About ARAI YUJI
About 立正大 地球環境科学
About YONEBAYASHI CHU
About 立正大 地球環境科学
About 立正大学地球環境研究
About paddy soil
About Alnus japonica
About biodiversity
About plant death
About paddy soil
About Environmental problems
About Forest botany
About 水田
About 侵入
About ハンノキ
About 生残
About 枯らし