Author:
Nishimura Taku,Hamamoto Shoichiro,Yamasaki Takuhei,Tatsuno Takahiro
Abstract
AbstractWe collected undisturbed soil column samples (5 cm in diameter and 30 cm in length) using a liner soil sampler on and near the forest floor. The soil was sliced at predetermined intervals, and then the radioactive Cs concentration, soil organic carbon and nitrogen contents were analyzed. Below the litter layer on the forest floor, we observed more significant downward migration of radioactive Cs 2 years after the accident. In contrast, no such large migration happened at the downslope, which has no surface litter layer. Soil organic carbon content and radioactive Cs content are highly correlated, suggesting organic matters produced by decomposition of litter contributed to enhancing the downward migration of radioactive Cs.
Publisher
Springer Nature Singapore
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