Managing drought risk in eucalypt seedling establishment: An analysis using experiment and model

Huth, Neil; Carberry, Peter; Cocks, Brett; Graham, Sonia; McGinness, Heather M.; O’Connell, Deborah

doi:10.1016/j.foreco.2008.02.024

Cited by 11 publications

(4 citation statements)

References 25 publications

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“…rainfall, Waikerie's average annual rainfall of 250 mm would correspond with a rooting depth of 2.1 m. This lies in between the rooting depths derived for the dune and the swale position in the landscape experiment. Based on the sensitivity analysis, we chose to work with an average RFV of 3 mm day -1 , which is lower than the reported values for other species in APSIM (Robertson et al 2002), and for other woody perennials such as Eucalyptus (Huth et al 2008). The low RFV of saltbush that we found might be due to the low planting density and a symptom of the extraction front lagging behind the actual root front because of low water demand.…”

Section: Discussionmentioning

confidence: 82%

“…Here, the saltbush module communicates with existing soil and weather modules. As the basis of the saltbush module, we used the physiological framework described in detail by Huth et al (2008). This framework has been successfully used in the development of models for other perennials such as Eucalyptus (Huth et al 2002(Huth et al , 2010 and oil palm (Huth et al 2014), and for the simulation of tree-crop interactions (Huth et al 2002).…”

Section: Model Descriptionmentioning

confidence: 99%

“…For both saltbush types, SLA deviated only slightly from 7.7 m 2 kg -1 over time, and it was decided to keep the parameter at that value. The canopy light extinction coefficient was set at 0.5, which is a common value for canopies with randomly distributed leaves (Monteith and Unsworth 1990;Huth et al 2008). A model sensitivity analysis was conducted to explore changes in simulated leaf biomass resulting from changes in model input parameters.…”

Section: Model Descriptionmentioning

confidence: 99%

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Simulation of water-limited growth of the forage shrub saltbush (Atriplex nummularia Lindl.) in a low-rainfall environment of southern Australia

et al. 2014

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Old man saltbush (Atriplex nummularia Lindl.) is a useful forage shrub for livestock in the low-rainfall areas of the world, and particularly in Australia. In these semi-arid and arid environments, saltbush is valuable for increasing the production from otherwise marginal areas of the farm and during drought periods when there are few feed alternatives. The ability to predict the growth and development of perennial forages such as old man saltbush in response to rainfall, soils and farm management is necessary for farming system planning and design purposes. A field experiment was conducted at Waikerie, South Australia, to inform the development of a new forage shrub model for use in the APSIM framework. The model takes into account the common setup of saltbush plantations in alley systems, by simulating light interception and water uptake for interacting shrub and inter-row zones separately. This is done by modelling the canopy and root system development. Field data across three soil types along a landscape catena showed that the model was able to satisfactorily predict daily biomass accumulation, partitioning into leaf and woody biomass, and regrowth after grazing. The model was sensitive to properties associated with the root system, and with limited parameterisation can be tailored to simulate different clonal cultivars. The model can now be used in the APSIM framework to assess temporal and spatial dynamics of forage systems combining shrubs with herbaceous pasture components.

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Section: Discussionmentioning

confidence: 82%

Section: Model Descriptionmentioning

confidence: 99%

Section: Model Descriptionmentioning

confidence: 99%

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Simulation of water-limited growth of the forage shrub saltbush (Atriplex nummularia Lindl.) in a low-rainfall environment of southern Australia

et al. 2014

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“…Uma das informações importantes para o planejamento é o risco de ocorrência de geadas, expresso na forma de "porcentagem de risco" ou "probabilidade de ocorrência" (ASTOLPHO et al, 2005). (HUTH et al, 2008).…”

Section: Geadaunclassified

Estimação do risco e do valor da floresta para fins securitários no Brasil

Prata¹

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Effects of water stress induced by sodium chloride and mannitol on proline accumulation, photosynthetic abilities and growth characters of eucalyptus (Eucalyptus camaldulensis Dehnh.)

Cha–um

Kirdmanee

2010

New Forests

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Managing drought risk in eucalypt seedling establishment: An analysis using experiment and model

Cited by 11 publications

References 25 publications

Simulation of water-limited growth of the forage shrub saltbush (Atriplex nummularia Lindl.) in a low-rainfall environment of southern Australia

Simulation of water-limited growth of the forage shrub saltbush (Atriplex nummularia Lindl.) in a low-rainfall environment of southern Australia

Estimação do risco e do valor da floresta para fins securitários no Brasil

Effects of water stress induced by sodium chloride and mannitol on proline accumulation, photosynthetic abilities and growth characters of eucalyptus (Eucalyptus camaldulensis Dehnh.)

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