Pub Date : 2022-04-03DOI: 10.1080/03071375.2022.2083841
I. Rotherham
{"title":"The tree experts – a history of professional arboriculture in Britain","authors":"I. Rotherham","doi":"10.1080/03071375.2022.2083841","DOIUrl":"https://doi.org/10.1080/03071375.2022.2083841","url":null,"abstract":"","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"81 1","pages":"122 - 123"},"PeriodicalIF":0.0,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72853655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-03DOI: 10.1080/03071375.2022.2082768
I. Rotherham
Energy, fuel, and carbon all feature in this second issue of 2022. Dash, Pradhan, and Behera (2022) consider above-ground biomass of trees in urban parks of Bhubaneswar in India. They go on to estimate the potential carbon storage in these trees. Their research highlights the possible roles of urban greenspaces such as parks in helping to mitigate climate change drivers by storing carbon. They argue that this also provides impetus (along with other benefits) for urban planners to value such areas and to protect and enhance them. The context then switches to Ethiopia as Feyisa, Negash, and Melka (2022) examine the importance of “green infrastructure” in relation to woody plant diversity and carbon capacity in Hawassa city. The work indicated the importance of soil carbon stock in urban green infrastructure but also highlighted the predominance of exotic woody species. The authors advocate more use of appropriate native species in future planting schemes. Fitria, Cheong, Solikhin, Firdaus, and Ward (2022) researched issues of urban forest policies in Indonesia in relation to bioenergy potential of the various tree species. They conclude that a range of these tree species can be considered to have multipurpose functions to include: fuel for bioenergy, wood-based furniture, food and foraging, medicine, and many other uses. Along with producing firewood and charcoal, some of the trees could be utilised as biofuel for biogas, bio-pellet, and electricity generation. Furthermore, they suggest that this bioenergy potential of urban forest trees could help Indonesia energy-independent cities. These ideas might be transferable to other countries and regions.
{"title":"Energy, fuel, and carbon","authors":"I. Rotherham","doi":"10.1080/03071375.2022.2082768","DOIUrl":"https://doi.org/10.1080/03071375.2022.2082768","url":null,"abstract":"Energy, fuel, and carbon all feature in this second issue of 2022. Dash, Pradhan, and Behera (2022) consider above-ground biomass of trees in urban parks of Bhubaneswar in India. They go on to estimate the potential carbon storage in these trees. Their research highlights the possible roles of urban greenspaces such as parks in helping to mitigate climate change drivers by storing carbon. They argue that this also provides impetus (along with other benefits) for urban planners to value such areas and to protect and enhance them. The context then switches to Ethiopia as Feyisa, Negash, and Melka (2022) examine the importance of “green infrastructure” in relation to woody plant diversity and carbon capacity in Hawassa city. The work indicated the importance of soil carbon stock in urban green infrastructure but also highlighted the predominance of exotic woody species. The authors advocate more use of appropriate native species in future planting schemes. Fitria, Cheong, Solikhin, Firdaus, and Ward (2022) researched issues of urban forest policies in Indonesia in relation to bioenergy potential of the various tree species. They conclude that a range of these tree species can be considered to have multipurpose functions to include: fuel for bioenergy, wood-based furniture, food and foraging, medicine, and many other uses. Along with producing firewood and charcoal, some of the trees could be utilised as biofuel for biogas, bio-pellet, and electricity generation. Furthermore, they suggest that this bioenergy potential of urban forest trees could help Indonesia energy-independent cities. These ideas might be transferable to other countries and regions.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"43 1","pages":"71 - 71"},"PeriodicalIF":0.0,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85627194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-03DOI: 10.1080/03071375.2021.2022326
Sai Abhipsa Dash, Antaryami Pradhan, N. Behera
ABSTRACT Cities play important roles in the conservation of global biodiversity and climate change mitigation, particularly through the planning and management of urban green spaces. Bhubaneswar is a rapidly urbanising city and is witnessing a decline in its green status. This study aims to understand the current species composition and structure in selected urban parks. These urban parks are also reservoirs of carbon stock; and the study estimates park biomass and biomass carbon stocks. We documented 48 species belonging to 44 genera and 22 families in this study. The population structure in the parks revealed that most of the parks lacks trees in the sapling category and hence the regeneration potential is lacking. This may be because of the plantation of various tree species in different planting years. We found the carbon stock ranging from 13.48 Mg in an area of 0.22 ha in SV Park, to 479.49 Mg in an area of 8.91 ha in BP Park. On average, we estimated the biomass per ha to be 32.85 Mg. The difference in carbon stock among the considered parks result from difference in park size, species composition, and structure. Local authorities can use the current assessment of species composition and carbon stock to safeguard the existing trees and prioritise the planting effort in these urban parks.
