Root architecture and its relation with the growth characteristics of three planted Shorea species (Dipterocarpaceae)

International Symposium on Arboriculture in the Tropics: Securing Ecosystem Functions in Urban Landscape 2017

农业科学;生态环境科学

Harahap, N.N.^1 ; Siregar, I.Z.^2 ; Dwiyanti, F.G.^2

Alumnus of Silviculture Department, Faculty of Agriculture, Bogor Agricultural University (IPB), IPB Darmaga Campus, Lingkar Akademik Street, West Java, Bogor

16680, Indonesia^1

Silviculture Department, Faculty of Agriculture, Bogor Agricultural University (IPB), IPB Darmaga Campus, Lingkar Akademik Street, West Java, Bogor

16680, Indonesia^2

关键词: Binding abilities;    Dipterocarpaceae;    Growth and development;    Growth characteristic;    ITS architecture;    Root architecture;    Root morphology;    Tropical forest;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/203/1/012016/pdf
DOI  :  10.1088/1755-1315/203/1/012016

来源: IOP

【 摘 要 】

Root and its architecture are important for trees to support their growth and development. However, there have been still few reports on tree roots architecture of important tropical forest tree species such as Shorea species. In this study, the differences of root architecture formation and the relation of root architecture and phenotype (growth) characteristics, including Index of Roots Anchoring (IRA) and Index of Roots Binding (IRB) of S. stenoptera, S. palembanica, and S. leprosula in Gunung Walat Education Forest were examined through root growth patterns, root morphology, and root growth variables. The results showed that the root growth patterns and the root morphology of three species were similar, which were classified into Champagnat group model with monopodial typical growth and tended to form orthotrophic branching. The total of root length significantly influenced tree height and trunk volume, while the depth root significantly influenced tree height and the crown diameter. The IRA values of S. stenoptera dan S. palembanica were categorized into medium group, while S. leprosula belonged to high group, suggesting that S. leprosula has a strong root anchorage compared to other two species. The IRB values of three Shorea species were categorized into low group, indicating low root binding ability in soil.