延边朝鲜族自治州生态系统服务变化研究

Study on the changes of urban ecosystem services in Yanbian Korean Autonomous Prefecture

基于延边州2007、2016年土地利用/土地覆被数据,结合土地利用类型动态度、生态系统服务价值和敏感性指数,对研究区生态系统服务价值变化及其特征进行分析。结果表明:1)延边州土地利用类型主要以林地为主;2007和2016年,草地、旱地和水田面积减少,建设用地、水域和林地面积增加。2)研究区生态系统服务价值呈现缓慢增长趋势,增值为8.49×10^8元,增长率0.85%;在单项生态系统服务价值中,水文调节增加迅速;除食物生产、维持养分循环数值减少之外,其他生态系统功能也呈现增长趋势。3)延边州生态系统服务价值缺乏弹性,所采用的生态价值系数可靠。研究以生态系统服务价值变化规律为依据,为延边州的未来土地规划、生态环境建设和可持续发展提供科学的决策和依据。

Based on the land use/land cover data of Yanbian Prefecture in 2007 and 2016, combined with land use type dynamics, ecosystem service value and sensitivity index, the changes and characteristics of ecosystem service value in the study area were analyzed. The results showed that:(Ⅰ)The land use types of Yanbian Korean are mainly forest land;the area of grassland, dry land and paddy fields is reduced, and the area of construction land, water area and forest land is increased in 2007-2016.(Ⅱ)The value of ecosystem services in the study area showed a slow growth trend, with a value added of 4.79×10^8 yuan and a growth rate of 0.85%. In the value of individual ecosystem services, hydrological regulation increased rapidly;except for food production and maintenance of nutrient cycling values, other ecosystem functions also showed an increasing trend.(Ⅲ)The value of ecosystem services in Yanbian Prefecture is not flexible, and the ecological value coefficient adopted is reliable. Based on the changes in the value of ecosystem services, the study provides scientific decision-making and basis for the future land planning, ecological environment construction and sustainable development of the Yanbian Prefecture.