About NANJO MASAMI
About 東北大 大学院農学研究科
About 土壌の物理性
About major tsunami
About Miyagi prefecture
About farm land
About paddy field
About paddy soil
About soil erosion
About soil map
About soil salt
About gypsum
About Ion Exchange
About Sodium Chloride
About chemical property of soil
About cultivated soil
About earthquake disaster
About tsunami deposit
About Great East Japan Earthquake
About ソーダ質化
About 塩類化
About Soil science in general
About Natural damages(=natural hazards)
About 大津波
About 被災
About 宮城
About 沿岸部
About 農地
About 土壌