西北林学院学报2012，Vol.27Issue(2)：169-174,6.DOI:10.3969/j.issn.1001-7461.2012.02.34
长白山天然云冷杉异龄林林分结构动态变化研究
Dynamic Change of Spruce-fir Natural Forests in Changbai Mountain
摘要
Abstract
A fixed sampling plot of spruce-fir natural forest with an area of 0. 2 hectare in Changbai Mountain in Northeast China was selected to collect data for 11 times during 1986 to 2008 to examine the dynamic changes in stand structure. All of the trees bigger than 5 cm DBH were measured and the mortalities, the recruitment and the additions were recorded. The results demonstrated that the stand had a 2. 96% o-verall increase in density and a 3. 78% overall increase in basal area. Coniferous species basal area property overall declined and broad-leaved species basal area property overall increased. The stand proportion of coniferous and broad-leaved remained in a stable proportion of 5 : 5. The maximum density species change Abies nephrolepis into Picea koraiensis. A. nephrolepis density declined from 180 N/hm2 into 160 N/hm2 but P. koraiensis density increased from 125 N/hm2 into 160 N/hm2. Tilia amurensis remained the maximum basal area species and it had a 33. 92% increase. The diameter distribution remained an inverse J-shaped curve between 1986 and 2008. A. nephrolepis and Acer tegmentosum were all bell shaped. Pinus koraiensis , Tilia amurensis , Picea koraiensis were all had an inverse J-shaped curve. The density declined in small diameter individual but increased in middle and big diameter individual. The tree ≥5 DBH recruitment and died species all focused in A. tegmentosum and P. koraiensis throughout the study. The long-term outlook for the P. koraiensis is uncertain due to its high regeneration, high mortality rate and high recruitment. The diameter mortality rate sharply decreased when the diameter increase. The tree age in the stand ranged from 15 to 197, the average stand age is 78. 4. The species average age is P. koraiensis> A. Nephrolepis>Tilia amurensis> A. Tegmentosum>P. Koraiensis.关键词
云冷杉林/结构特征/动态变化Key words
spruce-fir natural forest/ structure character/ change分类
农业科技引用本文复制引用
宁杨翠,郑小贤,蒋桂娟,杜燕,罗梅..长白山天然云冷杉异龄林林分结构动态变化研究[J].西北林学院学报,2012,27(2):169-174,6.基金项目
林业公益性行业科研专项“我国典型森林类型健康经营关键技术研究”(20100400203). （20100400203）
