文献类型：期刊文献

英文题名：Dominant Species in Subtropical Forests Could Decrease Photosynthetic N Allocation to Carboxylation and Bioenergetics and Enhance Leaf Construction Costs during Forest Succession

作者：Xiao, Yihua[1] Liu, Shirong[2] Tong, Fuchun[3] Chen, Bufeng[1] Kuang, Yuanwen[4,5]

第一作者：肖以华

通信作者：Liu, SR[1];Kuang, YW[2];Kuang, YW[3]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou, Guangdong, Peoples R China;[2]Chinese Acad Forestry, Chinas State Forestry Adm, Inst Forest Ecol Environm & Protect, Key Lab Forest Ecol & Environm, Beijing, Peoples R China;[3]South China Agr Univ, Coll Forestry & Landscape Architecture, Guangzhou, Guangdong, Peoples R China;[4]Chinese Acad Sci, South China Bot Garden, Key Lab Vegetat Restorat & Management Degraded Ec, Guangzhou, Guangdong, Peoples R China;[5]Chinese Acad Sci, South China Bot Garden, Guangdong Prov Key Lab Appl Bot, Guangzhou, Guangdong, Peoples R China

年份：2018

卷号：9

外文期刊名：FRONTIERS IN PLANT SCIENCE

收录：;Scopus(收录号：2-s2.0-85043340905);WOS:【SCI-EXPANDED(收录号:WOS:000424443300001)】；

基金：This study was jointly supported by the National Natural Science Foundation of China (No. 31290223), the Central Non-profit Research Institution of Chinese Academy of Forestry (CAFYBB2016MA003), Natural Science Foundation of Guangdong Province, China (2016A030313139), and the Biological Resources Service Network Initiative of Chinese Academy of Sciences (ZSSD-007).

语种：英文

外文关键词：leaf construction cost; photosynthesis; nitrogen allocation; specific leaf area; forest succession

摘要：It is important to understand how eco-physiological characteristics shift in forests when elucidating the mechanisms underlying species replacement and the process of succession and stabilization. In this study, the dominant species at three typical successional stages (early-, mid-, and late-succession) in the subtropical forests of China were selected. At each stage, we compared the leaf construction costs (CC), payback time (PBT), leaf area based N content (N-A), maximum CO2 assimilation rate (P-max), specific leaf area (SLA), photosynthetic nitrogen use efficiency (PNUE), and leaf N allocated to carboxylation (N-C), and to bioenergetics (N-B). The relationships between these leaf functional traits were also determined. The results showed that the early-succession forest is characterized with significantly lower leaf CC, PBT, NA, but higher Pmax, SLA, PNUE, N-C, and N-B, in relation to the late-succession forest. From the early- to the late succession forests, the relationship between Pmax and leaf CC strengthened, whereas the relationships between N-B, N-C, PNUE, and leaf CC weakened. Thus, the dominant species are able to decrease the allocation of the photosynthetic N fraction to carboxylation and bioenergetics during forest succession. The shift in these leaf functional traits and their linkages might represent a fundamental physiological mechanism that occurs during forest succession and stabilization.