Keywords: 
• 闽江流域,生态公益林,生态服务功能,遥感

Abstract: The values of the ecosystem service functions of Minjiang Watershed and the non-commercial ec-ological forests there are estimated with the method proposed by Contanza in combination with RS technol-ogy, based on the relevant information of waters, forest land, grassland, cultivated land and the other types of land of the counties within the watershed. Great changes in the value of the ecosystem service functions in Minjiang Watershed appear to have occurred from 1986 to 2003, which indicates the influence of human interruption on the ecosystem. Compared with the figures in 1986, the value has increased by 3.147×10~(18)yuan (RMB) in 2003 mainly due to the forest land. The value of the ecological forests has in-creased by 4.137×1018yuan (RMB), accounting for 37.093% of the total increase rate. The value of the ecological service functions of Minjiang Watershed is classified into 4 grades: lower grade, general grade,higher grade and highest grade. It is very important for the 15 counties whose rates of increase are below 10% to strengthen the protection to vegetation resources in developing their local economy. The increase of the value of the ecosystem functions of the ecological forests in Minjiang Watershed is becoming stable.This value in 1986 is 3.570×10~(18)yuan (RMB), while it is 4.737×10~(18)yuan (RMB) in 2003, which is 1.167×10~(18)more than the former and has an annual increased value of 6.867×10~(16)yuan (RMB). With the exception of Shaxian and Sanming all the other counties in the study area show a positive increase. The counties of Fuzhou and Changle have consistently maintained an increase rate greater than 100%, which is profited by the policies of protection and encouragement taken by the governments.