By Ben Blanchard and Chris Buckley
BEIJING, March 15 (Reuters) - China will evacuate citizens from areas worst affected by Japan's earthquake and subsequent damage to nuclear reactors, but has detected no abnormal radiation levels at home, the government said on Tuesday.
China's embassy in Japan said it was organizing the evacuation from parts of Japan worst affected by the quake and tsunami "owing to the seriousness of and uncertainty surrounding the accident at the Fukushima nuclear plant at present."
"We hope our compatriots in the main disaster zones remain calm and listen to instructions," it said in a statement on its website (www.china-embassy.or.jp).
Radiation levels fell at Japan's quake-stricken nuclear power plant on the northeast coast, the Japanese government said on Tuesday, after an earlier spike in radiation.
"Our ministry will continue closely monitoring developments in the accident at the Fukushima Number One Plant, will strengthen monitoring for radiation, and will swiftly report information about this," said the nuclear safety agency of China's Ministry of Environmental Protection.
As of 10 a.m. (0200GMT) on Tuesday, China's nuclear safety agency had detected no abnormal radiation, it said in the statement on its website (www.mep.gov.cn).
Winds were expected to carry any radiation from Japan out over the Pacific Ocean and away from China for at least the next three days, the China Meteorological Administration said in a separate statement on its website (www.cma.gov.cn).
Radiation levels in Russia's Far East rose slightly on Tuesday but stayed within normal levels, Russian officials said.
Japan's nearest neighbor South Korea said radiation levels remained within a normal range on the peninsula, but added it was taking precautionary measures such as equipping the country's main Incheon airport with monitors to check incoming passengers.
Like China, South Korea said the weather forecast indicated westerly and north-westerly winds would blow toward Japan over the next couple of days.
China has sent rescuers and aid after the earthquake and tsunami devastated Japan last week. Premier Wen Jiabao and President Hu Jintao have also expressed sympathy for the stricken country which has often had icy relations with Beijing.
"We are confident that they will be able to overcome these hardships, and China will provide more aid based on the needs of Japan," Jiang said.
China is Japan's biggest trade partner and a severe blow to the Japanese economy would also hurt China's exports.
Air China has canceled flights from Beijing and Shanghai to Tokyo on Tuesday afternoon and in the evening, as well as some on Wednesday, according to the company's website (www.airchina.com.cn).
A company spokeswoman said they were aware of the radiation issue, but that was not the reason for the cancellations. The airline did not want aircraft remaining in Japan overnight, she added.
China has already begun shipping relief materials to Japan, and a team of 30 Chinese medics is also on standby to go if needed, state news agency Xinhua said.
(Additional reporting by Sui-Lee Wee and Michael Martina in Beijing and Soo Ai Peng in Shanghai; Jack Kim in Seoul; Editing by Jonathan Thatcher)