Many of Africa's ecosystems are not just serving the region, but the whole world, for example, through the carbon soaking value of tropical forests. This alone probably equals or exceeds the current or exceeds the current level of international aid being provided to developing countries.
Links
[1] https://www.pambazuka.org/author/contributor
[2] https://www.pambazuka.org/taxonomy/term/3298
[3] https://www.pambazuka.org/article-issue/269
[4] https://www.pambazuka.org/taxonomy/term/3288
[5] http://www.pambazuka.org/en/category.php/environment/36903