Human impacts toward river environment and restoration goal for river management. Ecol. Civil Eng. 2(1), 47-50, 1999

In this paper, 7 factors of river ecosystem are categorized from the view point of human impacts referring to Karr et al. (1986). The factors are 1) energy sauce; 2) water quality; 3) habitat quality; 4) flow regime; 5) sediment transport; 6) biotic interaction; and 7) human use. Based on the review of targets of conservation and restoration of river environment, I proposed that the target of river restoration is to restore the equilibrium dynamic system to keep the function of habitat quality.