Sahin S, Kurum E
Ankara University, Faculty of Agriculture, Department of Landscape Architecture, 06110 Ankara, Turkey.
J Environ Manage. 2002 Nov;66(3):239-47.
Environmental Impact Assessment (EIA) is a systematically constructed procedure whereby environmental impacts caused by proposed projects are examined. Geographical Information Systems (GIS) are crucially efficient tools for impact assessment and their use is likely to dramatically increase in the near future. GIS have been applied to a wide range of different impact assessment projects and dams among them have been taken as the case work in this article. EIA Regulation in force in Turkey requires the analysis of steering natural processes that can be adversely affected by the proposed project, particularly in the section of the analysis of the areas with higher landscape value. At this point, the true potential value of GIS lies in its ability to analyze spatial data with accuracy. This study is an attempt to analyze by GIS the areas with higher landscape value in the impact assessment of dam constructions in the case of Seyhan-Köprü Hydroelectric Dam project proposal. A method needs to be defined before the overlapping step by GIS to analyze the areas with higher landscape value. In the case of Seyhan-Köprü Hydroelectric Dam project proposal of the present work, considering the geological conditions and the steep slopes of the area and the type of the project, the most important natural process is erosion. Therefore, the areas of higher erosion risk were considered as the Areas with Higher Landscape Value from the conservation demands points of view.
环境影响评估（EIA）是一个系统构建的程序，通过该程序来审查拟议项目所造成的环境影响。地理信息系统（GIS）是进行影响评估的极其有效的工具，并且在不久的将来其使用可能会大幅增加。GIS已应用于广泛的不同影响评估项目，其中大坝已被作为本文的案例研究对象。土耳其现行的环境影响评估法规要求分析可能会受到拟议项目不利影响的自然过程，特别是在对具有较高景观价值区域的分析部分。在这一点上，GIS的真正潜在价值在于其准确分析空间数据的能力。本研究试图通过GIS分析在锡汉 - 科普鲁水电站项目提案的大坝建设影响评估中具有较高景观价值的区域。在通过GIS进行叠加步骤之前，需要定义一种方法来分析具有较高景观价值的区域。在本研究的锡汉 - 科普鲁水电站项目提案中，考虑到该地区的地质条件、陡坡以及项目类型，最重要的自然过程是侵蚀。因此，从保护需求的角度来看，侵蚀风险较高的区域被视为具有较高景观价值的区域。
