摘要
在伏牛山南麓栓皮栎群落内设置30块样地,对物种组成、多样性及环境因子进行了系统调查,采用RDA和偏RDA排序法分析了环境因子对群落物种组成的影响,多元线性逐步回归分析探讨了群落物种多样性与环境因子的关系。结果表明:6个环境因子共解释了栓皮栎群落物种组成变异的45.38%,其中坡向和土壤碱解氮含量的净效应达显著水平(P<0.05),为影响物种组成的主要环境因子;作为建群种的栓皮栎在热干坡向、土壤碱解氮含量低的生境有最多的分布;坡向、枯落物厚度、灌木盖度、土壤pH和碱解氮含量能够显著(P<0.05)影响栓皮栎群落的物种多样性,较冷湿坡向、枯落物较厚、灌木盖度较高、土壤酸度较大且碱解氮含量丰富的生境具有较高的物种多样性。
In this study,30 typical plots were set up in Quercus variabilis community at the foot of Funiu mountain in China.The species composition,diversity,and environmental factors were systematically investigated.Redundancy analysis(RDA)and partial RDA were employed to elucidate the main environmental factors influencing species composition,and multiple linear stepwise regression analysis to explore the major factors driving species diversity.The results showed that 6 environmental factors totally explained 45.38%of the species composition variation of Q.variabilis community.The net effects of aspect and alkali-hydrolyzable nitrogen content on species composition reached a significant level(P<0.05),which were the main environmental factors influencing species composition.The Q.variabilis,as an edificator,was dominant in the habitat with hotter dry aspect and alkali-hydrolyzable nitrogen content poor-soil.Aspect,shrub coverage,soil pH and alkali-hydrolyzable nitrogen content were the most important(P<0.05)environmental factors explaining the variation in species diversity.The habitat with colder wet aspect,thicker litter,higher shrub coverage,higher soil acidity and rich alkali-hydrolyzable nitrogen content had higher species diversity.
作者
陈玉婷
王菁华
张慧
燕怡帆
朱雅
崔志鹏
任学敏
Chen Yuting;Wang Jinghua;Zhang Hui;Yan Yifan;Zhu Ya;Cui Zhipeng;Ren Xuemin(College of Life Science and Agricultural Eengineering,Nanyang Normal University,Nanyang Henan 473061,China;Key Laboratory of Ecological Security for Water Source Region of Mid-line Project of South-to-North Diversion Project of Henan Province,Nanyang Henan 473061,China)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2023年第3期79-86,共8页
Journal of Southwest Forestry University：Natural Sciences
基金
国家科技基础性工作专项重点项目(2007FY110800)资助。
关键词
栓皮栎
群落
物种多样性
RDA排序
环境因子
伏牛山
Quercus variabilis
community
species diversity
RDA ordination
environmental factor
Funiu Mountain
