Soil hydrological and erosional responses in patches and inter-patches in vegetation states in semi-arid Australia

Muñoz-­Robles, Carlos; Reid, Nick; Tighe, Matthew; Briggs, Sue; Wilson, Brian

doi:10.1016/j.geoderma.2010.10.024

Cited by 50 publications

(55 citation statements)

References 44 publications

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“…In the more arid region, such effects are more profound, as perrenial plants modify the spatial patterning of soil properties, including water flow. Global research in this area has shown that infiltration is generally greater under the canopies of perennial plants than in their interspaces (Bhark and Small, 2003;Muñoz-Robles et al, 2011;Stavi et al, 2008). Our research showed that the pattern of infiltrability, our surrogate for infiltration, changed with disturbance.…”

Section: Discussionmentioning

confidence: 59%

Spatial patterns of infiltration vary with disturbance in a shrub-encroached woodland

Daryanto

Eldridge²,

Wang

2013

Geomorphology

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Woody plant encroachment is known to have substantial effects on a range of ecosystem processes. Research worldwide indicates that the area around shrubs and trees has higher levels of infiltration than the interspaces. Little is known, however, about the hydrological consequences of shrub removal on infiltration, and how this might be influenced by grazing. We examined the spatial patterns of infiltration across three treatments relating to shrub removal and grazing: (i) undisturbed (ungrazed, unploughed), (ii) grazed but unploughed, and (iii) grazed and ploughed. In general we found that disturbance was associated with a greater cover of bare soil but lower infiltrability, our laboratory-based measure of infiltration. At the undisturbed site, bare soil was patchy and localized, with an autocorrelation range or connectivity of 1.4 m. The autocorrelation range of infiltrability at this site (A0 = 3 m) was larger than would be predicted from the size of the shrub canopy, and this was attributed to the presence of a well-developed understorey layer and biological soil crust community. At both grazed sites, infiltration was confined to the immediate canopy area of the remaining shrubs (A0 = 1.2 m in the unploughed-grazed site). Additionally, there was increasing connectivity of bare soil with disturbance, up to 6.8 m at the ploughed-grazed site. With increasing disturbance, resource-rich shrub patches are likely to become more developed, further reinforcing their growth and persistence at the expense of the bare interspaces. Our results indicate the importance of shrubs for maintaining landscape connectivity, and the long-term unsustainable practice of removal by ploughing, which is likely to promote shrub dominance rather than suppression.

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Section: Discussionmentioning

confidence: 59%

Spatial patterns of infiltration vary with disturbance in a shrub-encroached woodland

Daryanto

Eldridge²,

Wang

2013

Geomorphology

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“…Neste contexto, estudos voltados para a compreensão da inferência da cobertura vegetal nas relações chuvaprecipitação efetiva são importantes no planejamento adequado do uso da água e do solo (MUNOZ-ROBLES et al, 2011;PATIN et al, 2012). Assim, objetiva-se com esta pesquisa investigar as influências das características dos eventos pluviométricos e da cobertura vegetal na precipitação efetiva (Pe) em floresta tropical sazonalmente seca (FTSS), no nordeste do Brasil.…”

Section: Methodsunclassified

“…Studies aimed at understanding the consequences of plant cover on the relationships of rainfall and effective precipitation are therefore important in the proper planning of water and land use (MUNOZ-ROBLES et al, 2011;PATIN et al, 2012). The aim of this research was to investigate the influence of the characteristics of rainfall events and plant cover on the effective precipitation (Pe) in a seasonally dry tropical forest (SDTF) in the northeast of Brazil.…”