{"title":"Estimation of above-ground biomass and carbon stock of tree species in public parks of Bhubaneswar, Odisha","authors":"Sai Abhipsa Dash, Antaryami Pradhan, N. Behera","doi":"10.1080/03071375.2021.2022326","DOIUrl":"https://doi.org/10.1080/03071375.2021.2022326","url":null,"abstract":"ABSTRACT Cities play important roles in the conservation of global biodiversity and climate change mitigation, particularly through the planning and management of urban green spaces. Bhubaneswar is a rapidly urbanising city and is witnessing a decline in its green status. This study aims to understand the current species composition and structure in selected urban parks. These urban parks are also reservoirs of carbon stock; and the study estimates park biomass and biomass carbon stocks. We documented 48 species belonging to 44 genera and 22 families in this study. The population structure in the parks revealed that most of the parks lacks trees in the sapling category and hence the regeneration potential is lacking. This may be because of the plantation of various tree species in different planting years. We found the carbon stock ranging from 13.48 Mg in an area of 0.22 ha in SV Park, to 479.49 Mg in an area of 8.91 ha in BP Park. On average, we estimated the biomass per ha to be 32.85 Mg. The difference in carbon stock among the considered parks result from difference in park size, species composition, and structure. Local authorities can use the current assessment of species composition and carbon stock to safeguard the existing trees and prioritise the planting effort in these urban parks.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"197 1","pages":"72 - 83"},"PeriodicalIF":0.0,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82684456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-07DOI: 10.1080/03071375.2022.2030620
Alexander J. Elton, Richard W. Harper, Lauren F. Bullard, E. Griffith, B. Weil
ABSTRACT This article presents the results of a literature review related to volunteerism in urban forestry in the United States. Themes explored were inductively emergent from the research reviewed and included ‘volunteer demographics’, ‘motivations of volunteers’, ‘benefits of volunteering’, ‘volunteer engagement and barriers’, ‘value of volunteering’, and ‘volunteer recruitment and retention’. Urban forestry volunteers are often motivated by personal, social, and environmental considerations. Volunteers in urban forestry may not be representative of a cross-section of the communities that they are serving, rather they are often middle-aged, well-educated white women. Further research is required both to ascertain barriers to volunteerism and to enhance future volunteer recruitment and retainment efforts. Volunteers in the United States account for 5% of municipal tree care in urban forests – accounting for an estimated $35 million USD in value. Volunteers perform critical urban forestry-related tasks that aim to increase urban tree canopy cover through tree selection and planting efforts. Volunteers encourage urban tree survival by advocating for, as well as performing, important maintenance-related duties including the administration of supplemental watering and urban tree pruning. With proper training and support, volunteers may accurately perform important data collection efforts that may inform management decisions and urban tree care maintenance programmes.
