scholarly journals Ecosytem Services Assessment of Urban Forests of Adama City, Ethiopia

2020 ◽  
Author(s):  
Hingabu Hordofa Koricho ◽  
Ararsa Derese Seboka ◽  
Shaoxian Song
Keyword(s):  
Carbon Sequestration ◽  
Urban Environment ◽  
Carbon Storage ◽  
Azadirachta Indica ◽  
Eucalyptus Globulus ◽  
Carica Papaya ◽  
Urban Forest ◽  
Urban Forests ◽  
Pollution Removal ◽  
The City

Abstract Background: The recent urban challenges due to climate change and urban environment deterioration requires proper planning and inventories of urban forests. In this paper, trees and shrub information were used to estimate leaf area/biomass, carbon storage, carbon sequestration, pollution removal, and volatile organic compound (VOC) emissions, hydrological and functional values of Adama city urban forest. This study was conducted to assess and quantify the ecosystem services of urban forests of Adama city, Central Ethiopia.Results: The result of i-tree Eco model has indicated that the tree species such as Azadirachta indica, Eucalyptus globulus, Carica papaya and Delonix regia sequester high percentage of carbon which is approximately 14.7%, 7.4%, 7.3% and 6.2% of all annually sequestered carbon respectively. Besides, urban forests of the city was estimated to store 116,000 tons of carbon; the most carbons were stored by the species such as Eucalyptus globulus, Azadirachta indica, Carica papaya and Delonix regia that stores approximately 22.1%, 12.3%, 9.5% and 4.2% of all stored carbon respectively. Trees in Adama urban forests were estimated to produce 19.93 thousand tons of oxygen per year. It was estimated that trees and shrubs remove 188.3 thousand tons of air pollution due to O3, CO, NO2, PM2.5 and SO2 per year. In the city, 35 percent of the urban forest's VOC emissions were from Eucalyptus cinerea and Eucalyptus globulus. Besides, the monetary value of Adama urban forest in terms of carbon storage, carbon sequestration, and pollution removal was estimated to 16,588,470 ETB/yr, 118,283 ETB /yr and 12,162,701,080. 9 ETB /yr respectively.Conclusion: Urban forest of Adama city has significant contribution in terms of enhancing woody species diversity and the regulation of urban environment of the study area. From the management and conservation perspectives, urban forests of the study area needs consolidated interventions in terms of tree planting in bare areas and management works. Hence, reliable commitment should be demanded form the key stakeholders such as government, urban foresters and city dwellers.

scholarly journals Understanding the Ecosystem Services of Urban Forests: Implications for Climate Change Mitigtation in the case of Adama City of Oromiya Region Sate, Ethiopia

2020 ◽  
Author(s):  
Hingabu Hordofa Koricho ◽  
Ararsa Derese Seboka ◽  
Fekadu Fufa ◽  
Tikabo Gebreyesus ◽  
Shaoxian Song
Keyword(s):  
Ecosystem Services ◽  
Carbon Storage ◽  
Eucalyptus Globulus ◽  
Carica Papaya ◽  
Urban Forest ◽  
Urban Forests ◽  
Urban Trees ◽  
Melia Azedarach ◽  
Pollution Removal ◽  
The City

Abstract Background this 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 benefits of urban trees. The urban forest stracture 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. Results the result revealed that the urban trees of the Adama city stored a total of 116,000 tons of carbon. The tree species identified with higher CO2 sequestration per year were Melia azedarach (15%), Eucalyptusglobulus (8%, Carica papaya(7%), and Delonix regia (6%). Approximately 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 spps. in the city removed about 188 thousand tons of air pollutants caused by O3, CO, NO2, PM2.5 and SO2 per year. In Adama, 35% of the urban trees’ VOC 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. Conclusions it was concluded that significant quantiy of CO2 and air pollutnants 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, proper planning and inventories of urban forests should be put in place by the key stakeholders such as government, urban foresters and city dwellers as urban trees mitigates climate changes and essential to alleviate urban pollution besides the trees add esthetic value to the city.

scholarly journals Study on the Ecosystem Services of Urban Forests: Implications for Climate Change Mitigation in the Case of Adama City of Oromiya Regional State, Ethiopia

2021 ◽  
Author(s):  
Hingabu Hordofa Koricho ◽  
Ararsa Derese Seboka ◽  
Fekadu Fufa ◽  
Tikabo Gebreyesus ◽  
Shaoxian Song
Keyword(s):  
Ecosystem Services ◽  
Air Pollutants ◽  
Eucalyptus Globulus ◽  
Carica Papaya ◽  
Urban Forest ◽  
Urban Forests ◽  
Urban Trees ◽  
Melia Azedarach ◽  
Pollution Removal ◽  
The City

