Engdawork Assefa

Developing countries are experiencing a fast urban expansion which is highly impacted the land use land cover, LULC, biodiversity, local climate, and socio economic conditions. Understanding of urban LULC and its consequences is imperative to explore the opportunities that the urban has for sustainable development. The purpose of this study is to examine the patterns of LULC change, the effects of unsustainable land use, and mitigation measures. The study employed mixed methods including Satellite image, GIS techniques, and social survey. To further refine the study, secondary data from both published and unpublished materials were also used. The transfer of green space to built-up regions during the past three decades is evidence that the patterns of land use changes have become unsustainable. From 1986 to 2017, there has been a substantial quantity of deforestation (4467 ha of forest lost), and reduction of grassland (6314 ha) while built-up land has gone up by 9876 ha. The city's inefficient plans, along with the growing population, are the primary causes of the unsustainable LU. The city has experienced negative effects from unsustainable land use namely: flooding (areas susceptible for flooding increased by 69.5%), urban heat islands (the land surface temperature has increased by 3.80C), and carbon sequestration (at least 616, 044 C not sequestered and so released). On the other hand, a number initiatives have been implemented, albeit sporadically, to improve sustainable land use. Thus there is a need for policy makers and urban land use mangers to take into account empirical knowledge while planning.

Individuals and communities use and value water in multiple and complex ways. In Sub-Saharan Africa (SSA), the pluralistic nature of water values is poorly documented, and the existing and potential value trade-offs are unidentified. This study was undertaken in the Central Rift Valley (CRV) of Ethiopia to understand and map water values, priorities, risks, and trade-offs in a multi-stakeholder engagement process to provide the basis for more transparent and accountable decision-making. Integrated assessment methods, combining bio-physical and social methods, were applied. The results show 24 community-perceived and articulated water values that are diverse but interconnected, including values of water, landscapes, the river system, and downstream water bodies. Connections between people and landscape structures are articulated. In terms of priority water values, the overall results reflect the primary but basic need for water for food security and domestic uses. The results further illustrate the pluralistic nature of water values and the dichotomy of preferences among people of different backgrounds. The scenario-based Environmental Flow (EF) assessment exercise integrated into community value preferences and the event calendar that was used show that the river systems in CRV (Ketar, Kulumsa, and Gusha-Temela) have different ecological and socio-cultural flow requirements and that there are marked water value trade-offs. The conclusions of the study suggest that overlapping governance structures are affecting people’s perceptions of water and the way they articulate water values. Policy directions and decision-making need to recognize and acknowledge the multiple water values and competing uses of water in the CRV as a starting point to reconcile trade-offs that will then improve water security. Findings suggest that EF estimation and decision support tools can be customized to local ecological requirements through engaging local stakeholders in the assessment process.

Currently, circa 30% of the population in sub-Saharan Africa resides in cities, and this figure is expected to double in 2040. The recent literature describes the urban expansion processes of African cities in much detail. However, the urbanization wave in Africa also leads to important intra-urban land use dynamics, which have important consequences on the quality of life within existing cities, which has received less attention. This study aims to contribute to these information gaps by (1) analyzing the extent of the urban land use conversion in contrasting urban locations using satellite images for physical criteria-based classifications and (2) assessing the potential consequences of these intra-urban conversions on the quality of life. Intra-urban land use changes were documented based on satellite imagery for the period 2002–2020. Based on some representative attributes, Addis Ababa city was selected for the case study. Urban land use dynamics and population density changes were examined based on the selected case study neighborhoods and randomly identified land parcels in the city, respectively. Urban development strategies and programs that emerged over recent decades had caused intra-urban land use dynamics, which brought significant population density changes. Moreover, these changes have caused an unbalanced distribution of socio-economic amenities across the city.

Land degradation is the major economic and environmental threat in Ethiopia. Since the 1960s, the various traditional land management systems have undergone unprecedented changes. Within the context of farmers' awareness of land degradation and local responses to the problems, the objective of this study is to examine the resilience and stability of traditional land management knowledge in Southern Ethiopia. Data were collected using interviews, group discussions and field observations. Results of the study demonstrate that farmers have a wealth of experience in identifying the severity, dynamics and causes of soil erosion and soil fertility decline and grazing land deterioration. In response to these problems, farmers have developed a wide range of traditional land management practices, supported across the generations by the traditional law (benee woga) and norms. However, recent changes include reduction and abandonment of fallowing, modification of crop rotation and large‐scale reduction of manuring. The current practices used to fulfil livelihood requirements are the main driving forces that affect the resilience of the system. Thus, environmental and land use management planning should consider rehabilitating land not only based on traditional land management knowledge but also with regards to raising its agricultural productivity. Copyright © 2015 John Wiley & Sons, Ltd.

Agricultural landscapes in Ethiopia have undergone unprecedented changes. The direction of change, however, is unsustainable as manifested in land degradation, biodiversity loss, and low agricultural productivity. The objective of this study is to examine the patterns and trends of agricultural landscape development and responses of the local people within the framework of the dynamics of demography, socioeconomic conditions, politics, and natural resources in the Chencha and Arbaminch areas, Southern Ethiopia, during the last century. Information on cultivated and grazing land areas was acquired by satellite image interpretation. Interviews and group discussions provided important information on agricultural land use systems. A review and an analysis of secondary sources and documents of past studies were also used for trend analysis as a baseline and a supplement to oral history. The results show that cultivated land was expanded by 39% from 1973 until 2006, but per capita farming land holdings decreased enormously. In the same period of time, grassland shrank by 69% thus causing a significant decrease in livestock. Cultivated land scarcity can mostly be related to demographic pressure, which was exacerbated by government policy, land tenure, and the nature of subsistence agriculture. The farmers, however, were resourceful and developed skills over millennia to cope with the problems associated with population density and scarce resources. However, these traditional land use activities and land management practices have been deteriorating recently. Land use planners and environmental managers should take local knowledge and innovation into account in order to make sound decisions for the future.

The purpose of this study is to examine the origin, development, and characteristics of terraces (kella), plus their potentials and determinants for sustainable use in the Chencha–Dorze Belle area of southern Ethiopia. Field surveys were conducted to determine the various parameters of the indigenous terraces and in order to collect samples for radiocarbon dating. To identify farmers’ views of the terrace systems, semi-structured interviews and group discussions were also carried out. Terraces were built and used—as radiocarbon dating proves—at least over the last 800 years. The long-term continued usage of the indigenous terraces is the result of social commitments, the structural features of the terraces, and the farmers’ responses to the dynamics of social and cultural circumstances. We dubbed that the terraces are a success story of fruitful environmental management over generations. Thus, a strong need is to preserve and develop this important cultural heritage and example of sustainable land use.