{"title":"Volunteer engagement in urban forestry in the United States: reviewing the literature","authors":"Alexander J. Elton, Richard W. Harper, Lauren F. Bullard, E. Griffith, B. Weil","doi":"10.1080/03071375.2022.2030620","DOIUrl":"https://doi.org/10.1080/03071375.2022.2030620","url":null,"abstract":"ABSTRACT This article presents the results of a literature review related to volunteerism in urban forestry in the United States. Themes explored were inductively emergent from the research reviewed and included ‘volunteer demographics’, ‘motivations of volunteers’, ‘benefits of volunteering’, ‘volunteer engagement and barriers’, ‘value of volunteering’, and ‘volunteer recruitment and retention’. Urban forestry volunteers are often motivated by personal, social, and environmental considerations. Volunteers in urban forestry may not be representative of a cross-section of the communities that they are serving, rather they are often middle-aged, well-educated white women. Further research is required both to ascertain barriers to volunteerism and to enhance future volunteer recruitment and retainment efforts. Volunteers in the United States account for 5% of municipal tree care in urban forests – accounting for an estimated $35 million USD in value. Volunteers perform critical urban forestry-related tasks that aim to increase urban tree canopy cover through tree selection and planting efforts. Volunteers encourage urban tree survival by advocating for, as well as performing, important maintenance-related duties including the administration of supplemental watering and urban tree pruning. With proper training and support, volunteers may accurately perform important data collection efforts that may inform management decisions and urban tree care maintenance programmes.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"56 1","pages":"96 - 117"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75195817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-06DOI: 10.1080/03071375.2022.2031536
Tom Coxhead, D. Slater
ABSTRACT Urban coppice management is a sustainable form of woodland management. Coppicing has the potential to provide renewable sources of fuel and wood products, increase the biodiversity of urban woodlands, create jobs and volunteering opportunities whilst reducing the carbon footprint of urban communities. Despite these extensive benefits, literature specifically addressing urban coppice management is sparse and, as a practice, it is far from commonplace. This study investigated the potential for increasing urban coppice management in the UK. Two separate research strands assessed the physical woodland resource and the human resource that are both essential for urban coppice management to flourish. First, an evaluation of woodland resources was conducted across twenty-four sites in four urban regions: Bristol, Cambridge, Manchester and Milton Keynes. Seventeen of these sites were identified as having strong potential for urban coppice management. Second, five UK-based urban coppice workers were surveyed, with their responses highlighting that the key challenges for urban coppice workers were earning a fair wage, a lack of coppice industry representation, a lack of understanding of coppice practice, animal browsing of coppice and the costs/stresses of urban living. Common opportunities identified by respondents included social engagement, volunteering and outdoor education, the large potential customer base, and the provision of sustainable produce within a local economy. We conclude by identifying key factors that are likely to affect any expansion of urban coppicing in the UK.
{"title":"Evaluating the potential for increased urban coppice management in the UK","authors":"Tom Coxhead, D. Slater","doi":"10.1080/03071375.2022.2031536","DOIUrl":"https://doi.org/10.1080/03071375.2022.2031536","url":null,"abstract":"ABSTRACT Urban coppice management is a sustainable form of woodland management. Coppicing has the potential to provide renewable sources of fuel and wood products, increase the biodiversity of urban woodlands, create jobs and volunteering opportunities whilst reducing the carbon footprint of urban communities. Despite these extensive benefits, literature specifically addressing urban coppice management is sparse and, as a practice, it is far from commonplace. This study investigated the potential for increasing urban coppice management in the UK. Two separate research strands assessed the physical woodland resource and the human resource that are both essential for urban coppice management to flourish. First, an evaluation of woodland resources was conducted across twenty-four sites in four urban regions: Bristol, Cambridge, Manchester and Milton Keynes. Seventeen of these sites were identified as having strong potential for urban coppice management. Second, five UK-based urban coppice workers were surveyed, with their responses highlighting that the key challenges for urban coppice workers were earning a fair wage, a lack of coppice industry representation, a lack of understanding of coppice practice, animal browsing of coppice and the costs/stresses of urban living. Common opportunities identified by respondents included social engagement, volunteering and outdoor education, the large potential customer base, and the provision of sustainable produce within a local economy. We conclude by identifying key factors that are likely to affect any expansion of urban coppicing in the UK.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"68 1","pages":"209 - 233"},"PeriodicalIF":0.0,"publicationDate":"2022-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85135751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-02-27DOI: 10.1080/03071375.2022.2030603
Ryan W. Klein, Christopher L. Dutton, Andrew K. Koeser
ABSTRACT Most tree risk assessment methods task the assessor with the evaluation of a tree’s likelihood of impact (i.e. likelihood a target is present during failure) when determining the probability that an adverse event will occur. While this is generally accomplished qualitatively based on visual cues; during the 15 to 20 minutes an assessor is at a location, site occupancy, a key component of likelihood of impact, is most accurately measured using traffic counters. The use of traffic counters reduces risk assessment bias and increases reproducibility, though commercially-available devices may be cost-prohibitive. This work addresses one potential barrier to traffic counter adoption through the creation of a low-cost vehicle and pedestrian counting system. The study compares the accuracy and consistency of our homemade traffic counting system to estimates derived from a commercially available system, as well as vehicle and pedestrian counts tallied with a hand clicker. Vehicle and pedestrian counts from the commercially available systems (p = 0.004 and p < 0.001, respectively) correlated well (r = 0.846 and r = 0.896, respectively) with the hand-tallied counts, but the homemade counters were not correlated with either. However, pedestrian counts from the homemade counter became inaccurate as afternoon temperatures went above 31.7°C.
