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According to the survey of Ministry of Education, Culture, Sports, Science and Technology, in Kawamata machi, Fukushima, where is in the planned evacuation area, leaves of Japanese cedar contain 177,600 Bq/Kg of radioactive cesium. In Okutama, just west to Tokyo, pollen of Japanese cedar contains 93.8 Bq/Kg,leaves contain 322 Bq/Kg, soil contains 1,381 Bq/Kg. From their calculation, next year, pollen of over 50,000 Bq/Kg will fly around. Pollen of Japanese cedar fly for tens of Km, over 300km when it’s on the wind.

Tokyo is only 220km away from Fukushima. It is highly likely that Tokyo gets hit by the highly contaminated pollen.

SOURCE: News: Actual Fukushima worker warns to get out of Japan before Spring comes, Fukushima Diary by Mochizuki, October 5, 2011 [Translated Oct. 4 Tweet by] Happy20790 ハッピー

[...] Speaking of the pine, the pollen next year is very “serious”. I have an allergy too.

[Translated Oct. 4 Tweet by] Happy20790 ハッピー

As an actual Fukushima worker warned one month ago,they are finally recognizing pollen may be the biggest menace for internal exposure. Pollen directly gets into your lungs,nostrils,and all around in your body. It causes severe internal exposure. Japanese Forestry Agency has finally started evaluating the risk but it seems too late. Annually,pollen starts flying from December. Because this is the first thing that’s ever happened to human-beings,there is no solid study. However,according to the research conducted in last June by Ministry of Education, Culture, Sports, Science and Technology,Japanese cedar leaves contained 177,600 Bq/Kg at that time.

Considering that there has been more fallout since last June,the radiation level may be even higher. 1850km2　(The entire area of Tokyo is 2187km2) area of Fukushima is covered with Japanese cedars. The pollen flies further than hundreds of km ,(Tokyo is about 220km away from Fukushima plant) ,Tokyo is obviously in the firing range. Contamination in the mountain / forrest area is also serious because they can never decontaminate it. When you sneeze,it may be already too late.

Dr. Bin Mori is a professor emeritus at University of Tokyo, Faculty of Agriculture. Since the beginning of the Fukushima nuclear crisis on March 11, the professor has been writing his blog focusing on the effect of radiation in plants and remediation of agricultural land.I have featured his autoradiographs of dandelion and horsetail on my blog before.In his post on October 30, Professor Mori wrote about his discovery, probably the world first, he made in spiders (Nephila clavata) he caught in Iitate-mura, Fukushima Prefecture, where the villagers were forced to evacuate after being designated as "planned evacuation zone". The spiders, he found, had radioactive silver (Ag-110m) at 1,000 times the concentration in the environment.The following is my translation of Dr. Mori's October 30 blog post, with his express permission:

Since it was difficult to collect plants in the rain in Iitate-mura, I caught instead "nephila clavatas" in the bamboo groves and cedar forest.

I don't know whether the spiders eat dirt itself, but I thought they may have concentrated radioactive cesium in their bodies as they were at the top of the food chain in the forest, eating butterflies, horseflies, and drone beetles that they caught in their webs.

Japan on Sunday said cesium that is generating significant radioactivity at a location in China prefecture had likely been released from the damaged Fukushima atomic facility, the Japan Times reported (see GSN, Oct. 21). The six-reactor power plant was damaged by the March 11 earthquake and tsunami that left more than 20,000 people missing or dead in Japan. Radiation releases on a level not seen since the 1986 Chernobyl disaster forced the evacuation of about 80,000 residents from a 12-mile ring exclusion zone surrounding the site in Fukushima prefecture. A Sunday inspection by Japanese Science Ministry and Kashiwa city authorities located an area to which rainwater had likely been carrying contaminants from the plant. The city had previously played down the likelihood that the radioactive material had originated from the nuclear facility (Japan Times, Oct. 24). Fukushima prefecture on Thursday said two boys between 4 and 7 years old had received the highest levels of internal radiation contamination out of roughly 4,500 locals tested, Kyodo News reported. The contamination would amount to roughly three millisieverts of radiation over their lives and would not produce dangerous effects, officials said (Kyodo News/Mainichi Daily News, Oct. 21). The Japanese Forestry Agency indicated that as soon as November it would begin to test pollen from cedar flowers located in the evacuation zone for cesium contamination, the Yomiuri Shimbun reported on Monday (Yomiuri Shimbun, Oct. 24). The government's Science Ministry and Fisheries Agency are set to ramp up and broaden testing for radioactive materials in ocean water and marine produce, the Asahi Shimbun reported on Saturday (Asahi Shimbun, Oct. 22).