China's first subway line passing through a karst spring area began operation on Saturday in Jinan city of East China's Shandong province, marking an engineering breakthrough that balances urban ...

JINAN, Dec. 27 (Xinhua) -- China's first subway line passing through a karst spring area began operation on Saturday in Jinan City of east China's Shandong Province, marking an engineering ...

Citizens enter the Quancheng Park Station of Jinan Subway Line 4, in Jinan, East China's Shandong province, Dec 27, 2025. [Photo/Xinhua] JINAN -- China's first subway line passing through a karst ...

When carbonate rocks weather, karst landscapes are formed. The groundwater reserves in these layers of earth currently supply 10 to 20 percent of the world population with drinking water. So far, ...

In karst terrains, fractures and conduits often occur in clusters, forming groundwater quick flow belts, which are the major passages of groundwater and solute transport. We propose a cost-effective ...

China's first subway line passing through a karst spring area began operation on Saturday in Jinan, marking an engineering breakthrough that balances urban transit demands with the protection of ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...