---

作 者 ：牟长城;庄宸;韩阳瑞;张晓亮;佟静秋;程家友;曹万亮

期 刊 ：植物研究 2014年 34卷 4期 页码：529-536

关键词：长白山；栽针保阔红松林；植被碳储量；

Keywords:Changbai Mountains, korean pine forests with planting conifer and reserving broad-leaved tree, vegetation carbon storage, liberation cutting,

摘 要 ：运用采伐试验与相对生长方程法，设定5个处理，分别为：未透光（对照）、轻度择伐（25%）、中度择伐（50%）、强度择伐（75%）、全透光（100%）（抚育强度指蓄积量采伐比例）研究了透光抚育对长白山“栽针保阔”红松林的植被碳储量。结果表明：①透光抚育使其植被生物量（154.86±9.84~217.56±4.90 t·hm^-2）显著降低，轻、中、强度择伐降低幅度相对较大且相近（21.1%~28.8%），全透光降低幅度相对较小（12.5%）；②透光抚育对其乔木层（404.53±1.28~479.64±7.22 g·kg^-1）、灌木层（454.87±9.82~474.52±5.82 g·kg^-1）、草本层（401.24±8.65~419.52±7.98 g·kg^-1）和凋落物层（348.91±13.21~376.03±12.36 g·kg^-1）碳含量的影响并不同，降低了红松、家榆、紫椴树干碳含量（2.3%~6.1%，P<0.05）和蒙古栎、紫椴与家榆树枝与树叶碳含量（2.6%~12.7%，P<0.05）及灌木层碳含量（3.5%~3.6%，P<0.05），但提高了红松树枝与树叶碳含量（5.4%~7.7%，P<0.05）；③透光抚育使其植被碳储量（68.38±1.78~97.40±2.98 t·C/hm^-2）显著降低，轻、中、强度择伐降低幅度相对较大且相近（22.5%~29.8%），全透光降低幅度最小（16.1%）。因此，从维持其植被碳库考虑，对长白山“栽针保阔”红松林采取中低强度择伐或小范围上层全透光方式比较适宜。

Abstract:The effects of liberation cutting on the vegetation carbon storage of the 33-year-old Korean pine forests by planting conifer and reserving broad-leaved tree was studied by using crown thinning control test method in Changbai Mountains of China. Five levels of cutting intensities were taken, which were non-selective cutting(control), low-intensity selective cutting(25%), moderate-intensity selective cutting(50%), heavy-intensity selective cutting(75%) and clear cutting(100%)(cutting intensity refer to volume percent). The results showed that: (1)Liberation cutting made its vegetation biomass (154.86±9.84-217.56±4.90 t·hm^-2) significantly decrease by 12.5%-28.8%(P<0.05), in which low-intensity, moderate-intensity and heavy-intensity selective cutting decreased by 21.1%-28.8%, while, clear cutting only decreased by 12.5%; (2)Liberation cutting had different effects on the carbon concentration of tree layer (404.53±1.28-479.64±7.22 g·kg^-1), shrub layer (454.87±9.82-474.52±5.82 g·kg^-1), herb layer(401.24±8.65-419.52±7.98 g·kg^-1) and litter fall layer (348.91±13.21-376.03±12.36 g·kg^-1) of the Korean pine forests. The carbon concentrations of trunk from Pinus koraiensis, Ulmus pumila and Tilia amurensis significantly decreased by 2.3%-6.1% (P<0.05), the carbon concentrations of branches and leaves from Quercus mongolica, Ulmus pumila and Tilia amurensis significantly decreased by 2.6%-12.7%(P<0.05), the carbon concentration of shrub layer significantly decreased by 3.5%-3.6%(P<0.05), but the carbon concentrations of branches and leaves from Pinus koraiensis significantly increased by 5.4%-7.7%(P<0.05); (3)Liberation cutting made its vegetation carbon storage (68.38±1.78-97.40±2.98 t·C·hm^-2) significantly decrease by 16.1%-29.8%(P<0.05), in which low-intensity, moderate-intensity and heavy-intensity selective cutting decreased by 22.5%-29.8%, while, clear cutting only decreased by 16.1%. Therefore, in order to sequestrate carbon, low-intensity, moderate-intensity selective cutting and small-scale clear cutting should be taken for the Korean pine forests by planting conifer and reserving broad-leaved tree.

---