Abstract
This study assesses the carbon sequestration capacity of urban green spaces in Porto-Novo, Benin, and examines the anthropogenic pressures impacting tree species diversity. A comprehensive inventory of 1,340 trees across 39 selected green spaces revealed a dominance of trees in social and educational institutions (35%), followed by public green spaces (19%). Tree diameter analysis showed a significant variation, with an average diameter ranging from 34.11 cm (street trees) to 79.28 cm (cemeteries), indicating the presence of both young and mature trees. The total aboveground biomass (AGB) was estimated at 2,270.42 Mg, corresponding to 1,299.53 Mg of sequestered carbon. Social and educational institutions contributed the most to carbon storage (484.60 Mg, 37%), followed by public green spaces (236.57 Mg, 18%) and landscaped natural areas (179.82 Mg, 14%). However, anthropogenic pressures severely affect tree health, with 154 cases (53.8%) of bark stripping, mainly on Terminalia superba, Terminalia mantaly, and Khaya senegalensis. Pruning (75 cases) and pollarding (44 cases) also impact tree growth and structure. These findings emphasize the need for sustainable urban planning that integrates biodiversity conservation and effective management strategies to enhance carbon sequestration and urban resilience.
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Claims 15
Claim · model-written summary
Trees were most dominant in social and educational institutions, at 35% of the inventoried trees.
Verbatim
t0“tree species”
e1“a dominance of trees in social and educational institutions (35%), followed by public green spaces (19%)”
Claim · model-written summary
Public green spaces held 19% of the inventoried trees, after social and educational institutions.
Verbatim
t0“tree species”
e1“a dominance of trees in social and educational institutions (35%), followed by public green spaces (19%)”
Claim · model-written summary
Average tree diameter varied significantly, with street trees having an average diameter of 34.11 cm.
Verbatim
t0“tree species”
e3“Tree diameter analysis showed a significant variation, with an average diameter ranging from 34.11 cm (street trees) to 79.28 cm (cemeteries)”
Claim · model-written summary
Average tree diameter in cemeteries was 79.28 cm, the largest of the compared categories.
Verbatim
t0“tree species”
e3“Tree diameter analysis showed a significant variation, with an average diameter ranging from 34.11 cm (street trees) to 79.28 cm (cemeteries)”
Claim · model-written summary
Total aboveground biomass of the inventoried trees was estimated at 2,270.42 Mg.
Verbatim
t0“tree species”
e4“The total aboveground biomass (AGB) was estimated at 2,270.42 Mg, corresponding to 1,299.53 Mg of sequestered carbon”
Claim · model-written summary
The inventoried trees sequestered 1,299.53 Mg of carbon.
Verbatim
t0“tree species”
e4“The total aboveground biomass (AGB) was estimated at 2,270.42 Mg, corresponding to 1,299.53 Mg of sequestered carbon”
Claim · model-written summary
Social and educational institutions contributed the most carbon storage, 484.60 Mg (37%).
Verbatim
t0“tree species”
e5“Social and educational institutions contributed the most to carbon storage (484.60 Mg, 37%), followed by public green spaces (236.57 Mg, 18%) and landscaped natural areas (179.82 Mg, 14%)”
Claim · model-written summary
Public green spaces stored 236.57 Mg of carbon (18%), the second-largest share.
Verbatim
t0“tree species”
e5“Social and educational institutions contributed the most to carbon storage (484.60 Mg, 37%), followed by public green spaces (236.57 Mg, 18%) and landscaped natural areas (179.82 Mg, 14%)”
Claim · model-written summary
Landscaped natural areas stored 179.82 Mg of carbon (14%).
Verbatim
t0“tree species”
e5“Social and educational institutions contributed the most to carbon storage (484.60 Mg, 37%), followed by public green spaces (236.57 Mg, 18%) and landscaped natural areas (179.82 Mg, 14%)”
Claim · model-written summary
Bark stripping affected 154 trees (53.8% of the recorded damage cases), mainly on Terminalia superba, Terminalia mantaly and Khaya senegalensis.
Verbatim
t0“tree species”
e6“154 cases (53.8%) of bark stripping, mainly on Terminalia superba, Terminalia mantaly, and Khaya senegalensis”
Claim · model-written summary
Pruning was recorded in 75 cases on the inventoried trees.
Verbatim
t0“tree species”
e7“Pruning (75 cases) and pollarding (44 cases) also impact tree growth and structure”
Claim · model-written summary
Pollarding was recorded in 44 cases on the inventoried trees.
Verbatim
t0“tree species”
e7“Pruning (75 cases) and pollarding (44 cases) also impact tree growth and structure”
Claim · model-written summary
Pruning and pollarding affect tree growth and structure.
Not reportedDirection
Verbatim
t0“tree species”
e7“Pruning (75 cases) and pollarding (44 cases) also impact tree growth and structure”
Claim · model-written summary
Anthropogenic pressures severely affect tree health.
Not reportedDirection
Verbatim
t0“tree species”
e1“anthropogenic pressures severely affect tree health”
Claim · model-written summary
The authors recommend sustainable urban planning that integrates biodiversity conservation and management to enhance carbon sequestration and urban resilience.
Verbatim
t0“tree species”
e1“These findings emphasize the need for sustainable urban planning that integrates biodiversity conservation and effective management strategies to enhance carbon sequestration and urban resilience”