NUMERICAL SIMULATION OF LAKE ECOSYSTEM REATORATION METHODS
Recently, the preservation of lake water ecosystem become more important as well as lake water quality management. Especially, when we try to keep the good lake water quality for a long-term, it is important how to keep the ecosystem condition more desirable one. Originally, the lake ecosystem has a certain level of resistance for excess nutrient loading. However, it is thought that the longstanding human industrial activity and resultant superabundant nutrient loading has been damaged the balance of the ecosystem. As a result, the ecosystem strongly biased to the primary production (i.e. phytoplankton) was created. This tendency seems to be much more remarkable in shallow lakes. To restore this damaged water ecosystem, some ecological restoration methods were designed and practiced. Biomanipulation is one of the representative examples. Of course, the lake ecosystem is very complicated and varied individually. Thus, the simulation study prior to implement these ecological restoration methods is strongly required.In this presentation, the brief review of biomanipulation practices around the world was given at the beginning. The review of lake numerical simulation model is also described from the viewpoint of prediction of ecological restoration methods like biomanipulation. Then, our approach for the development of a numerical model which was designed to predict the long-term changing in the lake water ecosystem is explained. Finally, its application for the Lake Balaton (Hungary) is introduced as an example of Numerical simulation of lake ecosystem restoration methods.
Masaki SAGEHASHI Akiyoshi SAKODA Motoyuki SUZUKI
Division of University Corporate Relations, The University of Tokyo Institute of Industrial Science, The University of Tokyo United Nations University University of the Air
国际会议
第六届中日水环境暨NSFC-JST重大国际合作项目成果交流会
青岛
英文
65-66
2006-10-19（万方平台首次上网日期，不代表论文的发表时间）