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| 1 | Performance of Farmland Terraces in Maintaining Soil Fertility: A Case of Lake Maybar Watershed in Wello, Northern Highlands of Ethiopia显示文摘 | Shimeles Damene Lulseged Tamene Paul L.G. Vlek | 2012 | Journal of Life Sciences2012，6，11： | 4 |
| 2 | Yield stability and relationships among stability parameters in faba bean(Vicia faba L.) genotypes显示文摘Sixteen faba bean genotypes were evaluated in 13 environments in Ethiopia during the main cropping season for three years(2009–2011). The objectives of the study were to evaluate the yield stability of the genotypes and the relative importance of different stability parameters for improving selection in faba bean. The study was conducted using a randomized complete block design with four replications. G × E interaction and yield stability were estimated using 17 different stability parameters. Pooled analysis of variance for grain yield showed that the main effects of both genotypes and environments, and the interaction effect, were highly significant(P ≤ 0.001) and(P ≤ 0.01), respectively. The environment main effect accounted for 89.27% of the total yield variation, whereas genotype and G × E interaction effects accounted for 2.12% and 3.31%, respectively.Genotypic superiority index(Pi) and FT3 were found to be very informative for selecting both high-yielding and stable faba bean genotypes. Twelve of the 17 stability parameters,including CVi, RS, α, λ, S2 di, bi, S(2)i, Wi, σ2i, EV, P59, and ASV, were influenced simultaneously by both yield and stability. They should accordingly be used as complementary criteria to select genotypes with high yield and stability. Although none of the varieties showed consistently superior performance across all environments, the genotype EK 01024-1-2ranked in the top third of the test entries in 61.5% of the test environments and was identified as the most stable genotype, with type I stability. EK 01024-1-2 also showed a17.0% seed size advantage over the standard varieties and was released as a new variety in2013 for wide production and named 'Gora'. Different stability parameters explained genotypic performance differently, irrespective of yield performance. It was accordingly concluded that assessment of G × E interaction and yield stability should not be based on a single or a few stability parameters but rather on a combination of stability parameters. | Tamene Temesgen Gemechu Keneni Tadese Sefera Mussa Jarso | 2015 | The Crop Journal2015，3，3： | 3 |
| 3 | Assessing Soil Properties and Landforms in the Mai-Negus Catchment, Northern Ethiopia显示文摘Soil degradation is a serious environmental problem in Ethiopia. However, little information is documented on indicators such as variations in soil properties across different landforms in a catchment. This study was aimed to assess soil properties and their changes across sites with different erosion statuses, and identify landscape positions that require prior management attention in the Mai-Negus catchment, northern Ethiopia. Three types of erosion-status sites(stable, eroding and aggrading) were identified using reconnaissance surveys, and then the corresponding soil samples were collected and analyzed. The major soil properties were significantly varied(P ≤ 0.05) among the three erosion-status sites. The highest soil p H, organic carbon, total nitrogen, cation exchange capacity, iron and zinc were recorded from the aggrading sites in the reservoir and valley landforms of the study catchment. A higher bulk density was generally recorded in the eroding sites, whereas a lower value was observed in the aggrading sites. The highest sand content was observed in the eroding sites of the mountain followed by the central ridge landform. The paired mean difference and the correlation matrix of most soil properties between the different erosion statuses also showed significant differences. About 95% of the erosionstatus sites were correctly classified by the discriminant function, indicating that the field survey-based classification was acceptable for decision making. On the basis of this study, suitable interventions should thus be introduced to the prioritized landforms, which are the mountain and central ridge, and eroding sites with severely degraded soil properties across the catchment. | Gebreyesus Brhane TESFAHUNEGN Lulseged TAMENE Paul L.G.VLEK | 2016 | Pedosphere2016，26，5： | 3 |
| 4 | Analysis of factors determining sediment yield variability in the highlands of northern Ethiopia显示文摘 | L. Tamene S.J. Park R. Dikau P.L.G. Vlek | 2005 | Geomorphology2005，，1： | 1 |
