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Eco-balance analysis of land use combinations to minimize environmental impacts and maximize farm income in northern Japan

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タイトル: Eco-balance analysis of land use combinations to minimize environmental impacts and maximize farm income in northern Japan
著者: Kimura, Sonoko D. 著作を一覧する
Toma, Yo 著作を一覧する
Mu, Zhijian 著作を一覧する
Yamada, Hiroyuki 著作を一覧する
Hatano, Ryusuke 著作を一覧する
キーワード: Eco-balance
Farmland soil
Farmland surplus nitrogen
Global warming potential
Land use
発行日: 2010年 1月
出版者: Springer Japan
誌名: Sustainability Science
巻: 5
号: 1
開始ページ: 19
終了ページ: 27
出版社 DOI: 10.1007/s11625-009-0100-6
抄録: Relationships between global warming potential (GWP), farmland surplus nitrogen (FSN) and income for major land uses in Ikushunbetsu watershed were compared using the eco-balance method. An empirical model was created for carbon dioxide, methane and nitrous oxide for both uplands and paddy rice using monitoring data from 22 fields. The greenhouse gas emissions were converted into GWP, whereas yield and FSN were obtained from farmers' interviews and literature survey. Land use distribution was obtained by ground surveys in 2002, 2005 and 2007. The analysis showed that paddy rice and soybean were characterized by a high GWP, low FSN and high income, whereas onions and vegetables had a high FSN but low GWP and moderate income. Wheat showed a negative GWP in some years and abandoned areas always exhibit negative values. The total GWP for the region was 14184, 11085 and 8337 Mg CO2 yr^[-1] for 2002, 2005 and 2007, respectively. The contribution of paddy rice to GWP was highest, ranging from 40% to 75%. To find optimal land use combinations that have higher income and lower GWP and FSN than present, all possible land use combination was analyzed by changing the land use proportion from 0 - 100% at an interval of 10%. The number of land use combinations meeting the requirements in the three investigated years was 205. Abandoned area which had the smallest environmental load was included in every land use combination, indicating that land uses with low environmental impacts should be maintained at a certain proportion to mitigate the environmental load accompanying land uses with high production.
Rights: The original publication is available at www.springerlink.com
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/43230
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 波多野 隆介

 

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