Modeling the effect of three soil and water conservation practices in Tigray, Ethiopia

Hengsdijk, H.; Meijerink, G.W.; Mosugu, M.E.

doi:10.1016/j.agee.2004.06.002

Cited by 121 publications

(91 citation statements)

References 18 publications

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“…Regardless of a significant improvement in AF than that in RF land use, SQI ratings in all the three land use systems were very small compared with an ideal soil ( Table 5). This result was in agreement with findings from other authors [5,44] who reported that low organic matter and nutrient stocks are typical characteristics of soils in Tigray, mainly due to nutrient mining because of crop harvests and complete removal of crop residues for feed and fuel. One fundamental principle of sustainability is to return to the soil the nutrients removed through harvests and other loss pathways [45], and one of the main tenets of agroforestry is that trees enhance soil fertility [45,46].…”

Section: Soil Quality Indicators Integration and Assessmentsupporting

confidence: 83%

“…Much of the woodland in Tigray started to disappear in the early 1960s under pressure from the rapidly growing population [4]. Hengsdijk et al [5] wrote their observations as follows: "perhaps nowhere in the world land degradation and soil nutrient depletion are more evident than in the marginal highlands of Tigray". In the region, a short and variable rainy season in combination with degraded soils resulted in low soil productivity and frequent crop failures.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies were conducted to assess fertility statuses of soils in SSA [1][2][3][4][5][6][7][8]; however, almost all were only based on evaluation of individual soil parameters. Therefore, this study was conducted at a typical semi-arid agricultural watershed in Eastern Tigray, Northern Ethiopia, with the following objectives:…”

Section: Introductionmentioning

confidence: 99%

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Soil Quality Indices for Evaluating Smallholder Agricultural Land Uses in Northern Ethiopia

2015

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Population growth and increasing resource demands in Ethiopia are stressing and degrading agricultural landscapes. Most Ethiopian soils are already exhausted by several decades of over exploitation and mismanagement. Since many agricultural sustainability issues are related to soil quality, its assessment is very important. We determined integrated soil quality indices (SQI) within the surface 0-15 cm depth increment for three agricultural land uses: rain fed cultivation (RF); agroforestry (AF) and irrigated crop production (IR). Each land use was replicated five times within a semi-arid watershed in eastern Tigray, Northern Ethiopia. Using the framework suggested by Karlen and Stott (1994); four soil functions regarding soil's ability to: (1) accommodate water entry (WE); (2) facilitate water movement and availability (WMA); (3) resist degradation (RD); and (4) supply nutrients for plant growth (PNS) were estimated for each land use. The result revealed that AF affected all soil quality functions positively more than the other land uses. Furthermore, the four soil quality functions were integrated into an overall SQI; and the values for the three land uses were in the order: 0.58 (AF) > 0.51 (IR) > 0.47 (RF). The dominant soil properties influencing the integrated SQI values were soil organic carbon (26.4%); water stable aggregation (20.0%); total porosity (16.0%); total nitrogen (11.2%); microbial biomass carbon (6.4%); and cation exchange capacity (6.4%). Collectively, those six indicators accounted for more than 80% of the overall SQI values. OPEN ACCESSSustainability 2015, 7 2323

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Section: Soil Quality Indicators Integration and Assessmentsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

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Soil Quality Indices for Evaluating Smallholder Agricultural Land Uses in Northern Ethiopia

2015

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“…Erosion Model (Hengsdijk et al, 2005). However, such models require large amounts of input data whereas the return in increased accuracy of soil erosion prediction is limited (Jetten et al, 2003).…”

Section: Or the Limburg Soil 30mentioning

confidence: 99%

Empirical Estimation of the Spatial Sediment Transport Capacity Coefficient Using the Rain Erosivity Factor and SWAT Model Results in the Han River Basin, South Korea

Jung

Jang

Kim

2017

Preprint

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Abstract.The ratio of sediment delivery is a critical and uncertain factor in model-based assessments of the total sediment yield of watersheds that results from the transport of sediment produced by soil erosion. This study estimates the watershed-10 scale distribution of sediment yield at a spatial resolution of 1 km by 1 km through evaluating the rain erosivity (R) factor of the Revised Universal Soil Loss Equation ( Hydrol. Earth Syst. Sci. Discuss., https://doi

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“…Hengsdijk et al 2005;Nyssen et al 2006;Hammad and Borresen 2006;Fleskens et al 2007;Bizoza and de Graaff 2012;Balana et al 2012). However, often such evaluations entail only one particular technology or cover only one specific study site.…”

Section: Introductionmentioning

confidence: 99%

An Exploration of Scenarios to Support Sustainable Land Management Using Integrated Environmental Socio-economic Models

Fleskens

Nainggolan

Stringer

2013

Environmental Management

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Modeling the effect of three soil and water conservation practices in Tigray, Ethiopia

Cited by 121 publications

References 18 publications

Soil Quality Indices for Evaluating Smallholder Agricultural Land Uses in Northern Ethiopia

Soil Quality Indices for Evaluating Smallholder Agricultural Land Uses in Northern Ethiopia

Empirical Estimation of the Spatial Sediment Transport Capacity Coefficient Using the Rain Erosivity Factor and SWAT Model Results in the Han River Basin, South Korea

An Exploration of Scenarios to Support Sustainable Land Management Using Integrated Environmental Socio-economic Models

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