| 5 | Catchment- scale spatial variability of soil properties and implications on site-specific soil management in northern Ethiopia 显示文摘 | Tesfahunegn G B Tamene L Vlek P L G | 2011 | Soil and Tillage Research2011，117，： | 1 |
| 6 | Indole-3-car- binol inhibited tobacco smoke carcinogen-induced lung adeno- carcinoma in A/J mice when administered during the post- initiation or progression phase of lung tumorigenesis显示文摘 | Qian Tamene Melkamu Pramod Upadhyaya | 2011 | Cancer Lett2011，311，1： | 1 |
| 7 | Enhanced inhibition of lung adenocarcinoma by combinatorial treatment with indole-3-carbinol and silihinin in A/J mice显示文摘 | A Dagne Tamene Melkamu Melissa M Schutten | 2011 | Carcino- genesis2011，32，4： | 1 |
| 8 | Catchment- scale spatial variability of soil properties and implications on site-specific soil management in northern Ethiopia 显示文摘 | Tesfahunegn G B Tamene L Vlek P L G | 2011 | Soil and Tillage Research2011，117，： | 1 |
| 9 | Cr( VI )reduction in aqueous solutions by siderite 显示文摘 | Mehmet Erdem Faruk Gur Fikret Tamen | 2004 | Journal of Hazardous Materials B2004，113，： | 1 |
| 10 | Awareness and adoption of land,soil and water conservation practices in the Chinyanja Triangle,Southern Africa显示文摘The promotion of land,soil and water conservation measures has been a widespread development in sub-Saharan Africa in a bid to tackle degradation and improve productivity.As a result,several gov-ernments have launched various campaigns on soil,land and water conservation measures.The aim of this study is to determine some of the factors that influence farmers'awareness(knowledge)and adoption of land,soil and water conservation practices.Data for this study was collected from 312 households using a questionnaire survey in the Chinyanja Triangle of Southern Africa.The study sites.were sampled from Tete province of Mozambique,central and southern regions of Malawi and eastern Province of Zambia.We used t-tests to classify adopters and non-adopters of soil,land and water con-servation measures and binomial logit models to identify the factors that infuence farmers'knowledge of conservation measures and adoption of land productivity practices.The results show that the household head's age,education,agricultural advice reception and farmer group membership are critical in raising awareness.While the household head's age,education,agricultural advice reception,farmer group membership,pieces of land owned or used in production and land-to-man ratio influenced adoption decisions.The study,therefore,concludes that in order to improve land productivity in the Chinyanja Triangle,there is a need to consider farmers'heterogeneity in terms of household head's age,level of education,extension services outreach,and socio-economic char acteristics.This suggests that governments'policies in the region should be aimed at improving farmers'level of education,extension delivery that will target the elderly and the youth,land ownership,credit access,and social capital such as group formation. | Nelson Mango Clifton Makate Lulseged Tamene Powell Mponela Gift Ndengu | 2017 | International Soil and Water Conservation Research2017，5，2： | 1 |
| 11 | Multi-pronged assessment of land degradation in West Africa to assess the importance of atmospheric fertilization in masking the processes involved显示文摘 | Quang Bao Le Lulseged Tamene Paul L.G. Vlek | 2012 | Global and Planetary Change2012，，： | 1 |
| 12 | Evaluation of soil quality identiifed by local farmers in Mai-Negus catchment,northern Ethiopia显示文摘 | Tesfahunegn G B Tamene L Vlek P L G | | 0，，： | 1 |
| 13 | Catchment-scale spatial variability of soil properties and implications on site- specific soil management in northern Ethiopia显示文摘 | Tesfahunegn G B Tamene L Vlek P L G | 2011 | Soil & Tillage Research2011，117，： | 1 |
| 14 | Catchment- scale spatial variability of soil properties and implica- tions on site-specific soil management in northern Ethi- opia显示文摘 | Tesfahunegn G B Tamene L Vlek P L G | 2011 | Soil and Tillage Research2011，117，0： | 1 |
| 15 | Brugada- like electrocardiography pattern induced by severe hyponatraemia显示文摘 | TAMENE A SATTIRAJU S WANG K | 2010 | Europace2010，12，6： | 1 |
| 16 | Multi-pronged assessment of land degradation in west africa to assess the importance of atmospheric fertilization in masking the processes involved显示文摘 | Le Q B Tamene L Vlek P L | 2012 | Global and Planetary Change2012，9293，0： | 1 |
