2011 Volume 40 Issue 1 Pages 43-46
To decontaminate the radioactive substance from the lawn, we measured the value of radiation dose of turfgrass and ground in a house yard at Fukushima city, Fukushima pref. The thatch especially showed high value of radiation dose, suggesting radioactive substance abundantly adsorbs to the thatch. On the other hand, soil under the thatch was at low dose level. By removing the thatch, surface contamination value drastically decreased to about 93%. After four weeks, the turf grew new shoots well and covered all area. At some contaminated playgrounds, turf grass was removed with surface soil for clean up, however, our method appeared useful for reducing radioactive substance and turf recovery.
