Abstract: Based on the three phase of remote sensing images of Zhoushan Island in 1995, 2005 and 2015, through the interpretation of human-computer interaction, the image of the land resources and urban land use data were obtained. And then using the ecology analysis method, spatial statistics analysis method, urban expansion index method, the Zhoushan Island reclamation activities and urban land expansion characteristics were explored, and meanwhile the association between them was also analyzed. Finally, the following conclusions were acquired: (1) The total reclamation area in Zhoushan Island was expanded from 1995 to 2015. (2) In the first ten years, land use at the beach resources was mostly in land near the beach, while it gradually went to the shallow sea in the late ten years. (3) In the years from 1995 to 2005, the growth intensity was 0.53 and the growth speed was 3.01 km²/a. In the years from 2005 to 2015, the growth intensity was 1.46 and the growth speed was 8.11 km²/a. (4) The city development center of Zhoushan Island had experienced a move from west to east and then had a northward jump process during the past 20 years. Coordinated development had been made among the various regions so that the economic integrity of Zhoushan Island and the rationality of urban functions had been upgraded. (5) The cultivation of land by tideland reclamation and urban land expansion were positively related, the research data showed that natural succession took about 8-10 years, artificial intervention could significantly shorten the process.

Key words: beach reclamation, remote sensing image, island city, spatial and temporal expansion, Zhoushan Island