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Assessing the conservation status, biodiversity potentials and economic contribution of urban tree Ecosystems in Nigerian Cities
Urban Ecosystems ( IF 2.9 ) Pub Date : 2021-07-05 , DOI: 10.1007/s11252-021-01137-z
Aladesanmi Daniel Agbelade 1 , Adebayo Adeleke John 1 , Johnson Adedayo 1 , Jonathan Chukwujekwu Onyekwelu 2 , Tunrayo Alabi 3
Affiliation  

We investigated conservation status, biodiversity potentials and economic contribution of urban tree Ecosystems in Nigerian cities. A total of 32 families were encountered respectively in Makurdi (17), Ilorin (18) and Lokoja (25) urban forests. The diversity index, richness and evenness of the tree species were in the order Ilorin > Lokoja > Makurdi urban forests and decreased as the population of the city increased, suggesting that the urban forests and trees depends on city infrastructure development. About 32% of tree species in the three cities are threatened tree species in Nigeria and based on the IUCN red list. This situation therefore calls for urgent conservation measures. Moreover, results showed a general increasing trend in Normalized Different Vegetation Index (NDVI) value between year 2000 and 2018 for the vegetation cover in each city. The NDVI value for Makurdi was (0.23 to 0.37), Ilorin (0.42 to 0.47), and Lokoja (0.01 to 0.27), which was very low compared to forest cover NDVI. The NDVI could be used to observe the changes in vegetation greenness and the dynamic effects of temperature. The average monthly income obtained by those involved in the sales of urban tree products such as (vegetables, fruits, recreation parks, event centres, amusement parks) ₦20,000 (56 USD) to over ₦50,000 (139 USD) contributed between 40 and 70% to household annual income. This was particularly important in augmenting income from other sources in meeting basic family expenses in the cities.



中文翻译:

评估尼日利亚城市城市树木生态系统的保护状况、生物多样性潜力和经济贡献

我们调查了尼日利亚城市城市树木生态系统的保护状况、生物多样性潜力和经济贡献。在 Makurdi (17)、Ilorin (18) 和 Lokoja (25) 城市森林中分别遇到了 32 个家庭。树种的多样性指数、丰富度和均匀度依次为伊洛林>洛科贾>马库尔迪城市森林,随着城市人口的增加而减少,表明城市森林和树木依赖于城市基础设施的发展。这三个城市中约有 32% 的树种是尼日利亚受威胁的树种,并基于 IUCN 红色名录。因此,这种情况需要采取紧急保护措施。而且,结果表明,2000 年至 2018 年各城市植被覆盖的归一化差异植被指数 (NDVI) 值总体呈上升趋势。Makurdi 的 NDVI 值为(0.23 至 0.37)、Ilorin(0.42 至 0.47)和 Lokoja(0.01 至 0.27),与森林覆盖 NDVI 相比非常低。NDVI 可用于观察植被绿度的变化和温度的动态效应。参与城市树木产品(蔬菜、水果、游乐园、活动中心、游乐园)等销售的人获得的平均月收入为 ₦20,000(56 美元)至 ₦50,000(139 美元)以上,贡献了 40 至 70占家庭年收入的百分比。这对于增加其他来源的收入以满足城市基本家庭开支尤为重要。23 至 0.37)、伊洛林(0.42 至 0.47)和 Lokoja(0.01 至 0.27),与森林覆盖 NDVI 相比非常低。NDVI 可用于观察植被绿度的变化和温度的动态效应。参与城市树木产品(蔬菜、水果、游乐园、活动中心、游乐园)等销售的人获得的平均月收入为 ₦20,000(56 美元)至 ₦50,000(139 美元)以上,贡献了 40 至 70占家庭年收入的百分比。这对于增加其他来源的收入以满足城市基本家庭开支尤为重要。23 至 0.37)、伊洛林(0.42 至 0.47)和 Lokoja(0.01 至 0.27),与森林覆盖 NDVI 相比非常低。NDVI 可用于观察植被绿度的变化和温度的动态效应。参与城市树木产品(蔬菜、水果、游乐园、活动中心、游乐园)等销售的人获得的平均月收入为 ₦20,000(56 美元)至 ₦50,000(139 美元)以上,贡献了 40 至 70占家庭年收入的百分比。这对于增加其他来源的收入以满足城市基本家庭开支尤为重要。参与城市树木产品(蔬菜、水果、游乐园、活动中心、游乐园)等销售的人获得的平均月收入为 ₦20,000(56 美元)至 ₦50,000(139 美元)以上,贡献了 40 至 70占家庭年收入的百分比。这对于增加其他来源的收入以满足城市基本家庭开支尤为重要。参与城市树木产品(蔬菜、水果、游乐园、活动中心、游乐园)等销售的人获得的平均月收入为 ₦20,000(56 美元)至 ₦50,000(139 美元)以上,贡献了 40 至 70占家庭年收入的百分比。这对于增加其他来源的收入以满足城市基本家庭开支尤为重要。

更新日期:2021-07-05
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