All-sector economic output projected when implementing (or not implementing) the 30% target A. Projected "all-sector" economic output in 2050. (All-sector output is the sum of all outputs across the four economic sectors affected by the 30% target: PA/Nature, Agriculture, Forestry, and Fisheries). All six scenarios for PA expansion are shown and compared to no-PA-expansion: REF = no-expansion scenario, THC = Three Conditions, HPR = Harsh Political Reality, BIWI = Biodiversity/Wilderness Consensus, BPC = Biodiversity/Production Compromise, SSE = Save Species from Extinction, GDN = Global Deal for Nature. B. Projected % increase/decrease in the all-sector output if 30%-target scenarios are implemented (by 2050). Credit: Protecting 30% of the planet for nature: costs, benefits and economic implications, Conservation International

Protecting 30% of the world's land and sea outweigh the costs by a ratio of 5 to 1, according to a new report.

Co-authored by more than 100 economists and scientists, including Conservation International leadership council member and renowned ecologist Thomas Lovejoy, the report explored the impacts of protected areas and across a variety of sectors, including agriculture, fisheries and .

Completing the most comprehensive economic analysis of its kind, the authors discovered that protecting around one-third of land and sea could provide an of between US$ 64 billion and US$ 454 billion a year by 2030. Additionally, they found that protecting forests and mangroves could prevent from climate change by up to US$ 534 billion annually by 2050.

"There is a large financial return if we protect 30% of terrestrial and marine nature," Lovejoy said. "Protecting the goose does indeed produce golden eggs."

The authors determined that increasing nature protection could also help slow , reduce pollution and decrease water insecurity in .

Yet just 15% of the world's land and 7% of the sea is currently protected—and these areas have shrunk since the COVID-19 pandemic began: According to recent research, protected areas have been weakened on nearly every continent in recent months to allow for development or mining.

To obtain the highest possible economic benefits from nature, countries must invest at least US$ 140 billion per year by 2030 in strengthening and expanding protected areas, which currently only receive US$ 24 billion annually in funding, the report states.

"This new report provides exactly the type of data that we and other countries need. It gives us a concrete idea of how much it would cost to protect at least 30% of the planet's land and ocean and, more importantly, it tells us that the benefits of this protection far outweigh the ," said Carlos Manuel Rodriguez, the Costa Rican Environment and Energy Minister and incoming CEO of the Global Environment Facility.

"Now that we know what is needed, all countries must increase their financial commitments and work with businesses and philanthropies to increase investment in the protection of nature."