[1] Boddiger, D. (2007) Boosting Biofuel Crops Could Threaten Food Security. Lancet, 370, 923-924.
http://dx.doi.org/10.1016/S0140-6736(07)61427-5
[2] Hattori, T. and Morita, S. (2010) Energy Crops for Sustainable Bioethanol Production; Which, Where and How? Plant Production Science, 13, 221-234.
http://dx.doi.org/10.1626/pps.13.221
[3] Gelfand, I., Sahajpal, R., Zhang, X., Izaurralde, R.C., Gross, K.L. and Robertson, G.P. (2013) Sustainable Bioenergy Production from Marginal Lands in the US Midwest. Nature, 493, 514-517.
http://dx.doi.org/10.1038/nature11811
[4] Field, C.B., Campbell, J.E. and Lobell, D.B. (2008) Biomass Energy: The Scale of the Potential Resource. Trends in Ecology & Evolution, 23, 65-72.
http://dx.doi.org/10.1016/j.tree.2007.12.001
[5] Campbell, J.E., Lobell, D.B., Genova, R.C. and Field, C.B. (2008) The Global Potential of Bioenergy on Abandoned Agriculture Lands. Environmental Science & Technology, 42, 5791-5794.
http://dx.doi.org/10.1021/es800052w
[6] Cai, X., Zhang, X. and Wang, D. (2011) Land Availability for Biofuel Production. Environmental Science & Technology, 45, 334-339.
http://dx.doi.org/10.1021/es103338e
[7] Nijsen, M., Smeets, E., Stehfest, E. and Van Vuuren, D.P. (2012) An Evaluation of the Global Potential of Bioenergy Production on Degraded Lands. GCB Bioenergy, 4, 130-147.
http://dx.doi.org/10.1111/j.1757-1707.2011.01121.x
[8] Tilman, D., Hill, J. and Lehman, C. (2006) Carbon-Negative Biofuels from Low-Input High-Diversity Grassland Biomass. Science, 31, 1598-1600.
http://dx.doi.org/10.1126/science.1133306
[9] Varvel, G.E., Vogel, K.P., Mitchell, R.B., Follett, R.F. and Kimble, J.M. (2008) Comparison of Corn and Switchgrass on Marginal Soils for Bioenergy. Biomass and Bioenergy, 32, 18-21.
http://dx.doi.org/10.1016/j.biombioe.2007.07.003
[10] Schmer, M.R., Vogel, K.P., Mitchell, R.B. and Perrin, R.K. (2008) Net Energy of Cellulosic Ethanol from Switchgrass. Proceedings of National Academy of Sciences of the United States of America, 105, 464-469.
http://dx.doi.org/10.1073/pnas.0704767105
[11] Fargione, J., Hill, J., Tilman, D., Polasky, S. and Hawthorne, P. (2008) Land Clearing and the Biofuel Carbon Debt. Science, 319, 1235-1238.
http://dx.doi.org/10.1126/science.1152747
[12] Smith, S.L., Thelen, K.D. and MacDonald, S.J. (2013) Yield and Quality Analyses of Bioenergy Crops Grown on a Regulatory Brownfield. Biomass and Bioenergy, 49, 123-130.
http://dx.doi.org/10.1016/j.biombioe.2012.12.017
[13] Matsumoto, N., Sano, D. and Elder, M. (2009) Biofuel Initiatives in Japan: Strategies, Policies, and Future Potential. Applied Energy, 86, S69-S76.
http://dx.doi.org/10.1016/j.apenergy.2009.04.040
[14] Koizumi, T. (2013) Biofuel and Food Security in China and Japan. Renewable and Sustainable Energy Reviews, 21, 102-109.
http://dx.doi.org/10.1016/j.rser.2012.12.047
[15] NEDO (New Energy and Industrial Technology Development Organization) (2013)
http://www.nedo.go.jp/activities/FF_00042.html
[16] Koizumi, T. (2011) The Japanese Biofuel Program—Developments and Perspectives. Journal of Cleaner Production, 40, 57-61.
http://dx.doi.org/10.1016/j.jclepro.2011.04.022
[17] Sekiya, N., Hattori, T., Shiotsu, F., Abe, J. and Morita, S. (2014) Identifying Potential Field Sites for Production of Cellulosic Energy Plants in Asia. International Journal of Agricultural and Biological Engineering, accepted.