{"title":"Development of a low-cost traffic counter for assessing likelihood of impact for tree risk assessment","authors":"Ryan W. Klein, Christopher L. Dutton, Andrew K. Koeser","doi":"10.1080/03071375.2022.2030603","DOIUrl":"https://doi.org/10.1080/03071375.2022.2030603","url":null,"abstract":"ABSTRACT Most tree risk assessment methods task the assessor with the evaluation of a tree’s likelihood of impact (i.e. likelihood a target is present during failure) when determining the probability that an adverse event will occur. While this is generally accomplished qualitatively based on visual cues; during the 15 to 20 minutes an assessor is at a location, site occupancy, a key component of likelihood of impact, is most accurately measured using traffic counters. The use of traffic counters reduces risk assessment bias and increases reproducibility, though commercially-available devices may be cost-prohibitive. This work addresses one potential barrier to traffic counter adoption through the creation of a low-cost vehicle and pedestrian counting system. The study compares the accuracy and consistency of our homemade traffic counting system to estimates derived from a commercially available system, as well as vehicle and pedestrian counts tallied with a hand clicker. Vehicle and pedestrian counts from the commercially available systems (p = 0.004 and p < 0.001, respectively) correlated well (r = 0.846 and r = 0.896, respectively) with the hand-tallied counts, but the homemade counters were not correlated with either. However, pedestrian counts from the homemade counter became inaccurate as afternoon temperatures went above 31.7°C.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"6 5","pages":"49 - 71"},"PeriodicalIF":0.0,"publicationDate":"2022-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72466832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-02-07DOI: 10.1080/03071375.2022.2030611
F. Ibrahim, Funmi A. Aderounmu, O. O. Akintola
ABSTRACT The need for urban greening is more evident in the African context because Africa is poised to become the global hub of urbanisation. This makes it crucial especially for urban African dwellers to be favourably disposed towards tree-planting. The socio-ecological model (SEM) affords a fine framework for understanding the importance of psychosocial and cultural variables. Hence, a socio-ecological model of Readiness to Plant Trees (RPT) which encompasses self-efficacy, interpersonal drive towards tree-planting, perceived prevalence of tree-planting and ethnic attitudes towards tree-planting was developed and tested. Data collection, using survey design and composite measures, featured a self-administered structured-questionnaire among 400 randomly sampled federal civil servants in Ibadan, Nigeria. Stepwise multiple linear regression was used to evaluate the predictors and correlates of RPT. Interpersonal drive and ethnic attitudes were significant predictors and explained 34.3% of the variation in RPT (multiple R = 0.585; R2 = 0.343; p < 0.001). Perceived prevalence is not a significant predictor, but it has a significant and positive relationship with RPT. Self-efficacy is not a significant predictor and also maintained an insignificant and negative relationship with RPT. This partly-novel socio-ecological model of RPT is largely apt in explaining and ultimately instilling RPT.
