Assessment of soil erosion processes and farmer perception of land conservation in Debre Mewi watershed near Lake Tana, Ethiopia

Zegeye, Assefa D.; Steenhuis, Tammo S.; Blake, Robert W.; Kidnau, S.; Collick, Amy S.; Dadgari, Farzad

doi:10.2478/v10104-011-0013-8

Cited by 84 publications

(93 citation statements)

References 24 publications

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“…Precipitation, discharge and storm event sediment yields are available from 1988-1994, 1996-2004, and 2008 (Table 1). 16901984-1993-2013Liu et al, 2008Guzman et al, 2013;Tilahun et al, 2013a,b;Elkamil, 2014;Tebebu et al, 2014;Bayabil et al, 2015 Maybar 113 Phaeozems and Phaeozems associated to Lithosols 12101988-19941996-2004Liu et al, 2008Bayabil, 2009;Bayabil et al, 2010;Guzman et al, 2013 Andit Tid 481 Andosols and Regosols 15001986-19921994-2001Liu et al, 2008Engda, 2009;Guzman et al, 2013;Tilahun et al, 2013b Debre Mewi 95 Nitosols and Vertisols 1240-2014Abiy, 2009Tebebu, 2009;Tebebu et al, 2010;Zegeye et al, 2010;Tilahun, 2012;Langendoen et al, 2013;Dagnew et al, 2014;Tebebu et al, 2014;Zegeye et al, 2014;Dagnew et al, 2015;Tilahun et al, 2015 The Andit Tid watershed, situated 180 km northeast of Addis Ababa at 39 • 43 ′ E and 9 • 48 ′ N, covers 481 ha ( …”

Section: Methodsmentioning

confidence: 99%

“…Consequently, the sediment concentrations decrease at the end of the rainy phase (Tilahun et al, 2013a,b;. Zegeye et al (2010) and Tilahun et al (2015) showed that rill formation stopped in August, and soil loss was greatly decreased from the uplands. The correlation of soil loss with plant cover was very weak (Tebebu et al, 2010) excluding plant cover as the cause for the decrease.…”

Section: Hydrological Similarity Of Watershedsmentioning

confidence: 99%

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Improving efficacy of landscape interventions in the (sub) humid Ethiopian highlands by improved understanding of runoff processes

et al. 2015

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Despite millions of dollars invested in soil and water conservation (SWC) practices in the (sub) humid Ethiopian highlands and billions of hours of food-for-work farm labor, sediment concentration in rivers is increasing. This paper reports on the research to reverse the current trend. Based on the understanding of the hydrology of highlands, we provide evidence on sources of surface runoff and sediment and on mechanisms that govern the erosion processes and approaches and how they affect SWC practices. We suggest that priority in landscape interventions should be given to re-vegetation of the degraded areas so as to reduce the sediment concentration contributions originating from these areas. Additionally, efforts should be directed to gully rehabilitation in the saturated bottom landscape that may consist of vegetating shallow gullies and stabilizing head cuts of deeper gullies. Finally, rehabilitation efforts should be directed to increase the rain water infiltration in the upland areas through the hardpan layer by connecting the land surface to the original deep flow paths that exist below about 60 cm. It will reduce the direct runoff during the rainy season and increase baseflow during the dry season.

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Section: Methodsmentioning

confidence: 99%

Section: Hydrological Similarity Of Watershedsmentioning

confidence: 99%

Improving efficacy of landscape interventions in the (sub) humid Ethiopian highlands by improved understanding of runoff processes

et al. 2015

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“…Models that take this general pattern of decrease in concentrations into account will have a greater ability to track suspended sediment concentration changes throughout the rainy season than models that attribute sediment concentration variability to crop type only. As shown by Zegeye et al (2010) during erosion measurements for different land uses, the sediment concentrations decrease all at the same time almost independent of the crop cover type.…”

Section: Implications Of the Findingsmentioning

confidence: 81%

Suspended sediment concentration–discharge relationships in the (sub-) humid Ethiopian highlands

Guzmán

Tilahun

Zegeye

et al. 2013

Hydrol. Earth Syst. Sci.

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Abstract. Loss of top soil and subsequent filling up of reservoirs in much of the lands with variable relief in developing countries degrades environmental resources necessary for subsistence. In the Ethiopia highlands, sediment mobilization from rain-fed agricultural fields is one of the leading factors causing land degradation. Sediment rating curves, produced from long-term sediment concentration and discharge data, attempt to predict suspended sediment concentration variations, which exhibit a distinct shift with the progression of the rainy season. In this paper, we calculate sediment rating curves and examine this shift in concentration for three watersheds in which rain-fed agriculture is practiced to differing extents. High sediment concentrations with low flows are found at the beginning of the rainy season of the semi-monsoonal climate, while high flows and low sediment concentrations occur at the end of the rainy season. Results show that a reasonably unique set of rating curves were obtained by separating biweekly data into early, mid, and late rainfall periods and by making adjustments for the ratio of plowed cropland. The shift from high to low concentrations suggests that diminishing sediment supply and dilution from greater base flow during the end of the rainfall period play important roles in characterizing changing sediment concentrations during the rainy season.

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“…However, most studies underlying soil conservation and restoration programs do not ask those affected by soil erosion for their input on the causes and potential solutions for soil erosion (Kelly et al, 2009, Marques et al, 2015. This lack of interaction with the group of people most familiar with issues surrounding soil erosion may explain why the problem persists, despite a long history of research and programs aimed to encourage farmers to adopt soil conservation practices (Zegeye et al, 2010;JaraRojas et al, 2013, Teshome et al, 2014. The decision of landowners to use and manage the land in a way that minimizes erosion depends on their perception of the landscape (Marques et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Soil Erosion Vulnerability in the Heavily Populated and Ecologically Fragile Communities in Motozintla De Mendoza, Chiapas, Mexico

González-Morales¹,

Mayer²,

Ramírez‐Marcial³

2017

Preprint

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survey showed that two-thirds of respondents believed that the major cause of soil erosion was hurricanes or rainfall and only 14% of respondents identified human activities as causes of erosion. Forty-two percent of respondents indicated that the responsibility for solving soil erosion problems lies with government, as opposed to 26% indicating that the community is responsible. More than half of respondents believed that reforestation is a viable option for reducing soil erosion, but only a third of respondents were currently applying reforestation practices and another onethird indicated that they were not following any conservation practices. The KAP results were used to assess the overall level of knowledge and interest in soil erosion problems and their solutions by compiling negative responses.

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Assessment of soil erosion processes and farmer perception of land conservation in Debre Mewi watershed near Lake Tana, Ethiopia

Cited by 84 publications

References 24 publications

Improving efficacy of landscape interventions in the (sub) humid Ethiopian highlands by improved understanding of runoff processes

Improving efficacy of landscape interventions in the (sub) humid Ethiopian highlands by improved understanding of runoff processes

Suspended sediment concentration–discharge relationships in the (sub-) humid Ethiopian highlands

Assessment of Soil Erosion Vulnerability in the Heavily Populated and Ecologically Fragile Communities in Motozintla De Mendoza, Chiapas, Mexico

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