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In September 2003, after the official implementation of the \level applications, a planning level as soon as possible to coordinate the relationship between the environment and development decision-making tools, and belongs to the context of the strategic environmental impact assessment. Planning environmental impact assessment is carried out to achieve the sustainable development of the central link. Carry out the work of planning environmental impact assessment needs to establish a more comprehensive index system, planning and environmental impact assessment index system is reflected in all aspects of planning and implementation of the regional ecology, natural resources and energy use, social and economic characteristics of various indicators constitute interrelated, interdependent group of statistical indicators, which constitutes decide the content of the evaluation of the environmental impact assessment in planning, linkages planning environmental impact assessment will be set to reflect the planning and implementation of the environmental impact of the scientific integrity of the index system of mutual restraint. Basin hydropower development at the same time bring huge economic benefits, but also a wide range of impact basin environment. Thus, to carry out the Valley Hydropower Planning, Environmental Impact Assessment, has obvious practical significance. Learn from at home and abroad about the planning environment impact assessment theory and index system research and practical experience, combined with the practical needs of the Valley Hydropower Planning EIA, various environmental impacts that may arise after the implementation of the analysis of the basin hydropower planning basis to construct the corresponding characteristics of the identification matrix of influencing factors, the basic theory of systems analysis to create a planning environment impact evaluation index system, including indicators, type, build the guiding ideology, principles and build mode, to Shule River mainstream Changma Reservoir in Gansu Province, more than river water planning environmental impact assessment, for example, the establishment of the framework of the basic indicators mode planning environmental impact assessment index system, and through access to literature and the analysis and calculation of the various quantitative indicators assignment, final environmental impact assessment indicators do not determine the planning of the Analytic Hierarchy Process. weight indicators, the screened core indicators, prioritizing system. Finally, the research summary and inadequate and suggestions. Planning environmental impact assessment study and application of the index system, can provide for the further development of the Valley Hydropower Planning, Environmental Impact Assessment and Strategic Environmental Impact Assessment work in the future theory support and Experience.
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