This photo taken on Aug 3, 2023 shows a scene of a turning of the Yellow River in the border area between Shilou County of north China's Shanxi province and Qingjian County of northwest China's Shaanxi province. (PHOTO / XINHUA)

China's ecological conservation red lines reached about 3.19 million square kilometers, covering all 35 key areas for biodiversity conservation and more than 90 percent of typical ecosystems, said a blue book released on Tuesday.

The Ministry of Natural Resources released the Blue Book of China's Ecological Conservation Red Lines, marking the country's first publication of such kind.

The marine ecological conservation red lines cover an area of about 150,000 square kilometers

READ MORE: Xi stresses culture, ecology on tour

Among them, the land ecological conservation red lines cover about 3.04 million square kilometers, accounting for over 30 percent of the country's land area.

The marine ecological conservation red lines cover an area of about 150,000 square kilometers.

READ MORE: Integrated network to ensure ecological red lines not crossed

By drawing the red lines, the country aims to prioritize the conservation of areas with significant functions, including water conservation, biodiversity maintenance, soil and water conservation, wind and sand fixation, and coastal protection.