Luxury travel: Sustained and sustainable

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These days, responsible travel is practically a requirement. With the UN declaring 2017 as the International Year of Sustainable Tourism for Development, every last luxury hotel, resort, cruise line and tour operator is upping its ecological game.

There are three main tenets of sustainable travel, beginning with the utilisation of environmentally friendly practices. Increasingly, new resorts are "low impact": take new Indonesian private island Bawah, which opens this summer. The tented villas are being constructed without heavy machinery and the guest-count will not exceed 70 despite having 13 separate, sublime beaches. Then there's extravagant new villa Casa Xixim, Mexico, which is powered by a photovoltaic canopy, insulated by rooftop plants and bordering an artificial wetlands system able to catch water waste.

Cruising firms are similarly resolved. Royal Caribbean has committed to reducing its opulent ships' carbon emissions by using scrubbers to clean up exhaust systems. Long-term, the entire fleet will also serve seafood solely from eco-certified farms and avoid overfished species such as swordfish.

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Another key strand of sustainability relates to protecting heritage. In the safari world, that means conservation. Plenty of animals are in danger: lion and elephant populations are plummeting, while big-cat charity Panthera recently stated that cheetahs are now endangered. Lovers of the world's fastest land animal can spend a week aiding cheetah-conservation charity Africat within a wider, 13-day Namibia safari with Steppes Travel, which offers a range of trips to redress the balance.

Cultural interaction is a growing focus for hotels. Just opened in the Maldives, local-owned Milaidhoo Island resort has the usual butlers, beaches and barefoot luxury, but also highlights the archipelago's traditions via bespoke experiences: cooking Maldivian recipes, joining fisherman or learning to build Dhoni boats.

Responsible tourism should also boost communities. The 1 Hotel brand promotes local materials and this February, it's opening its third New York City property by the Brooklyn Bridge, which will display native greenery and reclaimed walnut wood from the Brooklyn Botanic Garden. In Rwanda, Wilderness Safaris' forthcoming Bisate Lodge will sell only locally produced items in its gift shop, all while reforesting 66 acres of habitat for mountain gorillas.

But no forthcoming hotel scores more preservation points than the imminent Aman Shanghai. Scheduled to open in late 2017, it has seen 50 historic Ming and Qing dynasty dwellings – threatened by the construction of a reservoir – disassembled, relocated 500 miles across China and painstakingly restored, along with 10,000 camphor trees. The project has taken 11 years to date; corporate responsibility doesn't come much more impressive.