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

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

    Research output: Contribution to journalArticle

    29 Citations (Scopus)

    Abstract

    Resource retention is an important component of landscape function in semi-arid environments, with patches in the landscape serving as sink zones, capturing runoff, sediments and nutrients from inter-patches or source areas. The overall aim of this study was to compare the hydrological and erosional responses of patches and inter-patches using small-scale (1 m2) rainfall simulation in four vegetation states comprising woody encroachment (trees and shrubs > 1200 stems ha⿿1), recent pasture (<23 years of age), long-established pasture (50⿿100 years of age) and open woodland in relation to ground cover, in semi-arid south-eastern Australia. Hydrological and erosional responses differed consistently between patches and inter-patches within each vegetation state. Inter-patches (mean ground cover = 23.5% ± 2.7% SE) had the least desirable hydrological and erosional responses, and produced the highest amounts of runoff and sediment, followed in decreasing order by medium vegetated patches (mean ground cover = 54.8% ± 3.1% SE) and well vegetated patches (mean ground cover = 77.3% ± 3.1% SE). However, when hydrological and erosional responses from the same patch type and inter-patches were compared between vegetation states, two differences were found. Well vegetated patches in woody encroachment produced higher runoff than other well vegetated patches, and inter-patches in recent pasture had higher sediment concentration and production than inter-patches in other vegetation states. Total ground cover in the patch types was negatively correlated with runoff and sediment production, and with sediment production in inter-patches. Cryptogam cover in well vegetated patches was associated with higher runoff and sediment production, but cryptogam cover in inter-patches was associated with lower sediment concentration and production. Herbaceous cover and litter in medium vegetated patches were associated with lower runoff and sediment production. Our results indicate that patches and inter-patches are functional units from an eco-hydrological perspective within this semi-arid region and they influence soil hydrological and erosional characteristics irrespective of vegetation state
    Original languageEnglish
    Pages (from-to)524-534
    Number of pages11
    JournalGeoderma - A Global Journal of Soil Science
    Volume160
    Issue number3-4
    DOIs
    Publication statusPublished - 2011

    Fingerprint

    ground cover
    sediments
    runoff
    vegetation
    sediment
    soil
    cryptogams
    pasture
    pastures
    rainfall simulation
    dry environmental conditions
    arid environment
    semiarid region
    arid zones
    woodlands
    woodland
    litter
    shrub
    shrubs
    stem

    Cite this

    Muñoz-Robles, Carlos ; Reid, Nick ; Tighe, Matthew ; Briggs, Sue ; Wilson, Brian. / Soil hydrological and erosional responses in patches and inter-patches in vegetation states in semi-arid Australia. In: Geoderma - A Global Journal of Soil Science. 2011 ; Vol. 160, No. 3-4. pp. 524-534.
    @article{9d9b5241208b4e6a89b4ac8797cb0089,
    title = "Soil hydrological and erosional responses in patches and inter-patches in vegetation states in semi-arid Australia",
    abstract = "Resource retention is an important component of landscape function in semi-arid environments, with patches in the landscape serving as sink zones, capturing runoff, sediments and nutrients from inter-patches or source areas. The overall aim of this study was to compare the hydrological and erosional responses of patches and inter-patches using small-scale (1 m2) rainfall simulation in four vegetation states comprising woody encroachment (trees and shrubs > 1200 stems ha{\^a}¿¿1), recent pasture (<23 years of age), long-established pasture (50{\^a}¿¿100 years of age) and open woodland in relation to ground cover, in semi-arid south-eastern Australia. Hydrological and erosional responses differed consistently between patches and inter-patches within each vegetation state. Inter-patches (mean ground cover = 23.5{\%} {\^A}± 2.7{\%} SE) had the least desirable hydrological and erosional responses, and produced the highest amounts of runoff and sediment, followed in decreasing order by medium vegetated patches (mean ground cover = 54.8{\%} {\^A}± 3.1{\%} SE) and well vegetated patches (mean ground cover = 77.3{\%} {\^A}± 3.1{\%} SE). However, when hydrological and erosional responses from the same patch type and inter-patches were compared between vegetation states, two differences were found. Well vegetated patches in woody encroachment produced higher runoff than other well vegetated patches, and inter-patches in recent pasture had higher sediment concentration and production than inter-patches in other vegetation states. Total ground cover in the patch types was negatively correlated with runoff and sediment production, and with sediment production in inter-patches. Cryptogam cover in well vegetated patches was associated with higher runoff and sediment production, but cryptogam cover in inter-patches was associated with lower sediment concentration and production. Herbaceous cover and litter in medium vegetated patches were associated with lower runoff and sediment production. Our results indicate that patches and inter-patches are functional units from an eco-hydrological perspective within this semi-arid region and they influence soil hydrological and erosional characteristics irrespective of vegetation state",
    keywords = "Rainfall simulation, Soil erosion, Runoff, Woody plant encroachment, Woody thickening",
    author = "Carlos Mu{\~n}oz-Robles and Nick Reid and Matthew Tighe and Sue Briggs and Brian Wilson",
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    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.