Abstract Background this 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 benefits 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. Results the result revealed that the urban trees of the Adama city stored a total of 116,000 tons of carbon. The tree species identified with higher CO2 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 O3, CO, NO2, PM2.5 and SO2 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. Conclusions it was concluded that significant quantity of CO2 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-benefits of urban trees in the mitigation of climate changes.

scholarly journals Association of urban forest landscape characteristics with biomass and soil carbon stocks in Harbin City, Northeastern China

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5825 ◽  
Author(s):  
Hailiang Lv ◽  
Wenjie Wang ◽  
Xingyuan He ◽  
Chenhui Wei ◽  
Lu Xiao ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Carbon Storage ◽  
Landscape Metrics ◽  
Patch Size ◽  
Urban Forest ◽  
Urban Forests ◽  
Forest Carbon ◽  
Landscape Patterns ◽  
Forest Landscape

Background Urban forests help in mitigating carbon emissions; however, their associations with landscape patterns are unclear. Understanding the associations would help us to evaluate urban forest ecological services and favor urban forest management via landscape regulations. We used Harbin, capital city of the northernmost province in China, as an example and hypothesized that the urban forests had different landscape metrics among different forest types, administrative districts, and urban–rural gradients, and these differences were closely associated with forest carbon sequestration in the biomass and soils. Methods We extracted the urban forest tree coverage area on the basis of 2 GF-1 remote sensing images and object-oriented based classification method. The analysis of forest landscape patterns and estimation of carbon storage were based on tree coverage data and 199 plots. We also examined the relationships between forest landscape metrics and carbon storage on the basis of forest types, administrative districts, ring roads, and history of urban settlements by using statistical methods. Results The small patches covering an area of less than 0.5 ha accounted for 72.6% of all patches (average patch size, 0.31 ha). The mean patch size (AREA_MN) and largest patch index (LPI) were the highest in the landscape and relaxation forest and Songbei District. The landscape shape index (LSI) and number of patches linearly decreased along rural-urban gradients (p < 0.05). The tree biomass carbon storage varied from less than 10 thousand tons in the urban center (first ring road region and 100-year regions) to more than 100 thousand tons in the rural regions (fourth ring road and newly urbanized regions). In the same urban–rural gradients, soil carbon storage varied from less than five thousand tons in the urban centers to 73–103 thousand tons in the rural regions. The association analysis indicated that the total forest area was the key factor that regulates total carbon storage in trees and soils. However, in the case of carbon density (ton ha−1), AREA_MN was strongly associated with tree biomass carbon, and soil carbon density was negatively related to LSI (p < 0.01) and AREA_MN (p < 0.05), but positively related to LPI (p < 0.05). Discussion The urban forests were more fragmented in Harbin than in other provincial cities in Northeastern China, as shown by the smaller patch size, more complex patch shape, and larger patch density. The decrease in LSI along the rural-urban gradients may contribute to the forest carbon sequestrations in downtown regions, particularly underground soil carbon accumulation, and the increasing patch size may benefit tree carbon sequestration. Our findings help us to understand how forest landscape metrics are associated with carbon storage function. These findings related to urban forest design may maximize forest carbon sequestration services and facilitate in precisely estimating the forest carbon sink.

scholarly journals Spatio-Temporal Changes of Urban Forests and Planning Evolution in a Highly Dynamical Urban Area: The Case Study of Wrocław, Poland

Forests ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 17 ◽  
Author(s):  
Justyna Jaworek-Jakubska ◽  
Maciej Filipiak ◽  
Adam Michalski ◽  
Anna Napierała-Filipiak
Keyword(s):  
World War Ii ◽  
Urban Forest ◽  
Urban Forests ◽  
Spatial Dimension ◽  
Temporal Changes ◽  
City Centre ◽  
Socialist Economy ◽  
Urban Green Spaces ◽  
Spatio Temporal ◽  
The City

