Coastal islands are located in a transitional environment where land and ocean interact. During the past 20 years, large
areas of the natural landscape of Zhoushan islands have been replaced by human features. There is limited research
detailing the amount of impervious surface growth in the Zhoushan islands and trends in the land environment using
remotely sensed technologies. The purpose of this paper is to assess the influences of anthropogenic activities on land
ecological environment in Zhoushan islands based on remotely sensed impervious surfaces. First the impervious surfaces
information of 1986, 1995 and 2006 were estimated using Landsat Thematic Mapper (TM) images, and then an
integrated state indicator was built. The results reveal that imperious surfaces areas (ISA) of Zhoushan islands
remarkably increased from 19.2 km2 (2.73%) in 1986 to 29.5 km2 (4.20%) in 1995, and to 58.2 km2 (8.27%) in 2006.
The average state value for the total area was 0.70, 0.65, and 0.55 respectively for 1986, 1995, and 2006. Of the
surrounding islands, the Lujiazhi, Xiaogan, Panzhi, and Cezi suffered the most land disturbance intensity from human
activities, followed by the Jintang, Xiushan, and Damao, and the Changbai and Changzhi had the lowest disturbance
values. It indicates that the land ecological environment of Zhoushan islands was variously disturbed by growing human
activities over time. Further, we found that the topography, island size, spatial location from Zhoushan Island and
economic policy had an influence on change of impervious surfaces for each island.