Abstract:Based on GIS and RS technologies, this study selected the most important soil, water, biodiversity, and ecosystem services in the Min delta region as research objects. NPP (Net Primary Productivity) quantitative indicators were used to evaluate the benefits of four ecosystem services to determine the hierarchal importance and spatial distribution of these services. This paper also analyzes the underlying reasons driving the regional importance of ecosystem services. from the two aspects of land use and master factor identification. Taking the final integrated ecosystem services in the Fujian Triangle Region as an example, the results show that:(1) Extremely important and highly important regional areas account for 30.39% of the total study area. These areas are slightly distributed in Nanjing County, Pinghe County, and Changtai County, which occupy a relatively high area of 300-600 m above sea level and a gradient of 10-20°. (2) Slightly important and more important areas are largely distributed in the areas of Quanzhou and Xiamen in the northeastern coastal Fujian Province, with a relatively high area of 900-1800 m above sea level and a gradient of > 40°. (3) The area of forest land and grassland increased significantly from the slightly important areas to the most important ones, while urban and rural areas, industrial and mining areas, residential land, and cultivated land and water areas decreased. (4) The main controlling factors in the division of regional importance of integrated ecosystem services in the evaluation process are NPP, precipitation, soil seepage, and the integrated ecosystem services. The main control factors of regional division are NPP, elevation, and precipitation.