Knowledge about urban forests in Poland is still limited, as it is primarily based on aggregate, formal data relating to the general area, ignoring the spatial dimension and informal green areas. This article describes and analyses spatio-temporal changes in the actual urban forest resources in Wrocław in 1944–2017, which covers the first period of the city’s rebuilding after its destruction during World War II and its development during the nationalised, centrally-planned socialist economy, as well as the second period of intensive and only partly controlled growth under conditions of market economy. The study is based on current and historical orthophotomaps, which were confronted with cartographic data, as well as planning documents. We found that between 1944 and 2017, the percentage contribution of informal woodlands increased tenfold (from 0.5 to 4.9% of the present total area of the city). The area occupied by such forests has grown particularly during the most recent years of the city’s intensive development. However, the forests have been increasingly fragmented. During the first period, new forest areas were also created in the immediate vicinity of the city centre, while during the second one, only in its peripheral sections. The post-war plans regarding the urban green spaces (UGS), including the current plan, are very conservative in nature. On the one hand, this means no interference with the oldest, biggest, and most valuable forest complexes, but on the other hand, insufficient consideration of the intensive built-up area expansion on former agriculture areas. Only to a limited extent did the above-mentioned plans take into account the informal woodlands, which provide an opportunity for strengthening the functional connectivity of landscape.

scholarly journals PEMENUHAN LUASAN HUTAN KOTA SEBAGAI PENCEGAH MASALAH LINGKUNGAN DI SURABAYA

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Martika Dini Syaputri ◽  
Nany Suryawati
Keyword(s):  
Urban Areas ◽  
Local Governments ◽  
Open Space ◽  
Central Government ◽  
Urban Forest ◽  
Urban Forests ◽  
Community Needs ◽  
Management And Development ◽  
The Government ◽  
The City

AbstractEnvironmental problems in urban areas are a problem that never stops. That every community needs a healthy life, but this seems difficult to become a reality for urban communities because the population continues to increase every year so that land conversion occurs which results in increased air and water pollution. Therefore, the central government hopes that each region or region can provide RTH 30% of the city area. The purpose of this study is to analyze the enforcement of the City Forest Regulations in Surabaya and to find out the efforts of local governments in fulfilling urban forest land in urban areas. This study uses a normative juridical method. As part of RTH, the development of urban forests in Surabaya is very much needed by the community, therefore cooperation between the government and the community is needed in the management and development of urban forests. Fulfillment of urban forest areas in Surabaya can be done by maximizing the form of urban forest that has been regulated based on the City Forest Regulation, either in the form of channels, groups or scattered.Keywords: city forest; green open space; urbanAbstrakMasalah lingkungan hidup diwilayah perkotaan merupakan masalah yang tak kunjung berakhir. Bahwa setiap masyarakat membutuhkan hidup sehat, namun hal tersebut seolah sulit menjadi kenyataan bagi masyarakat perkotaan yang disebabkan karena jumlah penduduk yang tiap tahun meningkat sehingga terjadi pengalihfungsian lahan yang berakibat pada semakin meningkatnya pencemaran udara maupun pencemaran air. Oleh karena itu, pemerintah pusat mengharapkan bagi setiap wilayah atau daerah menyediakan RTH 30% dari luasan kota. Tujuan dilakukannya penelitian ini adalah untuk menganalisa pemberlakuan Perda Hutan Kota di Surabaya serta mengetahui upaya pemerintah daerah dalam memenuhi lahan hutan kota pada wilayah perkotaan. Penelitian ini menggunakan metode yuridis normatif. Sebagai bagian dari RTH, pengembangan hutan kota di Surabaya sangat dibutuhkan oleh masyarakat oleh karenanya diperlukan kerjasama antara pemerintah dengan masyarakat dalam pengelolaan dan pengembangan hutan kota. Pemenuhan luasan hutan kota di Surabaya dapat dilakukan dengan mamaksimalkan bentuk dari hutan kota yang telah diatur berdasarkan pada Perda Hutan Kota, yakni dapat dengan bentuk jelaur, mengelompok maupun menyebar.

scholarly journals Analysis of the Urban Forest Status in Bandar Lampung City

2019 ◽  
Vol 7 (2) ◽  
pp. 235
Author(s):  
Agung Permada Yusuf ◽  
Arief Darmawan ◽  
Dian Iswandaru
Keyword(s):  
Open Space ◽  
Urban Forest ◽  
Urban Forests ◽  
City Government ◽  
Forest Ownership ◽  
The Status ◽  
The Government ◽  
The City ◽  
Forest Status ◽  
Made In

