Shrubland as a soil and water conservation agent in Mediterranean‐type ecosystems

Cerdà, Artemi; Giménez‐Morera, Antonio; Jordán, António; Pereira, Paulo; Novara, Agata; Keesstra, Saskia; Mataix-Solera, Jorge; Ruiz-Sinoga, J.A.

doi:10.1002/9781118649596.ch3

Cited by 3 publications

(4 citation statements)

References 29 publications

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“…According to Baartman et al (), man‐made structures like terraces are reducing sediment delivery to the outlet. Cerda et al () and Keesstra et al () have shown that leaving mulch within the catchment can reduce the amount of sediment transported to the catchment outlet. Furthermore, reducing the input of sediment from roads as a significant sediment contributor (Pereira et al, ) to the total sediment budget, is needed as part of an integrated approach to the whole catchment system.…”

Section: Discussionmentioning

confidence: 99%

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Reducing Sediment Connectivity Through man‐Made and Natural Sediment Sinks in the Minizr Catchment, Northwest Ethiopia

et al. 2016

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Man‐made and natural sediment sinks provide a practical means for reducing downstream reservoir sedimentation by decreasing soil erosion and enhancing the rate of sedimentation within a catchment. The Minizr catchment (20 km2) in the northwest Ethiopian highlands contains numerous man‐made soil and water conservation (SWC) structures such as soil bunds (Erken), fanya juu ridge (Cab) and micro‐trenches and natural sediment sinks such as wetlands, floodplains and grassed waterways. These sediment sinks reduce downstream sedimentation into the Koga reservoir, located at the catchment outlet, however, a large quantity of sediment is still reaching the reservoir. This study evaluates the function and effectiveness of both man‐made SWC structures and natural sediment sinks in reducing sediment export from the Minizr catchment. SWC structures and natural sediment sinks were digitized using Google Earth Imagery. Sediment pins and vertical sampling through the deposit were used to quantify the amount of deposited sediment. In addition, inflow and outflow of suspended sediment data were used to calculate the sediment‐trapping efficacies (STE) of man‐made SWC structures (soil bunds and fanya juu ridges) and natural sediment sinks. Results reveal that 144 km soil bunds and fanya juu ridges trapped 7,920 Mg y−1 (55 kg m−1 y−1) and micro‐trenches trapped 13·26 Mg y−1, each micro‐trench on average trapped 23 kg y−1. The 17 ha floodplain located in the centre of the catchment trapped 9,970 Mg y−1 (59 kg m−2 y−1), while a wetland with a surface area of 24 ha, located near the outlet of the catchment, trapped 8,715 Mg y−1 (36 kg m−2 y−1). The STEs of soil bunds and fanya juu ridges, wetlands and floodplains were 54%, 85% and 77%, respectively. Substantial differences were observed between the STE of grassed and un‐grassed waterways at 75% and 21%, respectively. Existing man‐made and natural sediment sinks played an important role in trapping sediment, with 38% (26,600 Mg y−1) of transported sediment being trapped, while 62% (43,000 Mg y−1) is exported from the catchment and thus enters the Koga reservoir. Therefore, additional catchment treatment measures are required as an integrated catchment scale sediment trapping approach to help reduce sediment loads entering Koga reservoir. Moreover, to maximize the effectiveness of sediment trapping measures, avoid structural failure and ensure their sustainability, regular maintenance is needed. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

“…According to Baartman et al (2013), man-made structures such as terraces reduce sediment delivery to the catchment outlet. Research has shown that leaving mulch on the soil surface within the catchment can also reduce the amount of sediment being detached (Cerda et al, 2015;Keesstra et al, 2016;Prosdocimi et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Reducing Sediment Connectivity Through man‐Made and Natural Sediment Sinks in the Minizr Catchment, Northwest Ethiopia

et al. 2016

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show abstract

“…According to Baartman et al (2013), man-made structures like terraces are reducing sediment delivery to the outlet. Cerda et al (2015) and Keesstra et al (2016) have shown that leaving mulch within the catchment can reduce the amount of sediment transported to the catchment outlet. Furthermore, reducing the input of sediment from roads as a significant sediment contributor to the total sediment budget, is needed as part of an integrated approach to the whole catchment system.…”

Section: Disconnecting Sediment Transfer Pathwaysmentioning

confidence: 99%

“…According to (Baartman et al, 2013), man-made structures such as terraces reduce sediment delivery to the catchment outlet. Research has shown that leaving mulch on the soil surface within the catchment can also reduce the amount of sediment being detached (Cerda et al, 2015;Prosdocimi et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Sustaining reservoir use through sediment trapping in NW Ethiopia

Getahun¹

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Ability of green cover from sainfoin (Onobrychis viciifolia Scop.) and dog rose (Rosa canina L.) to control erosion and improve soil organic carbon and nitrogen stocks in terraces of Northwest Turkey

Sarıyıldız

Savacı

2020

Euro-Mediterr J Environ Integr

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Shrubland as a soil and water conservation agent in Mediterranean‐type ecosystems

Cited by 3 publications

References 29 publications

Reducing Sediment Connectivity Through man‐Made and Natural Sediment Sinks in the Minizr Catchment, Northwest Ethiopia

Reducing Sediment Connectivity Through man‐Made and Natural Sediment Sinks in the Minizr Catchment, Northwest Ethiopia

Sustaining reservoir use through sediment trapping in NW Ethiopia

Ability of green cover from sainfoin (Onobrychis viciifolia Scop.) and dog rose (Rosa canina L.) to control erosion and improve soil organic carbon and nitrogen stocks in terraces of Northwest Turkey

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