2003 - 2008 Environmetal Remediation in salt affected/saline sodic soil
2002 - 2007 海外の不良土壌(塩類集積土壌、アルカリ塩類土壌)の環境修復
2000 - 2002 物質循環を基盤とした浄化システムによる湖沼・河川の環境浄化手法の開発
塩類集積土壌のモニタリング・評価と植物を用いた修復
Nitrogen flow at farming areas on sand dunes
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論文 (19件):
Nanae Hosokawa, Yuka Ozawa, Atsushi Hayakawa, Yuichi Ishikawa, Tadashi Takahashi. Effect of active aluminum on soil phosphorus forms in a forested watershed in Akita, Japan. Geoderma. 2022. 416
Satoshi Wakamiya, Atsushi Hayakawa, Tadashi Takahashi, Yuichi Ishikawa, Yasuji Kurimoto, Hideo Sugimoto, Yuji Aoki, Sumio Kato, Masataka Ogasawara, Nobuhiro Kanazawa, et al. Physicochemical properties of biochar derived from wood of Gliricidia sepium based on the pyrolysis temperature and its applications. Journal of Soil and Water Conservation. 2022. 77. 3. 322-330
Atsushi Hayakawa, Hitoshi Ota, Ryoki Asano, Hirotatsu Murano, Yuichi Ishikawa, Tadashi Takahashi. Sulfur-Based Denitrification in Streambank Subsoils in a Headwater Catchment Underlain by Marine Sedimentary Rocks in Akita, Japan. Frontiers in Environmental Science. 2021. 9
Atsushi Hayakawa, Yasunari Shiraiwa, Naoki Murakami, Yuki Murayama, Tomoko Ishida, Yuichi Ishikawa, Tadashi Takahashi. Influence of surface geology on phosphorus export in coastal forested headwater catchments in Akita, Japan. Soil Science and Plant Nutrition. 2021. 67. 3. 332-346
Atsushi Hayakawa, Yu Funaki, Tatsuya Sudo, Ryoki Asano, Hirotatsu Murano, Shintaro Watanabe, Tomoko Ishida, Yuichi Ishikawa, Shin Hidaka. Catchment topography and the distribution of electron donors for denitrification control the nitrate concentration in headwater streams of the Lake Hachiro watershed. Soil Science and Plant Nutrition. 2020. 66. 6. 906-918