Hustling and Bustling: Smallholder farmers' coping strategies in peri-urban Addis Ababa

Habitat International, Год журнала: 2025, Номер 163, С. 103458 - 103458

Опубликована: Июнь 3, 2025

Язык: Английский

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Spatiotemporal Dynamics of Urban and Rural Settlements in Tanzania (1975–2020): Drivers, Patterns, and Regional Disparities

Land, Год журнала: 2025, Номер 14(6), С. 1205 - 1205

Опубликована: Июнь 4, 2025

Exploring the spatiotemporal evolution of urban and rural settlements in African countries could provide critical insights into patterns urbanization, regional disparities, sustainable development context rapid socio-economic demographic changes. Using global human settlement data alongside multi-source environmental datasets, this study investigates dynamics Tanzania from 1975 to 2020. A combination methods, including hotspot analysis, standard deviation ellipse geographic detectors, is employed examine characteristics underlying factors contributing differentiation. The findings reveal that over past 45 years, expansion centers clusters has significantly accelerated, while areas have experienced a corresponding decline, reflecting shift low-density high-density transformation landscapes. Dar es Salaam, Mwanza, Arusha consistently been hotspots for center growth, Kagera emerged as primary clusters. distribution coldspots generally mirrors spatial centers, clusters, follows northwest–southeast orientation, with gradually stabilizing. However, gap between northwest southeast widening narrowing, respectively. Socio-economic exert stronger influence on than natural factors. Population density, GDP road network density are significant drivers patterns, their intensifying time.

Язык: Английский

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Perceptions and knowledge of ecosystem services in urban river systems, Eastern Cape, South Africa

Urban Ecosystems, Год журнала: 2024, Номер 27(5), С. 1905 - 1914

Опубликована: Май 28, 2024

Abstract The ecosystem services concept has been studied in rural contexts but not as much urban landscapes, particularly for aquatic ecosystems Africa. There is little knowledge of how people perceive (ES) supplied by rivers centres and the factors influencing their perceptions. To fill this gap, research presented here addresses two objectives: 1) to assess local communities’ perception different types an river South Africa, 2) influence particular demographic characteristics (age gender), socio-economic (education, housing type, income, years residence), prior on people’s provided Swartkops River Eastern Cape address these objectives, a team ten trained field staff collected 181 surveys between May–June 2021 communities within catchment. We used multinomial logit models analyse relationships variables, services. For majority services, there was almost equal split “sometimes” “never” that provides service, were less likely say always provide service. Prior concept, residence, age, income type significantly knowledge, important intangible whereas residence more tangible with direct use value. Level formal education significant variable. An implication study ecological interventions can be designed through understanding perceptions

Язык: Английский

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Urbanization will drive changes in the African food system and biodiversity through dietary shifts rather than through urban expansion

Research Square (Research Square), Год журнала: 2023, Номер unknown

Опубликована: Сен. 25, 2023

The rapid urbanization in Africa profoundly affects local food and ecological systems. According to earlier research, may cause production biodiversity losses as agricultural or natural lands are absorbed by expanding cities. Although land use displacement effects potentially buffer lead additional losses, they often overlooked. Moreover, of urbanization-induced dietary changes rarely considered. To address this, we combined spatially-explicit projections African urban expansion observed rice consumption shifts a partial equilibrium model (GLOBIOM). We highlight the importance identify potential issues accurately argue for their integration land-use planning policymaking across spatial scales. also show that accounting increases estimated values production, trade, methane emissions thereby underscore need granularity future demand predictions.

Язык: Английский

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Exploring the Spatiotemporal Evolution Patterns and Determinants of Construction Land in Mianning County on the Eastern Edge of the Qinghai–Tibet Plateau

Land, Год журнала: 2024, Номер 13(7), С. 993 - 993

Опубликована: Июль 5, 2024

Studying the spatiotemporal evolution and driving forces behind construction land amidst intricate ecological geological setting on eastern edge of Qinghai–Tibet Plateau offers invaluable insights for local sustainable development in a landscape transition zone ecologically fragile area. Using data from four phases, spanning 1990 to 2020, Mianning County, this study employs methodologies like Landscape Expansion Index (LEI) use transfer matrix delineate characteristics land. A comprehensive set 12 influencing factors across five categories—geomorphology, activity, climate, river vegetation environment, social economy—were examined. The Geographically Weighted Regression (GWR) model was then employed decipher spatial distribution pattern shedding light mechanisms its changes over three decades. research reveals distinct patterns shaped by landscape. Notably, Anning River wide valley exhibits concentrated contiguous mode, while Yalong deep showcases decentralized pattern, Dadu basin manifests an aggregation mode centered around high mountain lakes. Over period, all basins witnessed varying degrees expansion, transitioning quantitative expansion qualitative enhancement. Edge predominantly characterizes complemented leapfrog infilling modes, accompanied conversions cropland forest An analysis drivers change highlights human-induced dominating Basin, contrasting with natural prevailing Basin Basin. Future efforts should prioritize climate considerations environmental capacity, aiming resilient