{"title":"Predicting readiness to plant trees in urban settings: an adaptation of the ecological model among a cohort of nigerian workers","authors":"F. Ibrahim, Funmi A. Aderounmu, O. O. Akintola","doi":"10.1080/03071375.2022.2030611","DOIUrl":"https://doi.org/10.1080/03071375.2022.2030611","url":null,"abstract":"ABSTRACT The need for urban greening is more evident in the African context because Africa is poised to become the global hub of urbanisation. This makes it crucial especially for urban African dwellers to be favourably disposed towards tree-planting. The socio-ecological model (SEM) affords a fine framework for understanding the importance of psychosocial and cultural variables. Hence, a socio-ecological model of Readiness to Plant Trees (RPT) which encompasses self-efficacy, interpersonal drive towards tree-planting, perceived prevalence of tree-planting and ethnic attitudes towards tree-planting was developed and tested. Data collection, using survey design and composite measures, featured a self-administered structured-questionnaire among 400 randomly sampled federal civil servants in Ibadan, Nigeria. Stepwise multiple linear regression was used to evaluate the predictors and correlates of RPT. Interpersonal drive and ethnic attitudes were significant predictors and explained 34.3% of the variation in RPT (multiple R = 0.585; R2 = 0.343; p < 0.001). Perceived prevalence is not a significant predictor, but it has a significant and positive relationship with RPT. Self-efficacy is not a significant predictor and also maintained an insignificant and negative relationship with RPT. This partly-novel socio-ecological model of RPT is largely apt in explaining and ultimately instilling RPT.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76330158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-23DOI: 10.1080/03071375.2021.2014706
M. Fitria, E. Cheong, A. Solikhin, M. I. Firdaus, Daniel Burke- Ward
ABSTRACT This study examines Indonesian urban forest policy, practice, and potential with reference to forest composition and bioenergy potential. The results showed that there are challenges in the implementation of urban forest policies into urban forest practices. For example, the land size allocation for urban forests in Jakarta, Surabaya, and Malang is still not in accordance with the existing policies as their land size is far less than 10% of these total areas. Predominant tree species in Indonesian urban forestry are Pterocarpus indicus, Delonix regia, Polyalthia longifolia, Lagerstroemia speciosa, Mimusops elengi, Samanea saman, Tectona grandis, Ficus benjamina, Mangifera indica, and Tamarindus indica. These trees are considered as multipurpose species that can be utilised for bioenergy, wood-based furniture, food and foraging, medicine, and many other uses. Aside from firewood and charcoal, these trees should be explored for their potential as biofuel, biogas, bio-pellet, and electricity generation. Bioenergy potential of urban forest trees can be an important consideration for the Government of Indonesia to actualise the potential of the urban forest and to create energy-independent cities.
{"title":"Indonesian urban forest policies, practice and bioenergy potential of urban forest tree species","authors":"M. Fitria, E. Cheong, A. Solikhin, M. I. Firdaus, Daniel Burke- Ward","doi":"10.1080/03071375.2021.2014706","DOIUrl":"https://doi.org/10.1080/03071375.2021.2014706","url":null,"abstract":"ABSTRACT This study examines Indonesian urban forest policy, practice, and potential with reference to forest composition and bioenergy potential. The results showed that there are challenges in the implementation of urban forest policies into urban forest practices. For example, the land size allocation for urban forests in Jakarta, Surabaya, and Malang is still not in accordance with the existing policies as their land size is far less than 10% of these total areas. Predominant tree species in Indonesian urban forestry are Pterocarpus indicus, Delonix regia, Polyalthia longifolia, Lagerstroemia speciosa, Mimusops elengi, Samanea saman, Tectona grandis, Ficus benjamina, Mangifera indica, and Tamarindus indica. These trees are considered as multipurpose species that can be utilised for bioenergy, wood-based furniture, food and foraging, medicine, and many other uses. Aside from firewood and charcoal, these trees should be explored for their potential as biofuel, biogas, bio-pellet, and electricity generation. Bioenergy potential of urban forest trees can be an important consideration for the Government of Indonesia to actualise the potential of the urban forest and to create energy-independent cities.