文献类型：期刊文献

英文题名：Understanding Community Assembly Based on Functional Traits, Ontogenetic Stages, Habitat Types and Spatial Scales in a Subtropical Forest

作者：Li, Yanpeng[1,2,3] Bin, Yue[1,3] Xu, Han[4] Ni, Yunlong[1,2,3] Zhang, Ruyun[1,2,3] Ye, Wanhui[1,3] Lian, Juyu[1,3]

第一作者：Li, Yanpeng

通信作者：Lian, JY[1];Lian, JY[2]

机构：[1]Chinese Acad Sci, South China Bot Garden, Key Lab Vegetat Restorat & Management Degraded Ec, Guangzhou 510650, Peoples R China;[2]Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China;[3]Chinese Acad Sci, South China Bot Garden, Guangdong Prov Key Lab Appl Bot, Guangzhou 510650, Guangdong, Peoples R China;[4]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China

年份：2019

卷号：10

期号：12

起止页码：1-16

外文期刊名：FORESTS

收录：;EI(收录号：20201508396576);Scopus(收录号：2-s2.0-85082802612);WOS:【SCI-EXPANDED(收录号:WOS:000507288400005)】；

基金：This research was funded by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB31030000), the National Key R&D Program of China (grand No. 2017YFC0505802), National Natural Science Foundation of China (No. 41371078) and Chinese Forest Biodiversity Monitoring Network.

语种：英文

外文关键词：trait dispersion; environmental filtering; biotic interactions; habitat types; ontogenetic stages; spatial scales

摘要：Community assembly in natural communities is commonly explained by stochastic and niche-based processes such as environmental filtering and biotic interactions. Many studies have inferred the importance of these processes using a trait-based approach, however, there are still unknowns around what factors affect the importance of different assembly processes in natural communities. In this study, the trait dispersion patterns of 134 species were examined across different functional traits, habitat types, ontogenetic stages and spatial scales from a 20-ha Dinghushan Forest Dynamic Plot in China. The results showed that (1) functional traits related to productivity such as specific leaf area and leaf area mainly showed functional clustering, indicating these two functional traits were more affected by environmental filtering. However, trait dispersion patterns depended on more than the ecological significances of functional traits. For example, trait dispersions of leaf dry matter content, leaf thickness and maximum height did not show consistent patterns across habitat types and ontogenetic stages, suggesting more complex mechanisms may operate on these traits; (2) the trait dispersion varied with the habitat types and ontogenetic stages. Specifically, we found that habitat types only affected the strength of trait dispersions for all the five traits, but ontogenetic stages influenced both the strength and direction of trait dispersions, which depended on the traits selected; (3) the relative importance of soil, topography and space to trait dispersion varied with ontogenetic stages. Topography and space were more important for trait dispersion of saplings but soil was more important for trait dispersion of adults; (4) biotic interactions dominated community assembly at smaller spatial scales but environmental filtering dominated community assembly at larger spatial scales. Overall, the results highlight the importance of functional traits, habitat types, ontogenetic stages and spatial scales to community assembly in natural communities.