| Land use planning with a coordinating role in the development of social and economic environment, is an very important method to optimize and dispose land resources. However, its implementation process inevitably has some impact on the environment by adjusting the land use structure and arrangement and reclamation development activities. Comparing to the short-term and reversibility environmental impact of the project, the characteristics of land use planning environmental impact is long-term, irreversible and cumulative. Therefore, carrying out environmental impact assessment of land use planning, analyzing, forecasting and assessing the possible environmental impacts after the implementation of land use planning and proposing the policies and measures to prevent or mitigate adverse environmental impacts is of great significance. Currently, the new round of land use planning revision is launched in China. As a SEA, environmental impact assessment of the land use planning has formally established since the implementation of the "Environmental Impact law of Republic of China" in September1,2003, and is still at the exploratory stage, there has not yet formed a mature, widely accepted evaluation method and index system in China, the research of environmental impact assessment index system of land use planning is necessary.This paper reviewed the domestic and abroad study progress on the environmental impact assessment in land use planning, systematically described the sustainable development theory, systematic theory, landscape ecology theory and the theory of coordination degree, analyzed the methods of environmental impact identification and its advantages and disadvantages, made a detail environmental impact identification from the land use structure, layout and land remediation. In the end, to solve the message overlap problem of land use planning assessment indictors, the planning project of Dangtu County was taking as a study case and the method of correlation analysis was adopted using SPSS to discuss the indictor system establishment, and the land use planning assessment was taken by using combined index and harmony degree. The results showed that: (1) The way most researchers obeyed "environmental impact identification-determine the principles of index system-establish the indicators" would result in information overlap between indicators, and the indicators selection based on correlation analysis can avoid the omission of important indicators and the information overlap between indicators. Thus the indicators are more independent and the assessment results are more reliable.(2)The land using combined index of Dangtu County in2005is0.7341, the environmental, resources, ecological and social index of which are0.2596,0.0993,0.1657and0.2095separately. After the implementation of land-use planning in2020, the environmental (0.3046), resources (0.1072), ecological (0.2560) and social index (0.3272) will increase. But the harmony degree of year2020is0.6022, less than that of year2008(0.6296), which needs close attention. |