Section: Introductionmentioning

confidence: 99%

Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

Andrade

Costa²,

Santos³

et al. 2017

AGRO@MBIENTE ON-LINE

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Abstract:The scarcity of information on the processes of rainfall-flow limits understanding of the hydrology of dry regions of the world. In order to minimise the problem, this study was developed to investigate the influence of the characteristics of rainfall events and plant cover on the effective precipitation (Pe) in a seasonally dry tropical forest (SDTF) in the Northeast of Brazil. The study was carried out in two paired watersheds, one with SDTF under regeneration for 35 years (CR35) and the other under thinned SDTF for 5 years (TC). A historical series of five years (2009)(2010)(2011)(2012)(2013) was analysed, with a total of 203 rainfall events, where only those rainfall events that generated a Pe > 1.0 mm were considered. CR35 had a greater number of Pe events (47) than TC (35). Rainfall depth and intensity were the factors that best explained the effective precipitation under both types of vegetation cover. The influence of herbaceous vegetation on the reduction of surface runoff was demonstrated by the smaller runoff depth and the greater potential for soil water storage in the watershed under thinned Caatinga. This fact leads to the conclusion that the technique of thinning is suitable management for Caatinga vegetation, and is capable of promoting the retention of soil water. Resumo: A escassez de informações sobre os processos chuva-deflúvio é uma limitação no entendimento da hidrologia das regiões secas do globo terrestre. Buscando minimizar esta problemática, desenvolveuse este estudo objetivando investigar as influências das características dos eventos pluviométricos e da cobertura vegetal na precipitação efetiva (Pe) em floresta tropical sazonalmente seca (FTSS), no nordeste do Brasil. O estudo foi realizado em duas microbacias emparelhadas, uma com FTSS em regeneração há 35 anos (CR35) e outra com FTSS raleada há 5 anos (CR). Foi analisada uma série histórica de cinco anos (2009)(2010)(2011)(2012)(2013), com um total de 203 eventos pluviométricos, sendo considerados somente os eventos pluviométricos que geraram Pe > 1,0 mm. A CR35 apresentou um maior número de eventos (47) de Pe do que a CR (35). A altura pluviométrica e as intensidades foram os fatores que melhor explicaram a precipitação efetiva em ambas as coberturas vegetais. A influência da vegetação herbácea na redução do escoamento superficial foi evidenciada pelas menores lâminas escoadas e pelo maior potencial de armazenamento de água no solo na microbacia com a Caatinga raleada. Tal fato permite concluir que a técnica de raleamento representa um manejo apropriado para a vegetação da Caatinga, sendo capaz de promover a retenção de água no solo.Palavras-chave: Chuva-deflúvio. Uso da terra. Estrato herbáceo. Semiárido.Revista Agro@mbiente On-line, v. 11, n. 4, p. 258-268, outubro-dezembro, 2017259 Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

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“…Cryptogam cover influences runoff and sediment response at a small scale (1 m 2 ) in the region (Muñoz-Robles et al, 2011b). The obstruction and trapping of water and sediment by patches influence runoff and sediment production at the hillslope scale (Ludwig et al, 2002(Ludwig et al, , 2005Tongway and Hindley, 2004).…”

Section: Ground Cover Mappingmentioning

confidence: 99%

“…Hydrological and erosional dynamics differ between low cover areas (inter-patches) that produce runoff, sediment and nutrients, and patches that function as sinks for these resources (Ludwig and Tongway, 1995). Therefore, patches and inter-patches are considered to be fundamental hydrologic units (Muñoz-Robles et al, 2011b;Reid et al, 1999). Runoff and infiltration capacity are controlled mainly by soil surface condition, particularly the nature of the surface crust and the amount and type of vegetative cover (Greene et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Assessing ground cover at patch and hillslope scale in semi-arid woody vegetation and pasture using fused Quickbird data

Muñoz-Robles

Frazier

Tighe

et al. 2012

International Journal of Applied Earth Observation and Geoinfor

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Soil hydrological and erosional responses in patches and inter-patches in vegetation states in semi-arid Australia

Cited by 50 publications

References 44 publications

Spatial patterns of infiltration vary with disturbance in a shrub-encroached woodland

Spatial patterns of infiltration vary with disturbance in a shrub-encroached woodland

Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

Assessing ground cover at patch and hillslope scale in semi-arid woody vegetation and pasture using fused Quickbird data

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