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"8 1","pages":"99 - 121"},"PeriodicalIF":0.0,"publicationDate":"2022-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84230810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-06DOI: 10.1080/03071375.2021.2014696
Abel Feyisa, M. Negash, Yoseph Melka
ABSTRACT Urbanisation tends to alter the ecosystem. Urban green spaces are established to reduce impacts of urbanisation. However, in developing regions, this is often neglected. Hawassa city, Ethiopia, is greatly affected by rapid urbanisation. Hence, this study’s aim was to assess the role of green infrastructure in woody species diversity and carbon stock in Hawassa city. A cluster sampling methodwas used to classifythe existing green infrastructure. Two hundred and forty sample plots were used to compile a woody species inventory and for soil sampling. Fifty eight woody species belonging to 44 genera and 28 families were recorded; 67.25% of these were exotics. The highest Shannon–Wiener diversity was in private and public institution compounds (mean 1.35) and the least was street trees (0.68). The highest mean biomass carbon was recorded in street trees (167.5 t C ha−1) and the lowest in urban forest (11.4 t C ha−1). Soil organic carbon accounted for 90% of ecosystem carbon stocks for urban forest, 60% for private public institution, 57% for urban church forest and 37% for street trees. Generally, there is lower species diversity, a dominance of exotic species. Planting diverse and indigenous species should be the next priority.
城市化往往会改变生态系统。城市绿地的建立是为了减少城市化的影响。然而，在发展中地区，这一点往往被忽视。埃塞俄比亚的哈瓦萨市深受快速城市化的影响。因此，本研究的目的是评估绿色基础设施对哈瓦萨市木本物种多样性和碳储量的作用。采用聚类抽样方法对现有绿色基础设施进行分类。240个样地用于编制木本物种清单和土壤取样。记录到木本植物58种，隶属于28科44属;其中67.25%为外来品。Shannon-Wiener多样性最高的是公私机构群落(平均1.35)，最低的是行道树(平均0.68)。平均生物量碳最高的是行道树(167.5 t C ha - 1)，最低的是城市森林(11.4 t C ha - 1)。土壤有机碳占城市森林生态系统碳储量的90%，占公私机构生态系统碳储量的60%，占城市教堂森林生态系统碳储量的57%，占行道树生态系统碳储量的37%。总体上物种多样性较低，外来物种占优势。种植多样化和本地物种应该是下一个优先事项。
{"title":"Urban green infrastructure affects woody plant diversity and carbon stock in Hawassa city in Ethiopia","authors":"Abel Feyisa, M. Negash, Yoseph Melka","doi":"10.1080/03071375.2021.2014696","DOIUrl":"https://doi.org/10.1080/03071375.2021.2014696","url":null,"abstract":"ABSTRACT Urbanisation tends to alter the ecosystem. Urban green spaces are established to reduce impacts of urbanisation. However, in developing regions, this is often neglected. Hawassa city, Ethiopia, is greatly affected by rapid urbanisation. Hence, this study’s aim was to assess the role of green infrastructure in woody species diversity and carbon stock in Hawassa city. A cluster sampling methodwas used to classifythe existing green infrastructure. Two hundred and forty sample plots were used to compile a woody species inventory and for soil sampling. Fifty eight woody species belonging to 44 genera and 28 families were recorded; 67.25% of these were exotics. The highest Shannon–Wiener diversity was in private and public institution compounds (mean 1.35) and the least was street trees (0.68). The highest mean biomass carbon was recorded in street trees (167.5 t C ha−1) and the lowest in urban forest (11.4 t C ha−1). Soil organic carbon accounted for 90% of ecosystem carbon stocks for urban forest, 60% for private public institution, 57% for urban church forest and 37% for street trees. Generally, there is lower species diversity, a dominance of exotic species. Planting diverse and indigenous species should be the next priority.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"31 1","pages":"84 - 98"},"PeriodicalIF":0.0,"publicationDate":"2022-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74615165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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