Assessment of the structure, diversity, and composition of woody species of urban forests of Adama city, Central Ethiopia

Koricho, Hingabu Hordofa; Seboka, Ararsa Derese; Song, Shaoxian

doi:10.1080/03071375.2020.1798702

Cited by 13 publications

(10 citation statements)

References 16 publications

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“…Te present study showed the occurrence slightly higher number (51.5%; N � 94) of non-native plant species than native species. A similar trend was reported by [16,18]. Smith [6] reported 1166 plant species of which 70% were non-native.…”

Section: Species Composition Diversity and Structuresupporting

confidence: 82%

“…PRGIs is lower compared to some of the previous studies. For example, diferent authors reported higher species values: [6] 1166 plant species; [7] 186 plant species; [13] 94 woody plant species; [11] 258 plant species; [5] 138 plant species; [12] 72 plant species; [4] 70 woody species; [18] reported 86 woody species. Contrary to this, a slightly lower (40) number of woody species was reported by [14] for home gardens in Jimma town; [19] reported the occurrence of 37 tree species in Port Harcourt city, and 46 tree species in Ilorin city urban forest in Nigeria.…”

Section: Species Composition Diversity and Structurementioning

confidence: 99%

“…For example, there are 1166 plant species in Shefeld, UK [6]; 186 plant species in São Luís city, Maranhão State, Brazil [7]; 94 woody species in Accra, Ghana [12]; and 62 plant species in Ekiti State, Nigeria [3]. Evidence from urban centers in Ethiopia conserves: 258 plant species in Hawassa [11], 138 plant species in Sabata [5], 72 plant species in Mekelle [10], 70 woody species in Abra Minch [4], 86 woody species for Adama [18]. For tropical home gardens, [15] reported the existence of 135 plant species.…”

Section: Introductionmentioning

confidence: 99%

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Woody Species Diversity and Biomass Carbon Sequestration in Private Residential Green Infrastructure of Dilla Town, Southern Ethiopia

Asfaw

Zergaw

2022

International Journal of Forestry Research

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Urban forests have an important role in biodiversity conservation, environmental improvement, and ecosystem services including climate change mitigation enhancement. The objectives of the current study were to: assess plant types and management strategies of the owners; woody species’ composition, structure, and diversity; and estimate aboveground biomass of trees and associated carbon stock in private residential green infrastructure (PRGI) at Dilla town. This study was conducted at three kebeles, the lowest administrative unit in Ethiopia. Ninety-four households were randomly selected from a proportional sample size for each kebele. A complete inventory of woody species was done after measuring the area occupied by plants at each household. At plot level, the aboveground biomass of sampled trees was calculated by using an allometric biomass equation developed for agroforestry species. Diversity was described by using different indices The free software EstimateS 9.1.0 was used to generate data for the construction of sample-based rarefaction curves and SPSS version 20 for descriptive statistics. Based on plant types and arrangement, the households manage their PRGI in 15 categories on area size, ranging from 10 m2 to 1229 m2, with an average holding size of 207.5 m2. A total of 66 plant species belonging to 45 families were identified. Overall, a total of 1220 stem ha−1 contributed to an aboveground carbon stock of 64.35 ton ha−1 of which 50.4% is from fruit trees and the rest from timber trees. The results suggest that PRGIs can serve as reservoirs of non-native and native plant species, including five native tree species currently facing conservation concerns.

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Section: Species Composition Diversity and Structuresupporting

confidence: 82%

Section: Species Composition Diversity and Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Woody Species Diversity and Biomass Carbon Sequestration in Private Residential Green Infrastructure of Dilla Town, Southern Ethiopia

Asfaw

Zergaw

2022

International Journal of Forestry Research

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“…According to Nowak (2020), characterizing the structure and composition of a particular area is a premise to quantify various ecosystem services, including runoff mitigation. The urban forest in Hawassa city shows relatively higher tree density and leaf area than other urban centers in the country, such as Adama town, in the central part of Ethiopia (Koricho et al 2020). This is probably due to the fact that tree planting and maintenance are being understood worthy in the study area to some extent than in Adama town.…”

Section: Gi Characterization As a Factor Affecting Runoff Reductionmentioning

confidence: 83%

WITHDRAWN: Rethinking Urban Planning from the Perspective of Nature-based Stormwater Runoff Management in Hawassa City, Ethiopia