    In: Geoderma - A Global Journal of Soil Science, Vol. 160, No. 3-4, 2011, p. 524-534.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Soil hydrological and erosional responses in patches and inter-patches in vegetation states in semi-arid Australia

    AU - Muñoz-Robles, Carlos

    AU - Reid, Nick

    AU - Tighe, Matthew

    AU - Briggs, Sue

    AU - Wilson, Brian

    PY - 2011

    Y1 - 2011

    N2 - Resource retention is an important component of landscape function in semi-arid environments, with patches in the landscape serving as sink zones, capturing runoff, sediments and nutrients from inter-patches or source areas. The overall aim of this study was to compare the hydrological and erosional responses of patches and inter-patches using small-scale (1 m2) rainfall simulation in four vegetation states comprising woody encroachment (trees and shrubs > 1200 stems ha⿿1), recent pasture (<23 years of age), long-established pasture (50⿿100 years of age) and open woodland in relation to ground cover, in semi-arid south-eastern Australia. Hydrological and erosional responses differed consistently between patches and inter-patches within each vegetation state. Inter-patches (mean ground cover = 23.5% ± 2.7% SE) had the least desirable hydrological and erosional responses, and produced the highest amounts of runoff and sediment, followed in decreasing order by medium vegetated patches (mean ground cover = 54.8% ± 3.1% SE) and well vegetated patches (mean ground cover = 77.3% ± 3.1% SE). However, when hydrological and erosional responses from the same patch type and inter-patches were compared between vegetation states, two differences were found. Well vegetated patches in woody encroachment produced higher runoff than other well vegetated patches, and inter-patches in recent pasture had higher sediment concentration and production than inter-patches in other vegetation states. Total ground cover in the patch types was negatively correlated with runoff and sediment production, and with sediment production in inter-patches. Cryptogam cover in well vegetated patches was associated with higher runoff and sediment production, but cryptogam cover in inter-patches was associated with lower sediment concentration and production. Herbaceous cover and litter in medium vegetated patches were associated with lower runoff and sediment production. Our results indicate that patches and inter-patches are functional units from an eco-hydrological perspective within this semi-arid region and they influence soil hydrological and erosional characteristics irrespective of vegetation state

    AB - Resource retention is an important component of landscape function in semi-arid environments, with patches in the landscape serving as sink zones, capturing runoff, sediments and nutrients from inter-patches or source areas. The overall aim of this study was to compare the hydrological and erosional responses of patches and inter-patches using small-scale (1 m2) rainfall simulation in four vegetation states comprising woody encroachment (trees and shrubs > 1200 stems ha⿿1), recent pasture (<23 years of age), long-established pasture (50⿿100 years of age) and open woodland in relation to ground cover, in semi-arid south-eastern Australia. Hydrological and erosional responses differed consistently between patches and inter-patches within each vegetation state. Inter-patches (mean ground cover = 23.5% ± 2.7% SE) had the least desirable hydrological and erosional responses, and produced the highest amounts of runoff and sediment, followed in decreasing order by medium vegetated patches (mean ground cover = 54.8% ± 3.1% SE) and well vegetated patches (mean ground cover = 77.3% ± 3.1% SE). However, when hydrological and erosional responses from the same patch type and inter-patches were compared between vegetation states, two differences were found. Well vegetated patches in woody encroachment produced higher runoff than other well vegetated patches, and inter-patches in recent pasture had higher sediment concentration and production than inter-patches in other vegetation states. Total ground cover in the patch types was negatively correlated with runoff and sediment production, and with sediment production in inter-patches. Cryptogam cover in well vegetated patches was associated with higher runoff and sediment production, but cryptogam cover in inter-patches was associated with lower sediment concentration and production. Herbaceous cover and litter in medium vegetated patches were associated with lower runoff and sediment production. Our results indicate that patches and inter-patches are functional units from an eco-hydrological perspective within this semi-arid region and they influence soil hydrological and erosional characteristics irrespective of vegetation state

    KW - Rainfall simulation

    KW - Soil erosion

    KW - Runoff

    KW - Woody plant encroachment

    KW - Woody thickening

    U2 - 10.1016/j.geoderma.2010.10.024

    DO - 10.1016/j.geoderma.2010.10.024

    M3 - Article

    VL - 160

    SP - 524

    EP - 534

    JO - Geoderma - A Global Journal of Soil Science

    JF - Geoderma - A Global Journal of Soil Science

    SN - 0016-7061

    IS - 3-4

    ER -