Module biomass (g) Relative module biomass (gmm )
试验林 立竹龄级
类型 Bamboo age
Stand type (a) 秆 枝 叶 总生物量 秆 枝 叶 总生物量
Total Total
Culm Branch Leaf Culm Branch Leaf
biomass biomass
苦竹林中心区 1 2 196.59± 156.66± 67.95± 2 421.20± 43.32± 3.09± 1.35± 47.77±
AF 538.33Bbc 40.50Bb 16.35Bb 582.64Bbc 5.87Bb 0.55Bb 0.28Ba 6.29Bb
2 3 240.32± 377.95± 328.24± 3 946.52± 66.05± 7.68± 6.68± 80.41±
399.26Aa 98.87Aab 98.15Ab 581.35Aa 6.11Aa 1.88Aa 1.90Ab 9.63Aa
苦竹林界面区 1 2 581.09± 203.54± 75.63± 2 860.27± 50.11± 3.94± 1.46± 55.51±
BA 365.97Ab 61.49Ba 18.26Bab 425.68Ab 2.74Ba 0.99Ba 0.28Ba 3.60Ba
2 2 481.43± 359.47± 401.02± 3 241.93± 56.60± 8.36± 9.26± 74.22±
471.3 Abc 45.69Ab 67.36Aa 525.07Abc 4.46Ab 1.39Aa 1.39Aa 4.43Aab
混交林界面区 1 1 967.00± 150.63± 34.81± 2 152.44± 38.16± 2.91± 0.67± 41.74±
BM 160.60Bc 27.54Bb 7.59Bc 186.30Bc 1.40Bc 0.40Bb 0.11Bb 1.48Bc
2 2 411.19± 348.95± 353.49± 3 113.63± 53.50± 7.84± 7.93± 69.26±
539.18Ac 52.70Ab 59.72Aab 636.10Ac 4.29Ab 0.71Aa 0.86Aab 4.59Ab
混交林中心区 1 3 511.94± 230.54± 86.92± 3 829.40± 53.39± 3.50± 1.32± 58.20±
MF 267.66Aa 23.08Ba 12.50Ba 283.99Aa 3.66Aa 0.21Bab 0.18Ba 3.70Ba
2 2 956.13± 436.15± 369.04± 3 761.33± 56.20± 8.30± 7.05± 71.55±
316.84Bab 51.54Aa 40.79Aab 379.50Aab 2.54Ab 0.65Aa 0.80Ab 3.03Ab
异ꎻAF 和 BM 中立竹的秆和总生物量均显著升高ꎬ 交林方向ꎬ1 a 立竹各构件生物量和构件相对生物
而 MF 中立竹的秆生物量显著降低ꎮ 苦竹林至混 量均呈“ N” 型变化趋势ꎬ 且 BA 处理均显著高于