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https://hdl.handle.net/1959.11/13633
Title: | Plant Root Contributions to Carbon Sequestration on the Northern Tablelands of New South Wales, Australia | Contributor(s): | Olupot, Giregon (author); Wilson, Brian (supervisor) ; Kristiansen, Paul (supervisor) ; Lockwood, Peter (supervisor); McLeod, Malem (supervisor); McHenry, Melinda (supervisor) | Conferred Date: | 2013 | Copyright Date: | 2012 | Open Access: | Yes | Handle Link: | https://hdl.handle.net/1959.11/13633 | Abstract: | Root contributions to the soil carbon (C) budget vary depending on botanical composition, land-use and management, soil characteristics and prevailing environmental and climatic conditions. How these factors interact to influence the distribution of C and nitrogen (N) stocks with soil depth is not well understood. A two-phased study was conducted to evaluate root contributions to depth distribution of C and N stocks in an Alfisol on the Northern Tablelands of New South Wales (NSW), Australia. Phase 1 evaluated the impact of land-use on: (i) distribution of fine root biomass and associated root functional traits to a maximum depth of 1.0 m, (ii) accumulation of root and soil C and N stocks within the 1.0 m soil profile in relation to the root traits investigated and (iii) decomposability of root litters from improved pastures, native pastures and woodlands. In phase II, a one-year field experiment was conducted to address objectives (i) to (iii) above under three native grasses of NSW: 'Austrodanthonia richardsonii' (C3 sun-adapted), 'Chloris ventricosa' (C4 sun-adapted) and 'Microlaena stipoides' (C3 shade-adapted) across growing seasons at 0% and 75% shading. | Publication Type: | Thesis Doctoral | Fields of Research (FoR) 2008: | 050305 Soil Physics | Fields of Research (FoR) 2020: | 410605 Soil physics | Socio-Economic Objective (SEO) 2008: | 960305 Ecosystem Adaptation to Climate Change | Socio-Economic Objective (SEO) 2020: | 190102 Ecosystem adaptation to climate change | Rights Statement: | Copyright 2012 - Giregon Olupot | HERDC Category Description: | T2 Thesis - Doctorate by Research |
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Appears in Collections: | School of Environmental and Rural Science Thesis Doctoral |
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open/MARCXML.xml | MARCXML.xml | 2.73 kB | Unknown | View/Open |
open/SOURCE05.pdf | Thesis, part 2 | 224.5 kB | Adobe PDF Download Adobe | View/Open |
open/SOURCE03.pdf | Abstract | 217.33 kB | Adobe PDF Download Adobe | View/Open |
open/SOURCE04.pdf | Thesis, part 1 | 254.31 kB | Adobe PDF Download Adobe | View/Open |
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