Runoff and sediment yield in a semi-arid environment: the effect of land management after farmland abandonment

Lasanta, T.; García-Ruiz, J. M.; Pérez-Rontomé, Carmen; Sancho-Marcén, Carlos

doi:10.1016/s0341-8162(99)00079-x

Cited by 174 publications

(108 citation statements)

References 12 publications

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“…The runoff and erosion values were very low for the non-cultivated land-use types with natural vegetation (grassland) and semi-natural vegetation (woodland and shrubland), nevertheless, those for agricultural fields (cropland and pastureland) were high. The changes in runoff and erosion with land use showed by our results are consistent with many other studies (e.g., Lasanta et al, 2000;Caravaca et al, 2002;Kosmas et al, 2000;McDonald et al, 2002).…”

Section: The Changes Of Conservation Efficiencysupporting

confidence: 93%

The relative efficiency of four representative cropland conversions in reducing water erosion: evidence from long‐term plots in the Loess hilly area, China

Huang

Chen

et al. 2006

Land Degrad Dev

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Large areas of traditional slope cropland were recently converted to other land-use types in the semiarid Loess Plateau of China. In this study, we selected four representative conversion options of slope croplands, i.e., pastureland rotated with cropland (cultivated with Medicago sativa L. and rotated with Triticum aestivum L.), shrubland and woodland (afforested with Hippophae rhamnoides L. and Pinus tabulaeformis), and grassland (native herbage Stipa breviflora) to study the effect of landuse conversion by comparing with traditional cropland. Compared with slope cropland, the relative effects of different conversion options on surface runoff and soil erosion were assessed over a 14-year measurement period. Observations showed that distinct features and consequences of vegetation succession were found among the conversion options. Plots of shrubland had the highest vegetation coverage with dense undergrowth; natural herbaceous and subshrub species gradually spread into plots of grassland resulting in higher vegetation cover. Neither bushes nor herbs colonized the plots of Pinus tabulaeformis, which resulted in a higher percentage of bare soil. Significant differences in runoff generation, sediment yield and conservation efficiencies among the selected conversion options were detected through an analyses of variance (ANOVA). Compared with cropland, total runoff and sediment decreased by 65 per cent and 95 per cent in shrubland, 41 per cent and 92Á5 per cent in grassland, 18 per cent and 77 per cent in woodland, and 12 per cent and 58 per cent in pastureland, respectively. The ranking of soil and water conservation efficiencies was shrubland > grassland > woodland > pastureland > cropland. Based on the effectiveness of soil and water conservation, shrubland and grassland are highly recommended as promising options for cropland conversion projects. However, pastureland and woodland are not suggested as potential options for slope-cropland conversion because of low soil and water conservation in the long term.

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Section: The Changes Of Conservation Efficiencysupporting

confidence: 93%

The relative efficiency of four representative cropland conversions in reducing water erosion: evidence from long‐term plots in the Loess hilly area, China

Huang

Chen

et al. 2006

Land Degrad Dev

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“…A a satisfactory estimate of the relationship between climate, the amount of erosion and sedimentation rates is however not available yet (Einsele and Hinderer, 1998;Verschuren, 1999). Population increase, intensive farming, land mismanagement and consequent deforestation are the predominant factors influencing the rate of erosion (Morgan, 1986;Lasanta et al, 2000). Erosion and/or denudation is also one of the main surface sedimentary process in Turkey both because of its semi-arid Mediterranean or continental climate and because of its strong relief reaching up to 4000 m. Nearly 30 % of the modern clastic deposit of the Black Sea has been provided by Turkish rivers (Hay, 1994).…”

Section: Introductionmentioning

confidence: 99%

Late Holocene erosion in NW Anatolia from sediments of Lake Manyas, Lake Ulubat and the southern shelf of the Marmara Sea, Turkey

Kazancı

Leroy

İleri

et al. 2004

CATENA

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This paper deals with modern and ancient sedimentation in fresh water lakes and the marine shelf of the southern Marmara region, NW Anatolia, Turkey. Most of the information has been obtained from monitoring of suspended load discharged into two lakes (Manyas and Ulubat) in the last 45 years and from 8-11 m thick lacustrine sediments, in addition to radiocarbon-dated shelf sediments. This allows a holistic approach to the drainage basin denudation over time. The results show that the sedimentation rates in the lakes were low 0. 22 cm.yr -1 , from 4000-2000 yr BP and then they increased (0.29 cm.yr -1 ) up to sub-recent times and reached 0.44 cm.yr -1 in the last century. It is suggested that deforestation created high rates of sedimentation in the basins and/or strong denudation of the region during the LateHolocene. This study also shows that for shallow freshwater lakes the calculation of sedimentation rates must include fine particles lost by the outlets and coarse-grained bed load deposited on their shores. In addition, a high rate of sedimentation has been created by short, but repetitive intense depositions. During the last century particularly during the last 45 years the rate of sedimentation or denudation has increased dramatically in NW Turkey. The two World Wars and mismanagement of the land had important local effects by increasing deforestation and resulting in the present erosive conditions.--

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“…As previously stated, in Mediterranean area, terraces induced deep anthropic landform changes on steep slope (Lasanta et al 2000;Varotto 2008;Kizos et al 2010), and have been recognized as a European cultural heritage (Varotto 2008;Arnaez et al 2011). In Italy, terraces are widespread features (Agnoletti et al 2011;Cullotta and Barbera 2011;Camera et al 2014).…”

Section: Introductionmentioning

confidence: 92%

Relationship between man-made environment and slope stability: the case of 2014 rainfall events in the terraced landscape of the Liguria region (northwestern Italy)

Giordan

Cignetti

Baldo

2017

Geomatics, Natural Hazards and Risk

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In the autumn of 2014, a series of rainfall events affected several sectors of the Liguria region, triggering many shallow landslides and causing three casualties and severe structural damages. The most intensely unstable area covered 385 km 2 , in which more than 1600 landslides have been identified. After these events, an airborne Light Detection and Ranging survey was carried out. The survey yielded a high-resolution digital terrain model (DTM) and aerial images that provided a means of identifying and mapping all the occurred landslides. The distribution analysis of slope instabilities highlighted the link with various human activities. In fact, the majority of the detected landslides occurred in man-modified areas. Geospatial and statistical analyses provided the identification of three main anthropic factors: terraces, their level of maintenance and road network. Moreover, they quantified their role in landslide triggering. These factors were not analysed as separate elements, but as a continuous process, overlapping in time, in man-made influence on landscape. The identification of such factors is a key element for a correct behaviour characterization of this landscape towards extreme flash floods events.

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Runoff and sediment yield in a semi-arid environment: the effect of land management after farmland abandonment

Abstract: El artículo seleccionado no se encuentra disponible por ahora a texto completo por no haber sido facilitado todavía por el investigador a cargo del archivo del mismo.

Cited by 174 publications

References 12 publications

The relative efficiency of four representative cropland conversions in reducing water erosion: evidence from long‐term plots in the Loess hilly area, China

The relative efficiency of four representative cropland conversions in reducing water erosion: evidence from long‐term plots in the Loess hilly area, China

Late Holocene erosion in NW Anatolia from sediments of Lake Manyas, Lake Ulubat and the southern shelf of the Marmara Sea, Turkey

Relationship between man-made environment and slope stability: the case of 2014 rainfall events in the terraced landscape of the Liguria region (northwestern Italy)

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