透光抚育对长白山“栽针保阔”红松林植被碳储量影响  

Effect of Liberation Cutting on the Vegetation Carbon Storage of Korean Pine Forests by Planting Conifer and Reserving Broad-leaved Tree in Changbai Mountains of China

作　　者：牟长城[1] 庄宸[1] 韩阳瑞[1] 张晓亮[1] 佟静秋[1] 程家友 曹万亮[3] 

机构地区：[1]东北林业大学生态研究中心,哈尔滨150040 [2]吉林省白河林业局,延吉133613 [3]吉林省敦化林业局,延吉133700

出　　处：《植物研究》2014年第4期529-536,共8页Bulletin of Botanical Research

基　　金：国家自然科学基金(31370461);"十二五"农村领域国家科技计划项目(2012BAB21B0202-03)

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±4．90t·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±7．22g·kg-1）、灌木层（454．87±9．82—474．52±5．82g·kg-1）、草本层（401．24±8．65-419．52±7．98g·kg。）和凋落物层（348．91±13．21～376．03±12．36g·kg。）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±2．98t·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。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 5.5% - 3.6% （ P 〈 0.05 ）, but the carbon concentrations of branches and leaves from Pinus koraiersis 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- intens

关 键 词：长白山 “栽针保阔”红松林 植被碳储量 透光抚育 

分 类 号：S153.6[农业科学—土壤学]