Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Spatial analysis of fine root distribution on a recently constructed ecosystem in a water-limited environment
Plant and Soil, Volume 344, No. 1, Year 2011
Notification
URL copied to clipboard!
Description
(1) to investigate the spatial distribution of fine roots and its correlation with selected soil properties on an artificial ecosystem dominated by woody vegetation species, and (2) to compare the root distribution to that predicted using a global model for natural ecosystems. Root diameter distribution (≤5 mm), root biomass density (RBD), root length density (RLD), soil pH, soil electrical conductivity and dry soil bulk density were measured on soil core samples (217) collected from a trench wall using a 20 × 20-cm grid sampling. Approximately 90% of the RBD (mean ± standard error: 0.27 ± 0.027 kg m-3) and RLD (1.57 ± 0.023 cm cm-3) occurred in the top 40 cm, decreasing exponentially to a maximum rooting depth of 150 cm. RBD exhibited a vertical spatial structure associated with soil pH (p < 0.05; r2 = 0.48), and a random lateral distribution. Coefficients of variation (CV) of RBD were high irrespective of orientation (vertical: 79-200%, lateral: 50-236%). The root extinction parameter β (0.944) for the global model was lower (p < 0.05) than that of woodlands (β = 0.964-0.976), indicating a shallow root distribution resembling that of grasslands (β = 0.943). The superficial root distribution indicated subsoil chemical constraints to root growth, while high lateral variability was attributed to sparse vegetation. The findings stress the need to account for both vertical and lateral variability of roots for accurate modelling of water use and productivity on certain artificial ecosystems with sparse vegetation. © 2011 Springer Science+Business Media B.V.
Authors & Co-Authors
Gwenzi, Willis
Australia, Perth
The University of Western Australia
Veneklaas, Erik J.
Australia, Perth
The University of Western Australia
Bleby, Timothy M.
Australia, Perth
The University of Western Australia
Hinz, Christoph
Australia, Perth
The University of Western Australia
Statistics
Citations: 52
Authors: 4
Affiliations: 3
Identifiers
Doi:
10.1007/s11104-011-0744-8
ISSN:
0032079X
Research Areas
Environmental