The effectiveness of bench-terracing and afforestation for erosion control on Raña sediments in central Spain

Ternan, J. L.; Williams, Andy; Elmes, A.; Fitzjohn, C.

doi:10.1002/(sici)1099-145x(199612)7:4<337::aid-ldr238>3.0.co;2-g

Cited by 23 publications

(16 citation statements)

References 5 publications

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“…in western USA. At microscale, fine material deposition on terrace has been observed (Ternan et al, 1996;Zlatnik et al, 1999;Modrego and Elena-Rosselló, 2004), not only of soil particles but also of associated organic matter. For instance Rodríguez Rodríguez et al (2006) found that sediment transported by water erosion from forests of the Canary Islands had a C content nearly identical to top soil (0-5 cm).…”

Section: Discussionmentioning

confidence: 99%

“…Detrimental effects of terracing on the physicochemical properties of soils have been found (Ortigosa, 1991;Chaparro et al, 1994). Mechanical disruption mobilizes considerable volumes of soil, which especially affects top horizons (Williams et al, 1995), triggering surface runoff (De Witt and Brouwer, 1998) and erosive processes (Chaparro and Esteve-Selma, 1995;Ternan et al, 1996). Managers assumed that such detrimental effects would be transitory, but there is evidence that they last a long time (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Soil dynamics in Pinus halepensis reforestation: Effect of microenvironments and previous land use

et al. 2009

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Soil dynamics in Pinus halepensis reforestation: Effect of microenvironments and previous land use

et al. 2009

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“…In gullies, the most effective way to reduce or halt erosion has been to stabilise the gully floor, then revegetate the gully walls to avoid surface erosion (Yadav and Bhushan, 2002). Successful experiments have been reported from different countries, especially in Europe (e.g., Florineth, 2000;Ternan et al, 1996;Vallauri et al, 2002) and North America (e.g., Li and Eddleman, 2002;Meyer et al, 1997;Pezeshki et al, 2005). In marly gullies, bioengineering works made with brush layers on fascines can be used for gully stabilisation and revegetation (Rey, 2005).…”

Section: Introductionmentioning

confidence: 99%

Vegetation Dynamics on Sediment Deposits Upstream of Bioengineering Works in Mountainous Marly Gullies in a Mediterranean Climate (Southern Alps, France)

2005

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Current erosion-control studies in mountainous catchments emphasize the effectiveness of bioengineering works in constructing vegetation barriers that are designed to trap and permanently retain sediment upstream of such barriers. Plant establishment and succession should result in colonisation of these sediment deposits, thereby improving the trapping capacity of the works. The aim of this study is to evaluate the ability of the natural vegetation to colonise and grow on sediment accumulated upstream of 29 bioengineering works. They were constructed on the channel bottom of two marly gullies in the mountainous Southern French Alps region, which has a Mediterranean climate. We analysed the soil seed bank in sediment deposits after a germination experiment conducted in the laboratory, where soil cores were placed in a non-limited water condition. We also determined the standing vegetation which developed on the sediment deposits on field sites over 2 years of drought (2003 and 2004). The results show that the number of plants was 80/m 2 on average in the samples studied in the laboratory, vs. 31/m 2 in 2003 and 20/m 2 in 2004 on the field sites, with a total diversity of 40 species. Therefore, despite 2 years of drought, natural plant colonisation occurred on the sediment deposits. An improvement in soil water conditions slightly increases the capacity of the sediment deposits to allow seed germination. However, despite the initial success in vegetation colonisation, plant abundance and recovery were rather low, which suggests that vegetation established itself very slowly.

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“…In many cases, these techniques also reactivated slope erosion processes and soil losses (Romero-Diaz et al 2010). In others they simply produced negative effects on physical and chemical soil properties, together with a lower quality of the organic matter provided by the planted species to the topsoil (Ternan et al 1996;Cristina Zancada et al 2003).…”

Section: Trade-offs Between Es Provisioningmentioning

confidence: 99%

Large-scale afforestation for ecosystem service provisioning: learning from the past to improve the future

2021

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Context Afforestation is one of the major drivers of land cover change in the world. In spite of its multiple applications, forest generation has been fostered during the last century to achieve few specific objectives such as timber production or catchment erosion protection. However, new afforestation programs are required to meet multiple objectives such as carbon sequestration, reducing environmental risks and enhance biodiversity conservation to reach sustainability. Objectives Assessing the general efficiency of past large-scale afforestation programs on the provision of ecosystem services (ES) and other socio-ecological attributes. We also determined whether this efficiency depended on the type of ecosystem used for comparison. Methods We carried out a semi-quantitative meta-analysis from 75 studies analyzing the effects of 128 afforestation actions developed in one of the EU countries with larger areas of afforested land during the twentieth century. Results Spanish afforestation policy improved timber provision and carbon sequestration. However, our results show that afforestation programs did not enhance regulating ES when compared to natural land plots, but only when compared to highly degraded areas prior to restoration actions. Conclusions Large-scale afforestations have difficulties in assuring the provisioning of regulating ES and the conservation of biodiversity when only productivity criteria are prioritized. Our results suggest the need for an afforestation agenda that embraces more comprehensive landscape management approaches that allow reducing undesired ES trade-offs while getting multiple objectives from different ecosystems.

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The effectiveness of bench-terracing and afforestation for erosion control on Raña sediments in central Spain

Cited by 23 publications

References 5 publications

Soil dynamics in Pinus halepensis reforestation: Effect of microenvironments and previous land use

Soil dynamics in Pinus halepensis reforestation: Effect of microenvironments and previous land use

Vegetation Dynamics on Sediment Deposits Upstream of Bioengineering Works in Mountainous Marly Gullies in a Mediterranean Climate (Southern Alps, France)

Large-scale afforestation for ecosystem service provisioning: learning from the past to improve the future

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