Abstract: Using related methods of evaluating ecosystem service value (ESV), the ESV ofisland ecosystems in Putuo District, Zhoushan Archipelago was evaluated. The changes of ESV caused by land use change and the potential impacts of planned land use structure on ESV were analyzed. The results showed that the land use change was obvious in Putuo District from 2006 to 2012, with a substantial increase of construction land and a significant decrease of cropland and wasteland. The ESV increased by 32.0 million yuan from 2006 to 2012 due to the conversion of largearea cropland into waters, the ESV of which being higher. According to the land useplanning for the period of 2006 to 2020, the ESV in 2020 would decrease by 99.1 million yuan because land use types such as forest, water and tidal marsh with high ESV would be changed into those with relatively low ESV, such as construction land. Moreover, the construction land would be in excessive growth, while the cropland area could not meet the planning requirement. Therefore, the land use planning in 2006-2020 would be unable to meet the development ofPutuo District. Further adjustment should take the ESV into account to balance land userequirement and ecological protection of regional development.

Key words: oxygen minimum zone (OMZ), nitrogen loss, denitrification, anammox