Chin J Plan Ecolo ›› 2011, Vol. 35 ›› Issue (7): 687-698.doi: 10.3724/SP.J.1258.2011.00687

• Research Articles •     Next Articles

Within-leaf allometric relationships of mature forests in different bioclimatic zones vary with plant functional types

ZHU Jie-Dong1,2, MENG Ting-Ting1, NI Jian1*, SU Hong-Xin1, XIE Zong-Qiang1, ZHANG Shou-Ren1, ZHENG Yuan-Run1  and XIAO Chun-Wang1   

  1. 1State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China;

    2GraduateUniversity of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2011-03-31 Revised:2011-05-07 Online:2011-08-18 Published:2011-07-01
  • Contact: NI Jian E-mail:jni@ibcas.ac.cn

Abstract:

Aims Our objectives are to determine allometric relationships between petiole mass and lamina mass, area, and volume in different bioclimatic zones and to detect the effect of plant functional types on the relationships.
Methods Typical and zonal mature forests were selected from boreal Huzhong, temperate Changbai Mountain, warm-temperate Dongling Mountain, subtropical Gutian Mountain, Shennongjia and Dujiangyan in China, and one 1 hm2 plot was investigated at each site. Traits of lamina and petiole of the dominant woody species were measured in August 2009. The relationship between lamina and lamina support was analyzed by the Standardized Major Axis estimation (model type II regression) with software (S)MATR Version 2.0.
Important findings Statistically significant allometric scaling relationships were found between petiole mass and lamina mass, area, and volume in all functional types and climate zones, with common slopes of 0.82, 0.70 and 0.80, respectively, all of which significantly departed from 1.0. Shrubs had greater lamina volume at a given petiole mass than trees, but the lamina mass and area they support were not significantly different. Evergreen species were observed to have greater lamina mass and lamina volume than deciduous ones, whereas deciduous species had a greater lamina area at a given petiole mass than evergreen ones. With the exception of Shennongjia, the species in subtropical sites were found to have greater lamina mass, lamina area, and lamina volume than temperate sites at a given petiole mass. However, the petiolar support efficiency in the subtropical climate of Shennongjia was close to sites in temperate climate. Our results indicate that the petiole constrains the maximization of lamina size (including mass, area and volume) and that the allometric relationship between lamina and lamina support varies with plant functional type, climate and habitat.

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