Most streams in Korea have been managed mainly for the control of flood or usages of the water for agriculture, industry, and others, resulting in the loss of their natural characteristics. In recent years, ecological system and function of streams are recognized as very important, and a paradigm change in their management is prevailing.This study, first, analyzed recent stream restoration policies and projects and derived major restoration planning factors; second, evaluated relative importance and priority of the factors using AHP (Analytic Hierarchy Process) method.The derived planning factors were four factors for the level 1, and sixteen factors for the level 2.Relative importance and priority of each factor were calculated, and finally, a composite relative importance and priority of all the factors were suggested. These findings are hoped to support stream restoration policies and be used in drafting restoration guidelines.

The Korean government has purchased land properties alongside any significant water bodies before setting up the buffers to secure water qualities. Since the annual budgets are limited, however, there has always been the issue of which land parcels ought to be given the priority. Therefore, this study aims to develop efficient mechanism for land acquisition priorities in stream corridors that would ultimately be vegetated for riparian buffer zones.The criteria of land acquisition priority were driven through literary review along with experts' advice. The relative weights of their value and priorities for each criterion were computed using the Analytical Hierarchy Process(AHP) method.Major findings of the study are as follows:1. The decision-making structural model for land acquisition priority focuses mainly on the reduction