At dawn, the mist-filled Xiazhu Lake National Wetland Park in Deqing county, Huzhou, East China's Zhejiang province, comes alive with the flutter of the wings of crested ibises.

"Ten years ago, crested ibis chicks arrived trembling, and now 669 ibises call this place home," said a local ecological ranger, observing a pair feeding their chicks through his binoculars.

The transformation of this species from endangered to thriving is a testament to Deqing's decade-long dedication to the conservation of the water ecosystem.

Lush mountains and lucid waters form stunning scenery in Deqing county. [Photo/WeChat account: deqingfabu]

The county has created an underwater forest in a 3.4-square-kilometer area, using algae-eating insects to restore the ecosystem and elevating water quality to Class II standards. The Xiazhu Lake Wetland alone adds nearly 10,000 metric tons of carbon sequestration annually, setting a global example in endangered species protection.

Such ecological restoration benefits both the urban and the rural areas. New boardwalks and platforms around the local Jin'e Lake attract morning exercisers and tourists alike. Indeed, Deqing has exceeded its annual water management improvement goals, and its villages have become more beautiful with improved water ecosystem.

A "smart water network" system ensures the clarity of these waters. Utilizing satellite imaging, AI, and drones, Deqing has resolved numerous water management issues, supporting both the vibrant birdwatching economy and waterfront tourism.

In Deqing, water ecotourism generated revenue of 1.47 billion yuan ($204.8 million) last year, boosting local economic growth substantially.