SDG #15 is to “ Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss”
Within SDG #15 are 12 targets, of which we here focus on Target 15.a:
Mobilize and significantly increase financial resources from all sources to conserve and sustainably use biodiversity and ecosystems
Target 15.a has one indicator:
Indicator 15.a.1: (a) Official development assistance on conservation and sustainable use of biodiversity; and (b) revenue generated and finance mobilized from biodiversity-relevant economic instruments
This target measures what level of aid from high-income donor countries of the OECD goes toward biodiversity. The biggest recipient as of 2021 is Colombia, receiving $909 million, followed by Mexico, Tanzania, and Indonesia.
The biggest donors for biodiversity foreign aid to developing countries were France and Germany. Each donated around $2.5 billion.