[18] McMahon, G., Subdibjo, E.R., Aden, J., Bouzaher, A., Dore, G. and Kunanayagam, R. (2000) Mining and the Environment in Indonesia: Long-Term Trends and Repercussions of the Asian Economic Crisis. East Asia Environment and Social Development Unit, The World Bank, Washington DC.
http://commdev.org/userfiles/files/877_file_mining_and_the_environment.pdf
[19] Aspinall, C. (2001) Small-Scale Mining in Indonesia. International Institute for Environment and Development, London.
http://pubs.iied.org/pdfs/G00725.pdf
[20] Prasetyo, B., Krisnayanti, B.D., Utomo, W.H. and Anderson, C.W.N. (2010) Rehabilitation of Artisanal Mining Gold Land in West Lombok, Indonesia: 2. Arbuscular mycorrhiza Status of Tailings and Surrounding Soils. Journal of Agricultural Science, 2, 202-209.
http://www.ccsenet.org/journal/index.php/jas/article/download/4742/4983
[21] Hattori, T., Shiotsu, F., Doi, T. and Morita, S. (2010) Suppression of Tillering in Erianthus ravennae (L.) Beauv. Due to Drought Stress at Establishment. Plant Production Science, 13, 252-255.
http://dx.doi.org/10.1626/pps.13.252
[22] Ra, K., Shiotsu, F., Abe, J. and Morita, S. (2012) Biomass Yield and Nitrogen Use Efficiency of Cellulosic Energy Crops for Ethanol Production. Biomass and Bioenergy, 37, 330-334.
http://dx.doi.org/10.1016/j.biombioe.2011.12.047
[23] Fauzi, A.I., Agus, F. and Sukarman, N.K. (2011) Characterizing the Soil for Improved Nutrient Management in Selected Maize Growing Areas of Indonesia. Indonesian Journal of Agricultural Sciences, 12, 17-32.
http://pustaka.litbang.deptan.go.id/publikasi/as121113.pdf
[24] Morgan, R.P.C. (2009) Soil Erosion and Conservation. John Wiley & Sons, Hoboken.
[25] Cruse, R.M., Cruse, M.J. and Reicosky, D.C. (2010) Soil Quality Impacts of Residue Removal for Biofuel Feedstock. In: Lal, R. and Stewart, B.A., Eds., Soil Quality and Biofuel Production, CRC Press, Boca Raton, 45-62.
[26] Galdos, M.V., Cerri, C.C., Bernoux, M. and Cerri, C.E.P. (2010) Ethanol Production from Sugarcane and Soil Quality. In: Lal, R. and Stewart, B.A., Eds., Soil Quality and Biofuel Production, CRC Press, Boca Raton, 137-150.
[27] Lemus, R. and Lal, R. (2005) Bioenergy Crops and Carbon Sequestration. Critical Reviews in Plant Sciences, 24, 1-21.
http://dx.doi.org/10.1080/07352680590910393
[28] Ma, Z., Wood, C.W. and Bransby, D.I. (2000) Soil Management Impacts on Soil Carbon Sequestration by Switchgrass. Biomass and Bioenergy, 18, 469-477.
http://dx.doi.org/10.1016/S0961-9534(00)00013-1
[29] Ma, Z., Wood, C.W. and Bransby, D.I. (2000) Impacts of Soil Management on Root Characteristics of Switchgrass. Biomass and Bioenergy, 18, 105-112.
http://dx.doi.org/10.1016/S0961-9534(99)00076-8
[30] Sekiya, N., Shiotsu, F., Abe, J. and Morita, S. (2013) Distribution and Quantity of Root Systems of Field-Grown Erianthus and Napier Grass. American Journal of Plant Sciences, 4, 16-22.
http://dx.doi.org/10.4236/ajps.2013.412A1003
[31] Reubens, B., Poesen, J., Danjon, F, Geudens, G. and Muys, B. (2007) The Role of Fine and Coarse Roots in Shallow Slope Stability and Soil Erosion Control with a Focus on Root System Architecture: A Review. Trees, 21, 385-402.
http://dx.doi.org/10.1007/s00468-007-0132-4