Assessing the Influence of Informal Settlement on the Urban Forest Coverage of Yeka Sub City, Addis Ababa
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Date
2023-06
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Addis Ababa University
Abstract
The principal aims of this study was to assess the influence of informal settlement on the urban forestry of Yeka sub city in case of Ankorcha site. Mixed research approach was utilized. Both probability-based and non-biased sampling methods were used. Questionnaires, interviews, and observational methods were employed to gather data. The data were collected from both primary and secondary data sources. In this study the Researcher were able to determine causes and consequence of informal settlement and its influence on forest degradation. The method of data analysis used were descriptive statistics and inferential statistics using SPSS 26. Forest degradation was assessed using Object Based Image Analysis (OBIA) from Land Sat 8 satellite images. In addition, to analyze the trend of forest degradation and the extent of LULC change Geographical Information System software (GIS 10.7) was used. In the last two years interval (2020-2022), forest change was 767 hectares of forest land became degraded. In the year 2020, about 1,749 hectares of land were occupied by built-up area, this number has highly increased to 3,905 in the year 2022. That means the built-up area was increased by about 2156 hectares of land between two years This implies that about 767 hectares of land were changed from forest coverage to Bare land and built-up area. The person correlation coefficient was used to analyze the relation between the root causes of informal settlement and forest degradation. As a result of this study the main causes of the informal settlement were the increasing cost of house rent in urban areas had a strong significance correlation by .947 at p = .000, Poor land management .947** at p=000, delay of affordable house provision for the low-income group by .447** at p=000, urban expansion by .447**at p=000, and rural to urban migration by .418** at p=000, had a moderately significant influence on the expansion of informal settlements. Influence of informal settlement had a moderate correlation with forest degradation and land use land cover change was moderately influenced by the expansion of informal settlement in the study area with person correlation coefficient by .314** and .322** at p-value = .000 in Ankorcha of Yeka sub city respectively. In this study, the expansion of informal settlements was the major cause of forest degradation. The study also showed that delays in affordable housing and increase in house rent had highly enforced people to construct informal settlements in the area of forest coverage. The controlling strategies of informal settlement and forest degradation were community awareness, Urban land supply, availability and affordability of urban housing, and developing and implementing a modern cadastral information system were the key and major controlling strategies of informal settlement and forest degradation respectively.
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Informal settlement, forest coverage, Forest degradation, yeka sub-city, Ankorcha