Gebreyesus

Habtemariam

Mengistu

et al. 2022

Preprint

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A considerable area of land has been turned into a built surface due to urbanization in Ethiopia. Storm-runoff is the impact of land conversion into built areas, which is a threat every rain season in Hawassa city. GI-based urban planning plays a prominent role in runoff management. However, the potential benefit of GI remains unexplored in Ethiopia. This research aimed at evaluating the effectiveness of GI to alleviate stormwater runoff that cities have been suffering from. The i-Tree Eco model with pre-stratified random sampling techniques was employed to analyze the hydrological benefits of GI by considering the vegetation structural variables. The ArcGIS was further used to demonstrate the spatial distributions of annually avoided runoff and potential sites across the study area. The study shows that the total number of trees in the study area is 576,224, which contributes to 20.7% of tree coverage in the city. These trees annually intercepted 1,376,132.8 m3 water and avoided 288,372 m3yr-1 runoff, and in turn economically valued at $680,558 USD. However, the GI elements had different runoff reduction efficiency, according to the morpho-functional characteristics of tree species. GI types with large trees, high leaf area, and high number of broadleaved trees were more efficient. Stormwater runoff could be maximized through the incorporation of adequate GI coverage at the planning stage and proper execution on the ground. Hence, this research is expected to make planners and policymakers rethink the integration of GI with the spatial planning of cities in Ethiopia.

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“…The annual average minimum and maximum temperature of the study area was 13 and 27 0 c, respectively. The annual average rainfall is 837-1005.7 mm and its climate varies due to the great variation in altitude (Koricho et al, 2020). The total population of Adama city projection in 2018 was about 303,569 of which 150,228 are males and 153,341 are females.…”

Section: Study Areamentioning

confidence: 99%

Study on the ecosystem services of urban forests: implications for climate change mitigation in the case of Adama City of Oromiya Regional Sate, Ethiopia

et al. 2021

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Backgroundthis study was conducted to explore the ecosystem services of urban forests in Adama city, central Ethiopia. Attempts were made to quantify the carbon storage and sequestration, air pollution removal and hydrological bene ts of urban trees. The urban forest structure and composition of the city was surveyed and analyzed. The i-Tree Eco Model was employed to analyze the ecosystem services based on the current urban forests structure of the city. Resultsthe result revealed that the urban trees of the Adama city stored a total of 116,000 tons of carbon. The tree species identi ed with higher CO 2 sequestration per year were Melia azedarach (15%), Eucalyptusglobulus (8%), Carica papaya (7%), and Delonix regia (6%). In addition, 22%, 12%, 10% and 4% of carbon were stored by Eucalyptus globulus, Melia azedarach, Carica papaya and Delonix regia tree species respectively. Moreover, trees and shrubs species in the city removed about 188 thousand tons of air pollutants caused by O 3 , CO, NO 2 , PM2.5 and SO 2 per year. In Adama, 35% of the urban trees' volatile organic compaound emissions were from Eucalyptus cinerea and Eucalyptus globulus. The monetary value of Adama urban forest in terms of carbon storage, carbon sequestration, and pollution removal was estimated to 43,781, 3,121 yr − 1 and 320,915,596 USD yr − 1 , respectively. Conclusionsit was concluded that signi cant quantity of CO 2 and air pollutants were found being removed by the exotic tree and shrub species. However, every plant species found in the city does not mean ecologically important due their VOC emitting nature. Thus, the results of the study are valuable in increasing the awareness of the decision making bodies, the public and any stakeholders of the eco-bene ts of urban trees in the mitigation of climate changes.

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Assessment of the structure, diversity, and composition of woody species of urban forests of Adama city, Central Ethiopia

Cited by 13 publications

References 16 publications

Woody Species Diversity and Biomass Carbon Sequestration in Private Residential Green Infrastructure of Dilla Town, Southern Ethiopia

Woody Species Diversity and Biomass Carbon Sequestration in Private Residential Green Infrastructure of Dilla Town, Southern Ethiopia

WITHDRAWN: Rethinking Urban Planning from the Perspective of Nature-based Stormwater Runoff Management in Hawassa City, Ethiopia

Study on the ecosystem services of urban forests: implications for climate change mitigation in the case of Adama City of Oromiya Regional Sate, Ethiopia

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