摘要
运用异速生长分析法研究不同经营强度和竹龄下毛竹胸径与枝下高的关系的结果表明:(1)经营强度没有显著改变毛竹胸径与枝下高的异速生长关系,共同斜率为1.571,符合6/4模型,但在精细管理下,标准主轴SMA沿Y轴发生了显著移动(p<0.05),表明同胸径下精细管理毛竹枝下高更大。(2)不同竹龄下,1度、2度和3度的毛竹胸径与枝下高均呈现显著的异速生长关系(p<0.001);1度和3度的异速生长指数间差异不显著(p=0.190>0.05),共同斜率为1.552,而均与2度的异速生长指数差异显著(p<0.05),表现了竹林随着年龄变化出现胸径枝下高生长关系的交替变化现象。
The relationship between DBH and the height to crown base of Phyllostachys heterocycla in different management intensities and ages was studied by allometric growth analysis.The results showed that:(1)management intensity did not significantly change the allometric growth relationship between DBH and the height to crown base,the common slope was 1.571,which was consistent with the 6/4 model.However,under the refined management,the standard principal axis SMA moved significantly along the Y axis(p<0.05),indicating that under the same DBH,the height under the refined management of Moso bamboo is larger.(2)under different bamboo ages,there was a significant allometric growth relationship between DBH and the height to crown base of Phyllostachys heterocycla at 1,2 and 3-degree(p<0.001);there was no significant difference in allometric growth index between 1-degree and 3-degree(p=0.190>0.05),the common slope was 1.552,which was significantly different from that of 2-degree(p<0.05),the results showed that the growth relationship of DBH and the height to crown base changed with age.
作者
林康民
张铃铃
朱强根
赵超
周必铙
姚伟
LIN Kangmin(Faculty of Ecology,Lishui University,Zhejiang Lishui 323000)
出处
《林业科技》
2021年第6期22-24,共3页
Forestry Science & Technology
基金
国家级大学生创新创业训练项目(20190352008)
丽水市科技局高层次人才培养项目(2017R13)
中央财政林业科技推广示范资金([2019]TS16)。
关键词
毛竹
经营管理
竹龄
枝下高
异速生长
Bamboo
Management intensity
Bamboo age
The height to crown base
Allometric scaling analysis
作者简介
第1作者:林康民(2000-),男,在读本科生;通讯作者:朱强根(1975-),男,博士,副教授,从事竹林生态学研究。
