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- Title
江西常绿阔叶林木本植物不同冠层高度 当年生小枝茎构型对叶生物量的影响.
- Authors
卢艺苗; 王满堂; 陈晓萍; 吕 敏; 钟全林; 程栋梁
- Abstract
To investigate the effects of stem configuration on leaf biomass allocation in different organs of the current-year shoots at different canopy heights, relationships of biomass in different organs (i. e., leaves, stems, and twigs) and stem configuration (i. e., stem diameter, length, width/ length, stem volume and stem density) were analyzed using the data of 69 woody species from the Yangjifeng Natural Reserve, Jiangxi Provence. Standardized major axis (SMA) was used to explore the regression between biomass and stem configuration. The results showed that there was no significant difference in leaf biomass, stem biomass, twig biomass, stem diameter, stem length, stem width/length and stem volume of current year shoots from upper and lower canopy heights and life forms (i.e., evergreen and deciduous woody plants). Stem density differed significantly in the current year shoots at different heights for both evergreen and deciduous woody species. There were isometric relationships among leaf, stem and total biomass of shoots in different canopy heights and in different life forms. Leaf biomass scaled allometrically with stem diameter and volume, with the scaling exponents being not different significantly among different canopy heights. With respect to the stem configuration of the twigs, stem length, stem width/ length and stem density contributed less than 24% to the leaf biomass variation in the current-year shoots. On the contrary, stem diameter and volume had greater effects on leaf biomass of the current-year shoots than stem length, stem width/length and stem density. Canopy heights did not significantly affect the allometric scaling relationships between the stem configuration and leaf biomass of the current-year shoots.
- Subjects
JIANGXI Sheng (China); DECIDUOUS plants; WOODY plants; BIOMASS; TWIGS; DENSITY; PLANT shoots; PLANT biomass
- Publication
Yingyong Shengtai Xuebao, 2019, Vol 30, Issue 11, p3653
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.201911.001