KUALA LUMPUR (THOMSON REUTERS FOUNDATION) - A growing global push to safeguard nature by pledging to protect about a third of the planet's land and oceans by 2030 will fall short unless biodiversity-rich South-east Asian nations get behind the ambitious proposal, environmentalists have warned. Leaders of the Group of Seven wealthy nations this month backed a coalition of about 60 countries that have already promised to conserve at least 30 per cent of their land and oceans by 2030 - a goal dubbed 30x30 - to curb climate change and the loss of plant and animal species. Cambodia is the only South-east Asian nation to have signed up to the goal so far, although the initiative has been endorsed by countries in other parts of the Asia-Pacific, including Japan, Pakistan and the Maldives.