Plant functional groups based on vegetative and reproductive traits in a subtropical forest community
Plant functional groups based on vegetative and reproductive traits in a subtropical forest community
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DOI：
10.1007/s10310-012-0376-8
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发表时间：
2013-12
影响因子：
1.5
通讯作者：
Haiyang Wang;Hong Chen
中科院分区：
文献类型：
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作者：
Haiyang Wang;Hong Chen
植物功能类型是研究植物群落结构和动态的基础。阔叶植物群落PFTs的评价标准尚未建立，关于PFTs与植物演替之间相关性的报道仍然很少。本研究旨在：(1)检测木本物种的哪些功能性状最能表征森林群落的pft特征；(2)探索功能性状随植物演替的总体趋势。摘要对中国西南亚热带森林中55种木本植物的结果枝进行了取样，记录了两组大小的功能性状，包括营养器官和生殖器官。对所研究的功能性状进行主成分分析（PCA），并采用k均值聚类对功能类型进行分组。其次，分析了PFTs与物种演替状态的关系。主成分分析结果表明，在所有功能性状中，小枝大小对该群落的性状组合和pft的表现影响最大，即在物种水平上，小枝大小可能是pft的重要决定因素。55种木本植物可分为3个不同的pft，其大小随物种演替的推进而增大。枝条大小与叶片大小相结合，果实大小与种子大小相结合。
Plant functional types (PFTs) are essential for us to research on community structure and dynamics. A proper criterion for assessing PFTs in a broad-leaved community is yet to be established, and the reports for correlations between PFTs and plant succession are still rare. The current study aimed to: (1) detect which functional trait(s) of woody species would best characterize PFTs in a forest community, and (2) explore general trends of functional traits with plant succession. We sampled fruit-bearing twigs of 55 woody species in a subtropical forest in southwest China, and recorded two sets of sizes of functional traits including both vegetative and reproductive organs. A principal components analysis (PCA) was performed on the functional traits studied, and the functional types were grouped out withK-means clustering. Next, the relationship between PFTs and species succession status was examined. The PCA revealed that of all the functional traits studied, twig sizes may exert a greatest impact on the traits assemblages and PFTs' performances in this community, i.e., twig size may act as an important determinant for PFTs at the species level. The 55 woody species were classified into three distinct PFTs whose sizes tended to increase with the advance of species succession. Twig size tended to combine with leaf size, and so was the fruit size with seed size.