Browsing by Author "Demessie, Habtamu"

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    Ecosystem Services of Entoto Mountain Forest in Addis Ababa Ethiopia
    (Addis Ababa University, 2021-11-09) Demessie, Habtamu; Soromessa, Teshome (Professor)
    Addis Ababa is a highland city with varied topography and landscape features. The mountains that surround the city are covered with urban forest of different types. These forests are providing various ecosystem services for the urban and peri-urban population of the city. The value of this services is however poorly documented and less recognized by the relevant scientific studies. The objective of this study was to estimate the ecosystem service of the Entoto Mountain Forest (which is a principal forest reserves of the city of Addis Ababa) in terms carbon stock and sequestration weights and oxygen production rates. This was done through the use of forest inventory data collected from 46 sample plots (each with the size of 25 x 25 m (625m2) from Entoto Mountain Forest; and then estimating the biomass weight using on a combination of multispecies and species-specific biomass allomeric equations. The carbon sequestration and oxygen production rates were estimated through the use of mean annual tree growth rates and the corresponding biomass production rates estimates. The result shows that a total of 10,314 individual stands (which is equivalent to a density of 3,581 individual stands per hectare) were identified from the total sample plot area. The species diversity of the study area characterized by the domination of Eucalyptus globulus and Juniperus procera. The estimated amount of biomass and carbon stock weight is 1590.2 (552.3 t ha-1) and 744.7 t (258 t ha-1) respectively. The mean annual carbon sequestration and oxygen production rate is 23 t C y-1 ha-1 and 62 t O2 t y-1 ha-1. respectively. The estimated results and methodological approaches could be used as a measurement standard to determine the number of trees in an area required to maintain a healthy urban environment. The results are however a rough estimation and reaching to a more precise estimation requires continuous frost monitoring task with a focus on growth rate monitoring and biomass weigh estimation of different species.