Urban forest is one form of green open space. Urban forests play an important role in maintaining the sustainability of ecological functions in a city. This role could only run optimally with the availability of urban forests. The purpose of this study is to analyze the status of land ownership and analyze the efforts that can be made in maintaining urban forests. This study used image analysis, interviews, and field observations. From the results of this study, the status of urban forests based on the Mayor of Bandar Lampung Decree in 2010 had different statuses at each location. The urban forest ownership does not exclusively belong to the government. Of the 5 locations, only 1 location owned by the Bandar Lampung City Government, with 1 location that is not recognized (problematic), 1 location did not have a certificate of rights yet, and 2 other locations were private locations. The best effort that could be made to maintain the existence of urban forests is to control urban forest land as ownership in the name of the City Government with the support of certain regulations that can be done. Keywords: land status, urban forest, Lampung

scholarly journals Air Pollution Removal by Green Infrastructures and Urban Forests in the City of Florence

2016 ◽  
Vol 8 ◽  
pp. 243-251 ◽  
Author(s):  
Francesca Bottalico ◽  
Gherardo Chirici ◽  
Francesca Giannetti ◽  
Alessandra De Marco ◽  
Susanna Nocentini ◽  
...  
Keyword(s):  
Air Pollution ◽  
Urban Forests ◽  
Pollution Removal ◽  
The City

scholarly journals Visiting the Forest with Kindergarten Children: Forest Suitability

Forests ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 696 ◽  
Author(s):  
Mojca Nastran
Keyword(s):  
School Children ◽  
Evaluation Method ◽  
Urban Forest ◽  
Mixed Forest ◽  
Urban Forests ◽  
Well Being ◽  
Kindergarten Children ◽  
Forest Planning ◽  
Forest Environment ◽  
The City

By providing ecosystem services, urban forests contribute significantly to the well-being of urban populations. Urban forests, along with other urban green spaces, are often the closest natural environment in the city where a child can play. The majority of pre-school children spend a large part of the day in kindergarten, which means that forest visits should have a prominent place in the kindergarten curriculum. Therefore, this study focuses on making the forest more suitable and thus more accessible for visits with children. The first goal of the research is to identify teachers’ preferences for the forest environment they visit with a group of pre-school children. The second goal is to present a forest suitability model for a visit with kindergarten children based on the teachers’ preferences. Based on the research survey conducted among the teachers in Slovenian public kindergartens, we formed and evaluated the criteria for the construction of a model of forest suitability for a visit with children. As the most important requirement for visiting a forest, the teachers note its proximity. They prefer a mature, mixed forest, with a bit of undergrowth, dead wood, and a presence of water and a meadow. Based on the identified criteria, we used the multi-criteria evaluation method in the GIS-environment in order to build a model of urban forest suitability for a visit with kindergarten groups of children in the study area of the City of Ljubljana, Slovenia. The results are useful in urban forest planning and management to ensure better forest suitability and accessibility for visits by children. Suitability maps can be used as one of the spatial foundations necessary for an integrated urban forest planning with emphasis on social functions. The model can be adapted beyond Slovenia to different spatial and social requirements and contexts.

scholarly journals Evaluation of Sampling Protocol for i-Tree Eco: A Case Study in Predicting Ecosystem Services at Auburn University

2013 ◽  
Vol 39 (2) ◽  
Author(s):  
Nicholas Martin ◽  
Arthur Chappelka ◽  
Greg Somers ◽  
Edward Loewenstein ◽  
Gary Keever
Keyword(s):  
Air Pollution ◽  
Ecosystem Services ◽  
Carbon Sequestration ◽  
Carbon Storage ◽  
Accurate Estimate ◽  
Sampling Protocol ◽  
Data Set ◽  
Auburn University ◽  
Pollution Removal

Auburn University (Auburn, Alabama, U.S.) was used as a site for a case study evaluating the standard plot sampling protocol for i-Tree Eco. A 100% tree inventory of the managed areas of campus was conducted in 2009–2010 and provided a complete data set for the evaluation. Air pollution removal, carbon storage, and carbon sequestration were the ecosystem services examined. Total tree population was also utilized for this assessment to provide a comparison to i-Tree Eco protocol. To achieve an estimate with a ±10% allowable error of the total campus value, 622 plots (0.04 ha each) with at least one tree present would need to be inventoried for air pollution removal, 870 plots for carbon storage, 483 plots for carbon sequestration, and 258 plots for number of trees, as opposed to the standard i-Tree Eco protocol of 200 plots. This study provides a first step in evaluating i-Tree Eco sampling protocol; however, efforts testing these results at sites throughout the southern United States are needed to provide the most accurate estimate of plot numbers necessary for predicting ecosystem services of urban forests.

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