[Objective] The study aimed to assess the impact of farmland improvement on ecological environment along coastal areas of Jiangsu Province. [Method] Taking the coastal farmland improvement of Sheyang County, Jiangsu Province as an example, an indicator system of environmental impact assessment (EIA) for coastal farmland improvement was established based on data collection, field survey and monitoring results, expert consultation, literature study and other methods, including four subsystems (biological resource, soil, vegetation and water environment) and 12 indicators. [Result] The weights of soil, biological resource, vegetation and water environment were 0.614, 0.219, 0.118 and 0.049, and the top weight of soil showed that farmland improvement had a great influence on soil. Among the 12 indicators, the most important indicators with higher weights were reclamation rate of the land (weight 0.389), population density (weight 0.164) and the content of soil organic matter (weight 0.088). Therefore, in EIA of such kind of projects in the future, we should give prominence to the identification, evaluation and monitoring of the main characteristic factor above. [Conclusion] The research could provide scientific references for the sustainable utilization of resources and establishment of environmental management policies along costal areas of Jiangsu Province.
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