| 17 | Competition for land resources:driving forces and consequences in crop-livestock production systems of the Ethiopian highlands显示文摘Introduction:Ethiopia has made efforts to tackle the challenges of low crop and livestock productivity and degradation of land resources through various rural development strategies.However,increasing demands for food,animal feed,fuel,and income-generating activities are putting pressure on the land.In this paper,we describe the production pressure and competition between crop and livestock production,quantify rates of land-use/cover(LULC)changes,and examine driving forces and consequences of land conversion.Methods:The study was conducted in Gudo Beret watershed,North Shewa Zone of Amhara region,Ethiopia.It used a combination of methods including remote sensing,household interviews,field observations,focus group discussions,and key informant interviews.Supervised and unsupervised image classification methods were employed to map LULC classes for 31 years(1984–2016).Results:The results of satellite remote sensing revealed that 51%of the land in the study area was subject to accelerated land conversions.The household survey results indicated that feed resources and grain production pressures were 1.43 and 1.34 t ha^(−1) respectively.The observed annual changes in plantation and settlement areas were 2.6%and 2.9%.This was mainly at the expense of bushland and grazing land systems.Cropland increased(0.4%year^(−1))while grazing land reduced(3.5%year^(−1))under contrasting dynamics and competitive changes.An increase in human and livestock populations and farm expansion were major drivers of land conversion that adversely affected household livelihoods and the natural ecosystem.The consequences of these pressures resulted in a lack of animal feed,low crop-livestock productivity,and a reduction in natural vegetation coverage.Conclusions:We suggest that sustainable land resource management,more integrated crop-livestock production,and the use of productivity-enhancing technologies could play a role in managing competition for land resources. | Wuletaw Mekuria Kindu Mekonnen Peter Thorne Melkamu Bezabih Lulseged Tamene Wuletawu Abera | 2018 | Ecological Processes2018，7，1： | 0 |
| 18 | Effects of sustainable land management interventions on selected soil properties in Geda watershed,central highlands of Ethiopia显示文摘Background:Land degradation through soil erosion by water is severe in the highlands of Ethiopia.In order to curb this problem,the government initiated sustainable land management interventions in different parts of the country since 2008,and in Geda watershed since 2012.However,the impacts of the interventions on soil properties were not assessed so far.Thus,this study investigated the impacts of sustainable land management interventions on selected soil properties in Geda watershed.Soil samples were collected from treated and untreated subwatersheds at the upper and lower landscape positions,from cropland and grazing lands at two soil depths(0-15 cm and 15-30 cm).Selected soil physicochemical properties were assessed with respect to landscape position,land-use type,and soil depth in both treated and untreated sub-watersheds.Results:Generally,most of the soil physicochemical properties differed greatly across sub-watersheds,land-use types,and soil depths.Clay,electrical conductivity,total N,available P,exchangeable K,and organic carbon were higher in the treated sub-watershed,whereas sand,silt,bulk density,and pH were higher in the untreated subwatershed.The higher sand,silt,and bulk density could be attributed to erosion,while the higher pH could be due to the higher exchangeable Na in the untreated sub-watershed.Most of the selected soil chemical properties were not affected by landscape position,but land-use type affected available P and organic carbon with higher mean values at croplands than at grazing lands,which could be ascribed to the conservation structure and tillage of the soils in that conservation structures trap and accumulate transported organic materials from the upper slope,while tillage facilitates aeration and decomposition processes.Conclusion:Sustainable land management interventions improved soil physicochemical properties and brought a positive restoration of the soil ecosystem.Maintaining the soil conservation measures and enhancing community awareness about the benefits,coupled with management of livestock grazing are required to sustain best practices. | Hailu Terefe Mekuria Argaw Lulseged Tamene Kindu Mekonnen John Recha Dawit Solomon | 2020 | Ecological Processes2020，9，1： | 0 |
