摘要：Based on the special environmental characters of Neijiang, a typcial tide-influenced waterfront body located in the middle-down reaches of the Yangtze River in China, the field differentiation function for submersed macrophyte restoration was proposed, which considered the intergrated impacts of various environmental factors such as underwater light, nutrients, suspended sediment, water current, deposited sediment, and temperature. In view of the multi-dimensional problem the field submersed macrophyte restoration differentiation model based on projection pursuit was established, which included three parts, the block of multi-factor coupled numerical simulation, data processing block, and the output module.Vallisneria gigantean L. was selected as the pioneer species, and the restoration areas in Neijiang in different typical years were forecasted based on the established model. The results showed that the restoration regions in different typical years varied to some extent due to the disparities in water and sediment. In different level years the main restoration areas were all concentrated in the north and south parts in Neijiang, and it was difficult to restore the macrophytes in the mainstream area due to its relatively stronger water disturbance and higher suspended sediment concentration.
关键词：submersed macrophyte;restoration;Projection pursuit;Neijiang;Vallisneria gigantean L
