摘要
以大型丛生竹龙竹为研究对象,采用不同采伐(常规采伐、1/3丛采伐、1/2丛采伐、全丛采伐),分析丛状采伐对林下植被物种多样性恢复影响。结果表明:采伐方式很大程度上改变了林下植物丰富度,提高了物种多样性。伐前样地调查共计有植物39种,隶属于25科38属,伐后林下物种增多,恢复至第3年,物种共计植物71种,隶属于37科65属,总物种数较采伐前增加了82.05%。采伐方式对龙竹林下植物物种组成影响表现为1/2丛采伐>常规采伐>1/3丛采伐>全丛采伐。4种采伐试验区林下植被的物种多样性指数较高,以1/2丛采伐最优,常规采伐的次之,其次是1/3丛采伐,全丛采伐林下植物物种多样性最低。4种采伐试验区林下植物生物量随恢复时间增加而增加,以1/2丛采伐最高,且显著高于常规采伐和1/3丛采伐,全丛采伐最低。因此,1/2丛采伐综合各指标表现为林下植物物种多样性最优,在对龙竹林进行采伐经营时,可以将1/2丛采伐作为其林下生物多样性保护的参考实施采伐作业。
Dendrocalamus giganteus was used as the research object.Different methods(conventional selective logging,1/3 clump logging,1/2 clump logging,and whole clump logging)were used to explore the effect of clump logging on the recovery of understory vegetation species diversity.The results showed that logging has greatly changed the richness of understory plants and improved the species diversity.There were 39 species belonging to 38 genera of 25 families in the sample plots before logging.Understory species showed an overall increasing trend after logging,the number of species in the third year of recovery is the most,with 71 species of plants belonging to 65 genera of 37 families,and the total number of species has increased by 82.05%compared with the condition before logging.The effect of different clump logging on the species composition of understory plants was as follows:1/2 clump logging>conventional logging>1/3 clump logging>whole clump logging.The species diversity index of understory vegetation in 4 logging test areas is relatively high,specifically,the index of the 1/2 clump logging area being the largest,which was followed by that of conventional logging area.The index in 1/3 clump logging area was in the 3rd place,and the species diversity of understory vegetation in whole clump logging area was the lowest.In summary,the comprehensive indicators of 1/2 clump logging showed that the species diversity of understory plants was the best.Therefore,when logging D.giganteus forests,1/2 clump logging can be used as a reference for the protection of understory biodiversity.
作者
涂丹丹
辉朝茂
刘蔚漪
朱礼月
Tu Dandan;Hui Chaomao;Liu Weiyi;Zhu Liyue(Institute of Bamboo and Rattan/Engineering Research Center of Sympodial Bamboo,College of Forestry,Southwest Forestry University,Kunming Yunnan 650233,China)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2022年第6期11-18,共8页
Journal of Southwest Forestry University：Natural Sciences
基金
国家重点研发计划(2018YFD0600103,2016YFD0600902)资助
“云南滇南竹林生态系统定位观测研究站”监测经费资助
云南省三区人才项目资助
西南林业大学竹藤科学研究院运行经费资助。
关键词
龙竹
丛状采伐
物种多样性
生物量
恢复
Dendrocalamus giganteus
clump logging
species diversity
biomass
recovery