| 19 | The influence of grazing and cultivation on runoff, soil erosion, and soil nutrient export in the central highlands of Ethiopia显示文摘Background:Grazing by livestock and cultivation have been considered as two important causes of soil erosion and nutrient export.However,there has been limited evidence that grazing or cultivation matters to soil erosion and nutrient export in Ethiopia.Hence,this study was conducted in the Galesa watershed in Ethiopia to examine the effects of grazing and cultivation on runoff,soil loss,and nutrient export.Daily values of runoff,soil erosion,and nutrient outflow were measured for three consecutive years following standard procedures.Independent t test was performed to check if the means of runoff,soil loss,and nutrient loss from grazing and cultivated lands were significantly different.Moreover,repeated analysis of variance(ANOVA)was used to test if mean values of runoff,soil loss,and nutrient export varied significantly over the study years.Results:Although the average annual runoff depth was 7.8%higher in grazing land(GL),soil erosion was significantly lower(39%)in GL as compared to cultivated land(CL).Similarly,sediment and runoff-associated annual losses of total nitrogen(N),available phosphorus(P),exchangeable potassium(K),and organic carbon(OC)were low in the GL treatments.Lowest losses of total N(9.30 kg ha^(−1) year^(−1)),available P(0.83 kg ha^(−1) year^(−1)),and exchangeable K(1.84 kg ha^(−1) year^(−1))were recorded in GL treatment.Likewise,lowest losses of sediment-associated total N(32.8 kg ha^(−1) year^(−1)),available P(0.39 kg ha^(−1) year^(−1)),exchangeable K(0.23 kg ha^(−1) year^(−1)),and soil organic carbon(630 kg ha^(−1) year^(−1))were recorded from GL over the 3 years of experimentation.Conclusion:Our results indicate that cultivation increased soil erosion as compared to grazing.Although there were significant reductions in soil erosion and nutrient export from grazing lands compared with cultivated lands,the absolute losses were still high.This implies the need for grazing land management using appropriate physical and biological erosion control measures to increase productivity and reduce soil erosion as well as nutrient export. | Zenebe Adimassu Lulseged Tamene Degefie TDegefie | 2020 | Ecological Processes2020，9，1： | 0 |
| 20 | Sustainable land management interventions lead to carbon sequestration in plant biomass and soil in a mixed croplivestock system:the case of Geda watershed,central highlands of Ethiopia显示文摘Background:Sustainable land management interventions were introduced in Geda watershed in 2012 to reduce soil erosion,improve water infiltration,and increase plant-carbon inputs into the soil.This study explored the impact of the interventions on biomass production,carbon stock,and carbon sequestration.Stratified sampling was employed in the main and the dry seasons in the treated and untreated sub-watersheds that are found adjacent to each other.Above-and below-ground plant biomass,soil bulk density and organic carbon in 0-15-and 15-30-cm depths,and soil moisture content in 0-20-and 20-40-cm depths were collected from the crop,grazing,and tree lucerne plots.All analyses were performed based on standard procedures.Results:Plant biomass production,carbon stock,and carbon sequestration varied highly significantly(P≤0.001)among sub-watersheds,landscape positions,and land uses.Higher mean values were observed for treated subwatershed,lower landscape position,and tree lucerne plot.The higher mean values in the lower landscape position of the treated sub-watershed were due to tree lucerne plantation.Similarly,topsoil(0-15 cm)carbon stock was statistically higher(P≤0.001)in the treated sub-watershed and at tree lucerne plot(P≤0.05).In addition,carbon stock by sub-surface soil(15-30 cm)was significantly higher(P≤0.001)in the treated sub-watershed under crop and grazing lands but the higher value was in cropland and in the upper position.This could be due to the decomposition of organic materials from biomasses of crops and biological supporting measures(tree lucerne and Phalaris)facilitated by tillage.Six years of sustainable land management interventions led to the sequestration of 12.25,7.77,and 13.5 Mg C ha^(−1) under cropland,tree lucerne,and grazing plots,respectively.Conclusion:Sustainable land management interventions revealed auspicious ecological impacts in Geda watershed in terms of improving plant biomass production,carbon stock,and correspondingly capturing higher carbon dioxide equivalent taking untreated sub-watershed as a baseline.Prohibition of free grazing was the key element of the intervention to reduce biomass export and increase carbon sequestration in the treated sub-watershed.Thus,sustaining tree lucerne plants as a conservation measure and the prohibition of free grazing practices are principally essential. | Hailu Terefe Mekuria Argaw Lulseged Tamene Kindu Mekonnen | 2020 | Ecological Processes2020，9，1： | 0 |
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