南岳衡山宅基迹地毛竹扩张过程研究  

Study on the expansion of Phyllostachys edulis forest in the abandoned homestead land in Nanyue Hengshan

作　　者：曾掌权[1] 李明红 杨蕊[1] 张灿明 匡代勇 阳清 ZENG Zhangquan;LI Minghong;YANG Rui;ZHANG Canming;KUANG Daiyong;YANG Qing(Hunan Academy of Forestry,Hengshan Research Station of Forest Ecosystem,Changsha 410004,China;Hunan Hengshan National Nature Reserve Administration,Hengyang 421999,China;Water Resources Research&Development Center,Changsha 410013,China)

机构地区：[1]湖南省林业科学院,湖南衡山森林生态系统定位观测研究站,湖南长沙410004 [2]湖南南岳衡山国家级自然保护区管理局,湖南南岳421999 [3]湖南水资源研究和利用合作中心,湖南长沙410013

出　　处：《湖南林业科技》2019年第5期68-71,共4页Hunan Forestry Science & Technology

基　　金：湖南省林业科技计划(XLK201806,XLK201925);国家林业科技发展项目(KJZXSA2018011,KJZXSA2019009);国家林业科技创新平台运行补助项目(2018-LYPT-DW-064)

摘　　要：为了获知毛竹在宅基迹地的扩散过程,本研究定位观测了南岳衡山宅基迹地毛竹扩散过程的扩张速度、立竹度、胸径及笋死亡率。结果发现,毛竹2003—2018年共扩张83.2 m,平均扩张速度为5.2 m·a^-1,扩张速度随年份的增加而递减。立竹度随着扩散距离增加而增加,2003—2015年,立竹度由110株·hm^-2增加到2 060株·hm^-2左右,2015年后立竹度基本稳定在2 100株·hm^-2,立竹度在达到稳定前呈线性上升。2003—2005年,立柱胸径基本稳定在5 cm左右,2006—2010年,立竹胸径逐年增加到10 cm,并基本保持到2014年,2015年以后立竹胸径增加到12 cm左右。竹笋死亡率随扩张的年份增加而递减,2003—2015年,竹笋死亡率从55%降到15%,到2018年,竹笋死亡率基本稳定在10%。In order to explore the expansion process of Phyllostachys edulis population in the abandoned homestead land,the expansion speed,the bamboo density,DBH and bamboo shoot mortality rate of the Phyllostachys edulis in Nanyue were investigated and studied.The results showed that the Phyllostachys edulis forest expanded 83.2 m from 2003 to 2018,and the average expansion speed was 5.2 m·a^-1.The expansion speed decreased with the increase of the year.The bamboo density increased with the increase of the diffusion distance,which climbed from 110 plant·hm^-2 in 2003 up to 2060 plant·hm^-2 in 2015 with linear increase and remained unchanged with 2 100 plant·hm^-2 after 2015.From 2003 to 2005,DBH was basically stable at about 5cm.From 2006 to 2010,DBH gradually increased to 10 cm and remained unchanged to 2014.After 2015,DBH climbed up to about 12 cm.The mortality rate of Phyllostachys edulis shoots also decreased with the increase of the year of expansion.From 2003 to 2015,the mortality rate decreased from 55%to 15%.Till 2018,the mortality rate was basically stable at 10%.

关 键 词：毛竹 扩张 立竹度 胸径 

分 类 号：S795.7[农业科学—林木遗传育种]