Язык: Английский

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Investigating the nexus of urban expansion, wetlands, and livelihoods from 1991 to 2021: evidence from Hawassa, Ethiopia

African Geographical Review, Год журнала: 2024, Номер unknown, С. 1 - 18

Опубликована: Авг. 29, 2024

Urban expansion in Ethiopia, particularly informal construction, has led to complex and dynamic changes livelihoods wetlands. This study examined the effects of urban on Cheleleka Wetland livelihood peripheral community Hawassa. A mixed research design was used quantitatively analyze Landsat imagery (1991, 2001, 2011, 2021) socioeconomic data. Key informant interviews focus group discussion data were narrated qualitatively. The built-up area substantially increased from 718.11 ha 1991 4820.71 2021. However, agricultural wetland areas decreased 8807.58 8177.04 6382.44 7030.26 2021, respectively. Water forest fluctuated. Built-up had a significant advantage over other land use cover classes, with agricultural, wetland, being converted into throughout period. As result, Lake Hawassa expanded. Currently, been negatively impaired by overgrazing, cutting grass, animal dung dumps, eucalyptus plantations, expansion, expansion. exacerbated social economic divisions, resulting concentration poor-quality neighborhoods community. To protect wetlands, alternative participatory land-use planning are crucial.

Язык: Английский

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A DPSIR-Driven Agent-Based Model for Residential Choices and Mobility in an Urban Setting

Sustainability, Год журнала: 2024, Номер 16(18), С. 8181 - 8181

Опубликована: Сен. 19, 2024

Sustainability in cities, and its accurate exhaustive assessment, represent a major keystone of environmental sciences policy making urban planning. This study aims to provide methods for reproducible, descriptive, predictive prescriptive analysis residential choices mobility, which are key components an system’s sustainability. Using the DPSIR framework building agent evolution rules, we design agent-based model canton Geneva, Switzerland. The leverages real geographical data Geneva public transportation network. resulting simulations show dynamics relocation commuters, terms function their travel time by workplace. Results that areas around city centre generally preferred, but high rent prices housing availability may prevent most residents from relocating these areas. Other preferred locations distributed tram train lines where lower. associated tools capable spatialising aggregated statistical datasets, inferring spatial correlations, providing qualitative quantitative dynamics. Such achievements made possible thanks efficient visualisation our results. modelling methodology represents adequate solution understanding complex phenomena related sustainability systems, can be used as guidance making.

Язык: Английский

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High mobility lifestyles: Unpacking travel behavior in Accra's rapidly expanding periphery

Cities, Год журнала: 2024, Номер 155, С. 105471 - 105471

Опубликована: Окт. 4, 2024

Язык: Английский

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A Novel Approach to Predicting Urban Expansion by the Urban Scaling Law at a Single-City Scale

Remote Sensing, Год журнала: 2023, Номер 15(17), С. 4326 - 4326

Опубликована: Сен. 2, 2023

Rapid urban expansion caused by vigorous population growth brought up various socioeconomic and eco-environmental problems, which have important ramifications for sustainable development across the world. Along with accelerated urbanization process, accurate realistic prediction of is great importance to optimize planning development. This study proposed a new hybrid model, combined scaling law (USL) ANN-CA model predict expansion. To employ in we innovatively calculated exponent at single-city scale. Based on USL, estimated land demand future panel data regression. Finally, added area constraint ecological into simulate spatially. frame has been successfully applied Shenzhen, would increase from 816.45 km2 2020 842.48 2025. By comparing this traditional method, proved its effectiveness accuracy. Besides, found that can reflect level distinguish overconstructed cities.

Язык: Английский

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Investigate the Nexus of Urban Expansion, Wetlands, and Livelihoods from 1991 to 2021: Evidence from Hawassa, Ethiopia

Опубликована: Янв. 1, 2024

The rapid urbanization in Hawassa City has caused complex and dynamic changes the peripheral community's livelihoods wetlands. This study aimed to investigate effects of urban expansion on Cheleleka wetland livelihood community City. mixed research design used analyse satellite imagery community. Landsat from 1991, 2001, 2011, 2021 was classified into different land use cover (LULC) classes using a supervised classification approach maximum likelihood algorithms. Socio-economic data 333 respondents peri-urban area were collected through cross-sectional survey. built-up steadily increased 718.11 hectares 1991 4820.71 2021. However, agricultural areas decreased 8807.58 8177.04 6382.44 7030.26 2021, respectively. water forest fluctuated. had significant advantage over other uses classes, with agricultural, wetland, being converted throughout periods. largest amount agriculture bodies. As result, experienced deterioration, while Lake expanded. Currently, been negatively impacted by overgrazing, grass cutting, animal dung dumps, eucalyptus plantation, expansion, erosion, sedimentation. exacerbated social economic divisions, reduced interaction, led disagreements boundary delineation, household expenditure commuting, resulted concentration poor-quality neighborhoods To mitigate negative impacts effective planning management are needed.

Язык: Английский

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