Evaluation De La Diversité Et Estimation De La Biomasse Aérienne Des Arbres Du Jardin Botanique De Bingerville (District d’Abidjan, Côte d’Ivoire)

The Bingerville Botanical Garden is an urban green space which can contribute to the quality of the living environment and to attractivity of tourists in Abidjan city. Its floristic diversity and socio-economic and ecological benefits remain still unknown. The present study was conducted to assess botanical species diversity and the reduction of CO2 emissions in this space. Trees species with dbh ≥ 10 cm were recorded in 41 plots of 500 m² surveyed in four types of biotopes: two arboretums with 20 and 100 years old, one secondary forest with more than 100 years and a fallow of 20 years old. Floristic indices and aboveground biomass (AGB) were determined for each biotope. A total of 742 trees with dbh ≥ 10 were counted: 127 species. Preponderance species are Cassia siamea, Terminalia mantaly, Milicia excelsa and Ceiba pentandra in arboretums, Pentadesma butyracea and Acacia mangium in the secondary forest, Ficus exasperata and Borassus aethiopum in the fallow. Arboretums are richest (96 species), and they have more AGB (566.7 t/ha). The secondary forest has 71 species with an aboveground equal to 381.4 t/ha. The fallow is less rich (13 species) with an AGB of 21 t/ha. This study has shown the importance of Bingerville Botanical Garden in plant and fighting against climate change

Paiement Pour Services Ecosystemiques, Instrument D’incitation Au Developpement Des Jardins Publics Et Prives Dans Les Communes De Cocody Et Du Plateau (Abidjan – Côte d’Ivoire)

The public and private green spaces of the communes of Cocody and Plateau of Abidjan city are deteriorating because of lack of financial means for their maintenance. The overall objective of this study is to demonstrate the importance of payments for ecosystem services (PES) in their self-financing. To carry out this study, a survey was conducted among users of 3 public gardens in the Plateau and private garden owners in Cocody. It aimed to identify the willingness to pay (CAP) of users of public gardens for their management and to identify incentives for the creation of private gardens in their own concessions. Analysis of the data reveals a PAC in the form of visiting tax or voluntary donation ranging from 100 FCFA (0.15 €) to 2000 FCFA (3.07 €). Respondents who declare a visiting tax between 100 FCFA and 500 FCFA are the most numerous with a percentage of 92.95. Students, students and unemployed visitors are on the sidelines of visitors who refuse to pay for the management of public gardens. If we stick to the visit fees proposed by the majority of the interviewees, it would be possible to collect 79,800 FCFA (122.76 €) per day for 339,000 FCFA (521.53 €) for all 3 public gardens. With regard to the creation of private gardens, a financial subsidy mechanism could motivate the population. This study demonstrates that the introduction of payments for ecosystem services could be an incentive for the development of green spaces in urban areas