Often referred to as the "kidneys of the Earth", wetlands are unique ecosystems that support a diverse array of terrestrial and aquatic life-forms, functioning as invaluable natural gene banks.

Among the inhabitants of urban wetlands are migratory birds. In Beijing, wetlands such as the Yanqing Wild Duck Lake and Miyun Reservoir host numerous migratory bird species, including the white-naped crane, common crane, mallard, and black stork. This year, World Migratory Bird Day, observed on Oct 11, called for collective efforts to create favorable living environments to secure the future of migratory birds in and around urban areas.

The threats posed by human activities and climate change to wetlands have heightened global awareness. According to the Global Wetland Outlook, launched in July, at least 400 million hectares of wetlands have been lost since 1970.

To promote and protect wetlands, Audi China and the Beijing Afforestation Foundation have jointly launched a public welfare initiative called "City Wetlands Guardian".

This initiative includes a series of volunteer activities, allowing participants to explore the ecological value of urban wetlands through hands-on experiences. In recent events, Audi employees and stakeholders observed wetland species, learned about water purification systems, and witnessed biological symbiosis.

Now in its third year, the Audi China Biodiverse City Initiative recently introduced the Beijing City Wetlands Guidebook, which provides comprehensive information on China's wetlands and showcases the stories and characteristics of 20 sites in Beijing.

Johannes Roscheck, president of Audi China, said: "Audi China is a pioneer in its active advocacy of biodiversity conservation. The Audi China Biodiverse City Initiative shows our enduring dedication to conserving biodiversity, fulfilling our commitments to China, and contributing to shaping a 'Beautiful China'."

Miriam Mayer-Ebert, executive vice-president of operation and transformation at Audi China, said: "We have organized numerous volunteer activities focusing on urban biodiversity since 2023, which have seen strong support from both employees and stakeholders. Their dedication continues to energize our collective efforts to protect urban ecosystems."