摘要
通过对杉木混合家系人工林生物量及其在各组分间分配变化规律的研究,获知洋口林场混合家系人工林林分总生物量8年、12年、16年、20年生时分别为92.855、154.819、217.128、234.876t·ha^(-1)。树干生物量在总生物量中比例随年龄增长而上升,枝叶比例于一定年龄阶段后变化不明显,根量随年龄增长比例下降,但绝对量到一定年龄阶段则保持不变。混合家系林与普通杉木林比较表明,在同等条件下,总生物量前者高于后者1～2倍;数量成熟龄推迟3～4年;根系分布及吸收范围亦比后者深而广。混合家系林生长优于普通杉木林,主要表现在20年生以前。表明混合家系杉木林比普通杉木林速生、丰产,更适合于培育速生丰产林。
According to the study on the biomass of Chinese fir mixed genealogy stand and the rule of the whole biomass distribution among different organs. The biomass of the mixed genealogy stands at the age of 8, 12, 16, 20 years for Yang Kou area was respectively 92. 855, 154. 819, 217. 128 and 234. 876 tons per hectare. The ratio of the bole biomass in the whole biomass increased with the age increasing. The ratio various of the branch leaves biomass in whole biomass was not obvious after some age stage. The ratio of root biomass in the whole biomass decreased with the age increasing, but the root biomass did not vary with the age after some age stage. The whole biomass of mixed genealogy stands was 1-2 times as higer as control stands under same condictions. The age of quantity mature of mixed genealogy stands was 3-4 years later than control stands. The range of distribution and absorb of mixed genealogy root systems were deeper and wider than control root systems. The growing diferent between mixed genealogy and control was not obvious after 20 years old. The mixed genealogy could be better suitable for fast growing and high yield plantation.
出处
《南京林业大学学报（自然科学版）》
CAS
CSCD
1992年第3期19-24,共6页
Journal of Nanjing Forestry University：Natural Sciences Edition
关键词
杉木
混合家系
生物量
人工林
Chinese fir
Mixed genealogy
Biomass
Plantation
