Land-use and land-cover dynamics and their drivers in the central highlands of Ethiopia with special reference to the Lake Wanchi watershed

Angessa, Abebe Tufa; Lemma, Brook; Yeshitela, Kumelachew

doi:10.1007/s10708-019-10130-1

Cited by 31 publications

(27 citation statements)

References 36 publications

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“…According to the study of Vorovencii (2016), the major causes attributable to land degradation were further recapitulated towards diverse socio-economic adjustments, land ownership problems, marginalization, poverty, political instability, and recurrence of natural hazards. Another key driver of the problem is lack of capacity and/or commitment to address the problem appropriately (Angessa et al 2019 The findings of different studies from plot-level measurement supported by empirical models confirmed that soil erosion in the highlands of Ethiopian on average ranges from 37 to 300 t/ha/year (Zeleke and Hurni 2001;Haile et al 2006;Tefera and Sterk 2010;Tibebe and Bewket 2011;Haregeweyn et al 2015;Gebreselassie et al 2016). The tolerance limit of soil erosion in this part of the country ranges between 6 and 18 t/ha/year with an average estimation of 10 t/ha/year that actually show variation according to land use types (Hurni 1985).…”

Section: Potential Impacts Of Land Degradationmentioning

confidence: 92%

Natural resource degradation tendencies in Ethiopia: a review

Wassie

2020

Environ Syst Res

263

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Background Ethiopia is gifted with abundant natural resources of adequate landmass, fertile soil, favorable climate, water, wildlife, and others. Many of its resources are not properly identified, well managed, and fully exploited. The concern of this review is collating the current state of knowledge about the status of land, water, forest, rangeland and wildlife resources, and hence, assesses their degradation tendencies. Results In Ethiopia, natural resources are under the influence of various interconnected factors like population pressure, agricultural expansion, migration, rapid urbanization, resettlement, climate change, and environmental pollution. Its huge population number had been putting a great burden on the sustainability of almost all types of natural resources. There is, therefore, serious degradation of land, water, forest, rangeland, and wildlife resources that appear to feed off each other. This results in severe soil loss, low vegetative cover, unsustainable farming practice, continuous use of dung and crop residues for fuel, overgrazing, and destruction and/or migration of wildlife, which again are intensifying the degradation of available resources in a vicious circle. The process ends with amplified environmental consequences such as water quality deterioration, biodiversity decline, and averts ecosystem services. It further recapitulates towards diverse socio-economic problems, political instability, marginalization, poverty, and recurrent natural hazards. The Ethiopian governments have taken several steps to address these problems like launching soil and water conservation campaign, tree planting programs, and others; success to date, however, has been limited. Conclusions Special attention has to be given to properly manage the natural resources and ecosystems; so that, it can continue to provide the goods and services the population need.

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Section: Potential Impacts Of Land Degradationmentioning

confidence: 92%

Natural resource degradation tendencies in Ethiopia: a review

Wassie

2020

Environ Syst Res

263

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“…The major land‐use and land‐cover types in the study area are forestland, shrubland, wetlands, water body, settlement, agriculture, enset‐dominated agroforestry and bare lands (Angessa et al, 2019). Out of these, three land‐cover types, namely forestland, shrubland and wetlands, comprise natural vegetation.…”

Section: Study Area and Methodsmentioning

confidence: 99%

“…Topographically, Lake Wanchi watershed is found in the extreme highland climatic zone of the district at an elevation ranging between 2,810 and 3,385 m above sea level. According to WOCAT (2007) slope classification, the slope of the area ranges from flat (0%-3%) at the lake water surface to very steeply sloped terrain >60% The major land-use and land-cover types in the study area are forestland, shrubland, wetlands, water body, settlement, agriculture, enset-dominated agroforestry and bare lands (Angessa et al, 2019…”

