Welcome to Bulletin of Botanical Research! Today is Share:

Bulletin of Botanical Research ›› 2017, Vol. 37 ›› Issue (6): 907-914.doi: 10.7525/j.issn.1673-5102.2017.06.014

Previous Articles     Next Articles

Leaf Traits of the Saplings of Later Successional Stage Tropical Montane Rain Forest in Hainan Island

ZHANG Ming1,2, LIU Fu-De3, AN Shu-Qing2, CAO Xue-Zhang1   

  1. 1. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042;
    2. School of Life Science, Nanjing University, Nanjing 210093;
    3. Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384
  • Received:2017-04-24 Online:2017-11-15 Published:2017-11-25
  • Supported by:
    Special Fund of National Environmental Protection for Non-profit Industry(201409055)

Abstract: Physiological and ecological characteristics of plant greatly affect its distribution pattern and abundance in ecosystem. The objectives of this study are to find differences of leaf traits between dominant species and companion species, and differences among three different layers. By sample-plot survey, leaf traits of six dominant species and nine companion species from three different layers of later successional stage tropical montane rain forest were measured in Hainan Island, by using a Li-6400 portable photosynthesis system. Leaves were sampled to measure its specific leaf area(SLA), leaf nitrogen(LN) and leaf phosphorus(LP). SLA(specific leaf area), A-mass(light-saturated photosynthetic rate) and Ф(photosynthetic quantum yields) of middle and upper layer species were higher than those of lower layer species, and the upper layer species had a lowest Rd(day-time dark respiration rate) among the three groups. LN and LP of saplings decreased with their mature tree height increasing, and had the order of lower layer species>middle layer species>upper layer species, but there was no significant differences among there groups(P>0.05). Photosynthetic parameters of dominant and companion species were correlated with SLA. LN of companion species was positively correlated with SLA(P<0.01), but their LP was negatively correlated with SLA(P<0.05). But for dominant species, there was no correlation between LN and SLA or LP and SLA(P>0.05).

Key words: tropical montane rain forest, later successional stage, dominant species, companion species, photosynthesis, specific leaf area, leaf nitrogen, leaf phosphorus

CLC Number: