Editor's note: Ellen Johnson Sirleaf is a former President of Liberia and a member of the Campaign for Nature's Global Steering Committee. The article reflects the author's opinions and not necessarily the views of CGTN.

My work has taken me far and wide, across oceans and vast expanses of land, and I have been lucky enough to see firsthand some of the richest biodiversity hotspots on Earth. But at the end of the day, I always return home – to Liberia, to Africa, which offers the most extraordinary natural landscape and wildlife. The African continent is undoubtedly the planet's biodiversity powerhouse.

Writing about Africa's natural capital doesn't do it justice. How can one describe a quarter of global biodiversity – including at least 50,000 plant species, some 1,000 different mammals, 2,500 types of birds, and up to 5,500 varieties of freshwater fish – in a few words? It's the same with Liberia: My country is home to large swaths of the Upper Guinean Forests, which is among the world's foremost regions for mammalian diversity. It includes hundreds of thousands of hectares of freshwater wetlands and over six million hectares of forests, which are vital for the survival of endangered fauna and flora, as well as for local communities' well-being.

Given its abundance of natural capital, the continent stands to lose disproportionately from biodiversity collapse. When human activity pushes animal and plant species close to extinction and throws ecosystems out of balance, it also puts important valuable natural resources at risk: Africa's diverse biomes play a crucial role in global pharmaceutical innovation, ecotourism, and crop pollination.

Moreover, despite contributing only 3 percent to global greenhouse-gas emissions, Africa suffers disproportionately from the effects of a warming planet, losing up to $15 billion per year to climate change. Biodiversity loss exacerbates the problem by threatening the continent's rainforests, an important carbon sink. And, given African economies' dependence on natural resources and ecosystem services, it also impedes growth and development.

That is why Africa has been at the forefront of biodiversity conservation efforts, and climate action more generally. The continent is increasingly calling attention to the issue and leading the charge at negotiations, most recently at December's United Nations Biodiversity Conference (COP15) in Montreal. Several African states, including Liberia, have also held developed countries accountable for their existing commitments at these international summits.

The talks at COP15 were ultimately successful, culminating in the adoption of the historic Kunming-Montreal Global Biodiversity Framework. One of its many ambitious targets is to protect 30 percent of the world's land and oceans by 2030. Also called "30x30," it is a proposal that many in Liberia – including me, as a member of the Campaign for Nature's Global Steering Committee – have long championed. Governments also committed to increasing the annual biodiversity-related financing that developed countries provide to developing countries to at least $20 billion by 2025, and at least $30 billion by 2030.

Six months after this landmark agreement, we need to maintain momentum and make good on these pledges. As the staggering decline in nature and wildlife continues unabated, now is not the time to falter. The theme of this year's International Day for Biological Diversity (celebrated each year on May 22), "From Agreement to Action: Build Back Biodiversity," is a timely and powerful reminder of the urgent need to act quickly on the commitments made at COP15 and to shift our focus and energy from imagination to implementation. The recent G7 Summit in Hiroshima, where world leaders reaffirmed their commitment to the Kunming-Montreal framework, was a welcome step in the right direction.

But governments must deliver on their pledges to mobilize public finance if we want to achieve the "30x30" goal of halting and reversing biodiversity loss. The funding will provide a lifeline for the world's ecosystems and plant and animal species, as well as some of the world's most vulnerable populations – particularly indigenous peoples and rural communities – whose livelihoods depend on their local natural capital.

The global community has a history of breaking its word and shifting the goalposts agreed to in past climate and biodiversity deals. But the promise to increase international financing to developing countries must be kept. As global warming intensifies, we can no longer tolerate the repercussions of another deal like the one reached at the 2009 UN climate summit, which turned out to be mostly hot air.

World leaders have an opportunity to be on the right side of history. But any delay in meeting the targets set at COP15 will undermine this landmark agreement. The resources are there. After rapidly mobilizing trillions of dollars in response to the COVID-19 pandemic, developed countries should be able to move with the same speed to finance biodiversity conservation efforts. Their investments would yield significant dividends in developing countries, from supporting millions of jobs and generating billions of dollars in GDP to significantly reducing greenhouse-gas emissions.

The moment has come for decision-makers at all levels in developed countries to deliver their end of the bargain. Let us not waste this last chance to preserve the planet's natural wealth. If we can get this right, Africa – and the world – will be better for it.

Copyright: Project Syndicate, 2023.

(If you want to contribute and have specific expertise, please contact us at opinions@cgtn.com. Follow @thouse_opinions on Twitter to discover the latest commentaries in the CGTN Opinion Section.)