Table 5 - uploaded by Jean-Baptiste Ndamiyehe
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Improving the urban environmental quality relies mainly on the increasing of urban forests capacity to store carbon dioxide. This study assesses the floristic diversity of urban institutional lands in Bukavu and their potential to reduce atmospheric CO2. An exhaustive inventory over three sites (Collège Alfajiri, Cathédrale Notre-Dame de la Paix an...
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... sequestered in the aboveground biomass of coni- fers and broadleaves and the amount of CO 2 fixed from the atmosphere in each institutional site are detailed in Table 5. Data reveal a wide variability of both parameters values within and among institutional sites. ...
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... reveal a wide variability of both parameters values within and among institutional sites. For the three study sites (S-ISP, S-ND and S-CA), the total carbon stored amounted to 312.8 tons, being equivalent to 1,147.9 tons of CO 2 fixed from the atmosphere (Table 5). ...
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... the amount of carbon stored differs from one species to another due to their own characteristics, among which the DBH remains important (Table 5). Thus, the amount of carbon stored at the ISP site is the highest of all study sites and is more than twice that in S-ND. ...
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... Collège Alfajiri site, the equivalent of total CO 2 fixed from the atmosphere by conifers amounted to 52.3 tons mainly from two species, Cupressus lusitanica and Podocarpus usambarensis. However, broadleaves reveal a potential of carbon of nearly 93.1 tons equivalent to 341.8 tons of CO 2 ( Table 5). Species with the greatest stocks in S-CA are Albizia gummifera, Ficus exasperata and Grevillea robusta holding 42.1% of total carbon storage within. ...
Citations
... The concept has emerged since the end of the 19th century in developed countries (Larouche, 2016), while in developing countries, studies on this topic are only at their embryonic stage [14,30]. In the DRC, the topics addressed have determined the contribution of fruit trees to food security [18], assessed tree biomass [11], analyzed spatial dynamics [13,27,32], characterized tree vegetation and green spaces [26,28]. However, very few studies have focused on people's perceptions of urban and peri-urban forestry. ...
The city of Kinshasa, capital of the Democratic Republic of Congo, is currently experiencing unprecedented urban and peri-urban development, which is reflected in the degradation and loss of vegetation cover. There is a real need to conduct sociological studies on trees to help leaders in their decision-making. This research aims to analyze the perception of the population on the role of trees in the peri-urban area of the city of Kinshasa. The data were collected through a survey conducted in the Kinkole neighborhood, located in the eastern part of the city. A total of 321 residential plots were sampled between September and November 2017 to conduct semi-structured individual interviews. After compilation, the collected information was synchronized and then analyzed using Excel software to produce relative and absolute frequencies. The results obtained show that trees are primarily planted for economic, food, shade, and pharmacopoeia needs. The trees planted in the plots are mostly fruit trees, of which three species alone account for more than two-thirds of the planting. These are the mango tree (Mangifera indica) with 31.3% of trees planted, followed by the avocado tree (Persea americana) representing 31.1% of the plantation and then the safflower tree (Dacryodes edulis) representing 25.7%. The seedlings of these trees come mainly from consumed seeds. However, nearly half of the residents feel that they do not need to add other trees to their plots due to lack of space or property rights. These results reveal the urgency of promoting urban and peri-urban forestry through the development of a policy and strategies for the adequate management of peri-urban spaces in the city of Kinshasa. This is in order to improve the quality of life of the human population in order to face the current challenges related to the effects of climate change in urban and peri-urban areas.
Street trees are always considered a vital part of urban green infrastructure in urbanized areas through mitigating the negative effects caused by urbanization taking part in human well-being.
However, little is still known about their diversity, structure and protection, mostly in Lubumbashi city in the Democratic Republic of the Congo (DR Congo), where the pace of urbanization is not
only rapid but also unplanned. In this study, using an inventory, we have characterized the diversity, structure and protection measures of street trees along a land-use planning gradient in Lubumbashi
for both planned and unplanned neighborhoods. From the results, a total of 1596 trees were encountered, comprising 40 species, 33 genera and 17 families, mostly dominated by exotic species
(65%). In addition, most of the studied trees (63%) belonged to four species only (Jacaranda mimosifolia, Leucaena leucocephala, Mangifera indica, and Acacia auriculiformis) with Leucaena leucocephala and Jacaranda mimosifolia being highly represented in unplanned and planned neighborhoods, respectively. The most abundant diameter classes in the planned neighborhoods were those with at most 10 cm against the classes larger than 50 cm in the planned neighborhoods. In both neighborhoods, trees with protection equipment represent less than 35%. Furthermore, in planned neighborhoods notably, nearly half of the observed equipment is in a good condition. Despite the benefits associated with street trees, there is a need to reduce the proportion of exotic tree species by planting native utilitarian tree species.
Urban forests help regulating flow of ecosystem services and are efficient to sequester atmospheric carbon. Tree carbon stock in urban forests and green spaces can help improving human well-being. Nagpur being one of the fastest growing urban agglomerate in India that has faced rapid loss of green spaces in last three decades. Present study assessed tree biomass carbon storage potential of a historically conserved large (67.41 ha) Seminary Hills Reserve forest of Nagpur. A total of 150 quadrats of 100 m2 were laid to understand the vegetation structure and tree biomass storage. Overall structure and composition of the forest was assessed while, non-destructive biomass estimation was carried out using tree volume eqs. A total of 27 tree species belonging to 12 plant families were observed from the forest with only 6 tree species being dominant and remaining 21 being rare in occurrence. The maximum tree carbon storage was observed in dominant tree species of Hardwickia binata (76.30 t C ha−1) followed by 17.04 t C ha−1 in Tectona grandis and 1.19 t C ha−1 in Boswellia serrata. Carbon stock in other co-dominant species was reported in Terminalia bellirica (76.57 kg C ha−1), Gardenia resinifera (1118.6 g C ha−1) and Terminalia arjuna (84.8 g C ha−1). Total carbon stock of dominant tree species present in Seminary Hills urban forest was 94.53 ± 39.6 t C ha−1. The study intends to bring focus ecosystem benefits from Urban Forests in growing urban sprawls of India and the need to include their vital role in urban planning.
