Airlines are also revising schedules and increasing flight frequency to meet evacuation needs, Jiang added.

Meanwhile, nuclear regulators across the world were closely monitoring the situation of the severely damaged Fukushima No. 1 Nuclear Power Plant in northeastern Japan, prompting many to inspect their own nuclear facilities amid mounting concerns over nuclear safety.

"All governments and peoples have reason to pay close attention to the nuclear crisis and we hope Japan can provide timely and precise information on the situation," Jiang said.

She said nuclear safety is the primary guarantee in developing nuclear technology and that the Chinese government attaches great importance to nuclear safety.

China has suspended the approval process for nuclear power stations so that safety standards can be revised, according to Wednesday's executive meeting of the State Council, or the Cabinet.

The State Council has required relevant departments to do safety checks at existing plants, according to a statement released after the meeting presided over by Premier Wen Jiabao.

"Safety is our top priority in developing nuclear power plants," the State Council said in the statement, calling for a comprehensive safety check and enhanced management over existing plants.

China has six nuclear power plants in operation, which are located along the country's eastern and southern coasts.

The State Council also required the country's environmental regulator, the National Nuclear Safety Administration, to step up monitoring of radioactive substances and issue alerts timely, said the statement.

Jiang also said China expects timely and accurate information regarding the nuclear leakage from Japanese authorities, as well as details on measures it will take to clean up after the disaster.

Both China and Japan are members of the International Atomic Energy Agency (IAEA). Japan is responsible for reporting relevant information to the IAEA, thus ensuring that all other members are kept informed on the nuclear leakage, she said.

She added that the IAEA would contact China Atomic Energy Authority to keep China abreast of the nuclear leakage situation in Japan.