About one-tenth of the roughly 5,000 proposals submitted to the country's top political advisory body since the two sessions began on March 3 are related to environmental protection, a top national political adviser has said.

Luo Fuhe, executive vice-chairman of the China Association for Promoting Democracy Central Committee, revealed the figure at a meeting on pollution control that included CPPCC members and top officials from eight ministries.

A working plan relating to groundwater pollution prevention and control in the North China Plain was released on Friday and is aimed at setting out a rough picture of the current pollution situation before 2015.