Vegetation in Drylands: Effects on Wind Flow and Aeolian Sediment Transport

Mayaud, Jerome R.; Webb, Nicholas P.

doi:10.3390/land6030064

Cited by 48 publications

(47 citation statements)

References 173 publications

(375 reference statements)

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“…Regardless, this small reduction in potential erosivity will likely be offset in many locations by vegetation responses to climate change. Wind erosivity depends on how the wind field interacts with exposed soil at the surface, which is controlled by vegetation cover and structure (Mayaud and Webb 2017). Vegetation both extracts momentum from the wind and provides shelter zones in which wind speeds at the surface are reduced depending on plant density and size (Wolfe and Nickling 1993).…”

Section: Figurementioning

confidence: 99%

Climate change impacts on wind and water erosion on US rangelands

Edwards¹,

Webb²,

Brown³

et al. 2019

Journal of Soil and Water Conservation

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Soil erosion by water and wind in US rangelands has serious implications for rangeland health and food security and poses significant hazards to human health and communities. Accordingly, understanding how future climate change may impact soil erosion is critical for developing appropriate management strategies that mitigate negative impacts to the extent practical and potentially build resilience. Here, we review potential impacts of climate change on controls of erosion in US rangelands and discuss potential erosion responses. Projected climate changes are expected to have regionally variable effects on important controls of erosion, especially vegetation cover; community composition; frequency, magnitude, and geographical range of fire disturbance; and high intensity, erosive weather events, all of which have the potential to increase rangeland vulnerability to erosion. We identify knowledge gaps relevant to these controls and discuss management considerations to address climate change impacts to soil erosion concerns for US rangelands. In order to improve resilience and the efficacy of climate change adaptation, we recommend that existing monitoring data be used to create assessments of vulnerability, that soil erosion should be explicitly included in management benchmarks and decision support tools, and that no-regrets management options be implemented in anticipation of future impacts.

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Section: Figurementioning

confidence: 99%

Climate change impacts on wind and water erosion on US rangelands

Edwards¹,

Webb²,

Brown³

et al. 2019

Journal of Soil and Water Conservation

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“…5. Wind regime and sediment supply are known to control the formation of bare-sand dunes [20] largely. Changing coastlines around river mouths is a complex process.…”

Section: F Hydro Oceanographic Statementioning

confidence: 99%

Sedimentation Management Strategy in River Estuary for Control the Water Damage in Downstream of Ayung River

Eryani

Nurhamidah

2020

Int. J. Adv. Sci. Eng. Inf. Technol.

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The Ayung River Basin is the largest watershed on Bali Island. Ayung River flows from Lake Batur and empties into Padanggalak beach. River estuary is an area of sediment material deposition that will form an alluvial formation. The deposition of sediment at the river estuary is due to the influence of river flow, tidal, and wave action on the beach. Sediments that settle at the river estuary can obstruct water flow to the sea, which can cause backwater and flooding to the mainland. The strategy of controlling sediment deposition in the river estuary is essential to reduce the water damage in the downstream area, which is usually used as a tourism area. Ayung River Estuary is one of the estuaries that experienced a massive deposition; on the other hand, the Ayung River Estuary is widely used as a tourism area. The data used are primary and secondary-primary data obtained by a survey to the location and secondary data obtained from supporting data for analysis. Sedimentation occurs in the Ayung river estuary. It is due to soil type, topography, and hydro oceanographic condition. Besides, changes in the regional functions, such as temple construction, also affect the sedimentation process in the estuary. Sedimentation management strategies that can be carried out for the Ayung River estuary are the first is with the jetty construction method, which begins with the normalization of the downstream river, and the second is maintenance dredging, which is carried out through cooperation between the government and the community. Besides being used as sediment control, the jetty that was built can be developed as a tourist location around the estuary area.

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“…The model provided insight into the effects of roughness elements on aeolian thresholds and fluxes with strong theoretical underpinning (Shao et al, 2015). Based on this, progress has been made in identifying other vegetation factors important to aeolian processes such as vegetation distribution (such as the 'telephone pole problem' by Okin, 2008), configuration (Brown, Nickling, & Gillies, 2008), porosity and pliability (Mayaud & Webb, 2017), and albedo (Chappell & Webb, 2016). The model considered frontal area of roughness elements to be the primary vegetation factor influencing aeolian processes, the model neglects some factors that affect the wind erosion process such as vegetation patterns, configuration, or lodging, which may be important for sediment flux (Webb, Okin, & Brown, 2014).…”

Section: Introductionmentioning

confidence: 99%

Threshold friction velocities influenced by standing crop residue in the inland Pacific Northwest, USA

Huggins

Sharratt

2020

Land Degrad Dev

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Crop residue is an important factor affecting soil wind erosion. Few studies have tested the effects of crop residue on threshold friction velocities (U*t) which not only controls the initiation of wind erosion events but also the frequency and intensity of erosion events and thus the rate of land degradation. This study measured the threshold friction velocity (U*t) and aerodynamic roughness length (Z 0) in the pres

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Vegetation in Drylands: Effects on Wind Flow and Aeolian Sediment Transport

Cited by 48 publications

References 173 publications

Climate change impacts on wind and water erosion on US rangelands

Climate change impacts on wind and water erosion on US rangelands

Sedimentation Management Strategy in River Estuary for Control the Water Damage in Downstream of Ayung River

Threshold friction velocities influenced by standing crop residue in the inland Pacific Northwest, USA

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