Distribution and mean residence time of natural radionuclides in the forest ecosystem |
| |
| Authors: | S Sugihara S Osaki T Baba Y Tagawa Y Maeda Y Inokura |
| |
| Institution: | (1) Radioisotope Center, Kyushu University, Hakozaki, Higashi-ku, 812-8581 Fukuoko, Japan;(2) Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, 812-8581 Fukuoka, Japan;(3) Research Division of University Forests, Faculty of Agriculture, Kyushu University, 811-2415 Sasaguri, Japan |
| |
| Abstract: | Activity concentrations of radionuclides,7Be,210Pb and210Po, in precipitation (rain, throughfall and stemflow), wood and soil were determined by using gamma-ray and alpha-ray spectrometry
to estimate the migration behavior of these radionuclides in the forest canopy. The activity ratios between output and input
precipitations for the forest canopy were 0.53 of7Be, 0.79 of210Pb and 1.5 of210Po for Pasania edulis forest. A dynamic model of the transport and fate of radionuclides in the forest ecosystem was constructed.
Mean residence times of radionuclides were 56 days for7Be, 765 days for210Pb and 653 days for210Po for Pasania edulis forest. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
