杜香-兴安落叶松渐伐中龄林粗木质残体特征研究  

CHARACTERISTICS OF SUCCESSIVE CUTTING MIDDLE- AGE FOREST COARSE WOODY DEBRIS IN Ledum palustre-Larix gmelinii FOREST IN DAXING'ANLING MOUNTAINS

作　　者：王飞[1] 张秋良[1] 高孝威[1] 王硕韬 

机构地区：[1]内蒙古农业大学林学院,呼和浩特010019

出　　处：《内蒙古农业大学学报（自然科学版）》2013年第5期65-69,共5页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：国家林业公益性行业专项基金(201304308)

摘　　要：以大兴安岭杜香-兴安落叶松林为研究对象,分析渐伐中龄林木质物残体的贮量及组成,比较两类标准计算的粗木质残体贮量、径级结构及腐烂特征。结果表明:WD生物量为16.94t·hm-2,以Harmon标准计算的CWD(D≥2.5 cm)体积和生物量为35.45m3·hm-2,分别比LTER标准高出31.80%和34.70%。倒木在CWD中的密度比例(96.70%)远大于体积和生物量比例(56.24%,61.74%),枯立木比例最小。CWD密度以2.5-10cm为主(占96.7%),体积和生物量则以大于20 cm的CWD为主。CWD由白桦和落叶松组成,以落叶松为主,占67%以上。The stage and composition of the successive cutting middle - age forest woody debris and the storage , the diameter at breast height class composition and the characteristics of decay of coarse woody debris were studied in a Ledum - palustre - Lar/x gmeli- nii forest in Daxing^mling Mountains. The result shows that CWD biomass is 16.94 t hm-1 ,the volume and biomass of CWD （D~〉 2. 5 cm） derived from Harmon criterion were 35.45m3 hm-2 ,which were higher than that derived from LTER criterion by 31.80% and 34. 70%, respectively, the proportions of Fallen wood in the CWD density（96. 70% ） is much larger than the volume（56. 24% ） and the biomass（ 61. 74% ）, in which the smallest proportions is snag. the CWD density focus on 2. 5 - 10 cm （96.7%） , the CWD volume and biomass focus on more than 20cm. The population is composed of Larix gmelinff and Betula platyphylla. The proportions of density, volume and biomass of Lar/x gmelinii were above 67%.

关 键 词：兴安落叶松 渐伐林 木质物残体 

分 类 号：S718.55[农业科学—林学]