@article{oai:mie-u.repo.nii.ac.jp:00006437, author = {Kitamura, Hiroshi and Yano, Takeo and Mishima, Takashi and Karita, Shuichi and Nishimura, Norihiro}, issue = {2}, journal = {Proceedings of the Second International Workshop on Regional Innovation Studies : (IWRIS2010)}, month = {Oct}, note = {application/pdf, As for the problem of the environmental load of the carbon dioxide, it is argued all over the world. But reactive nitrogen load has the same problem to the environment that we cannot ignore. The consumption of the reactive nitrogen increases in form of the fertilizer, by the expansion of the cultivation area and with the increase in population adds more problems for us to face. As for the surplus reactive nitrogen, possibility to have various influences on environment is pointed out. The reactive nitrogen may decrease biodiversity by eutrophication of the soil, river water, and seawater. The atmospheric reactive nitrogen causes the acid rain which flows into the ocean and produces dead zone. By the way, Sea-plant grows without fertilizer and it takes underwater reactive nitrogen. We may conclude that Seaplant is thought of as “Nitrogen-neutral” Therefore we are proposing the theory called the recycling society, environment load can reduce by the use of the Seaplant in various forms that cultivation seems to be possible even if we do not use new reactive nitrogen.}, pages = {39--42}, title = {“Nitrogen- neutral” Relate to Using Sea-plant}, year = {2011} }