Section: Study Areamentioning

confidence: 99%

“…Despite a myriad of social‐ecological functions and services it provides, Lake Wanchi watershed is presently faced with several challenges that could cause severe environmental degradation and loss of ecosystem services on which human well‐being and local livelihoods depend. In the area, human‐induced land‐use change includes land conversion and encroachment into natural habitats (for agricultural and settlement expansion), biomass extraction (for construction, fuel wood and charcoal making), introduction of exotic species (mainly Eucalyptus ) and road construction (Angessa, Lemma, & Yeshitela, 2019). Such human land‐use changes are having serious effects on the maintenance of woody plant species diversity and associated ecosystem services in Lake Wanchi watershed.…”

Section: Introductionmentioning

confidence: 99%

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Woody plant diversity, composition and structure in relation to environmental variables and land‐cover types in Lake Wanchi watershed, central highlands of Ethiopia

et al. 2020

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Knowledge of vegetation dynamics associated with human land-use change and environmental variables is crucial for sustainable watershed management. The objective of this study was to analyse woody plant diversity in response to the effects of anthropogenic disturbances, and topographic variables in different land-cover types. Woody plants ≥5 cm diameter at breast height (DBH) were recorded from 20-by-20 m plots, those <5 cm DBH were recorded from 10-by-10 m plots, and tree seedlings were recorded in 3-by-3 m plots. Nonmetric multidimensional scaling with Bray-Curtis distance was employed to analyse woody species composition. Woody species richness was analysed using generalised linear modelling. Tree diameterclass distributions were examined for population structure. The study identified 104 woody plants belonging to 52 families, where 74.5% were indigenous and 16.7% were endemic to Ethiopia. Asteraceae, Fabaceae and Rosaceae were the most species-rich families. There was evidence for the effect of anthropogenic disturbance and elevation on woody species composition. Wetlands contained the highest woody species richness, while woody species richness declined with increasing elevation and disturbance. Evidence of good regeneration was observed in wetlands. To sustain the ecological functions and services provided by the watershed, rehabilitation of the forest and shrub-cover should be a high priority for local management authorities.

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“…Hence, the integration of spatial and temporal variation of land use land cover and soil erosion hazard map is critical for land-use planning. [55,57,58] In Ethiopia, the land use land cover change played a significant role in an increase in the rate of soil erosion hazard. [55,56,77] According to the estimation of refs.…”

Section: Effect Of Land Use Land Cover Change On Soil Erosionmentioning

confidence: 99%

The Spatiotemporal Dynamics of Land Use Land Cover Change, and Its Impact on Soil Erosion in Tagaw Watershed, Blue Nile Basin, Ethiopia

et al. 2021

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The Blue Nile basin is one of the hot‐spots of soil erosion areas in Ethiopia. However, the impact of land use changes on soil erosion is poorly understood in the Tagaw watershed. Hence, the objective of the study is to assess the impact of land use changes on soil erosion in Tagaw watershed over the last 31 years. Rainfall, soil, satellite images and topographic data are acquired from field survey and secondary sources. A Revised Universal Soil Loss Equation (RUSLE) model is used to estimate soil erosion. The mean annual and total potential soil losses of the watershed are 19.3, 22.9, 26 and 0.06–503.56, 0.11–516.67, and 0.00–543.5 tons ha −1 yr −1 for 1995, 2006 and 2016 respectively. The highest soil loss is found for bare land. The RUSLE model further showed that the highest soil erosion occurred in 2016 whereas the lowest soil erosion occurred in 1995.

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Land-use and land-cover dynamics and their drivers in the central highlands of Ethiopia with special reference to the Lake Wanchi watershed

Cited by 31 publications

References 36 publications

Natural resource degradation tendencies in Ethiopia: a review

Natural resource degradation tendencies in Ethiopia: a review

Woody plant diversity, composition and structure in relation to environmental variables and land‐cover types in Lake Wanchi watershed, central highlands of Ethiopia

The Spatiotemporal Dynamics of Land Use Land Cover Change, and Its Impact on Soil Erosion in Tagaw Watershed, Blue Nile Basin, Ethiopia

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