作 者：
王磊;何东进;游惠明;刘进山;蔡昌棠;游巍斌;肖石红;胡静;郑晓燕
单 位：
福建农林大学林学院;福建永安天宝岩国家级自然保护区
关键词：
长苞铁杉林;枯倒木;数量特征;天宝岩国家级自然保护区
摘 要：
对天宝岩国家级自然保护区长苞铁杉林不同海拔、不同腐烂等级枯倒木的径级结构、高度/长度分布,以及材积分布特征等进行了研究,结果表明:(1)天宝岩长苞铁杉林枯倒木主要由小径级木组成,且数量随着海拔的升高呈先降低后上升的趋势,中径级枯倒木所占比例呈现出先升高后降低的趋势,而大径级枯倒木数量最少;(2)枯倒木的高度/长度主要集中在1～6 m,随着高度/长度的增加,各海拔分布的枯倒木所占比例均减小;(3)不同腐烂等级枯倒木材积的变化趋势为Ⅲ>Ⅳ>Ⅱ>Ⅴ>Ⅰ;(4)不同径级枯倒木材积的分布呈现中径级较大,大径级次之,小径级较小的趋势。
译 名：
Quantitative characteristics of the dead logs of the rare and endangered Tsuga longibracteata forests
作 者：
WANG Lei1,HE Dongjin1,YOU Huiming1,LIU Jinshan2,CAI Changtang2,YOU Weibin1 XIAO Shihong1,HU Jing1,ZHENG Xiaoyan1(1.College of Forestry,Fujian Agriculture and Forestry University,Fuzhou 350002,China; 2.Tianbaoyan National Nature Reserve Fujian Province,Yong'an 366032,China)
关键词：
Tsuga longibracteata plantation;dead logs;quantitative characteristics;Tianbaoyan National Nature Reserve
摘 要：
The dynamic changes of diameter distribution,decay class,height/length distribution and volume distribution were studied in this paper.The results showed that:(1)The Tsuga longibracteata forests in Tianbaoyan National Nature Reserve was mainly composed of small-diameter dead logs which showed a reduction trend in diameter with altitude increasing.While mid diameter logs showed a downward trend in diameter with altitude increasing after the first increase with altitude increasing.And the amount of large diameter dead logs was the least.(2)The height/length ratio of dead logs mainly distributed at the range of 1-6 m.And with the height / length ratio increase,the proportion of dead logs in various altitude reduced.(3)The volume of dead logs in order was Ⅲ>Ⅳ>Ⅱ>Ⅴ>Ⅰ.(4)With the increase of diameter,the volume of dead logs was in order of mid diameter>large diameter>small diameter.
