青岛市土地利用与生态系统服务价值的演变

Evolution of land use and of ecosystem service value in Qingdao City

生态系统服务是城市生存发展需求的提供者,而城市土地利用状况又直接决定着生态系统的服务水平.利用GIS对2006年和2016年的青岛卫星遥感影像进行处理和比较,揭示了10年间青岛市的土地利用时空变化格局及其对生态系统服务的影响.研究结果表明:2006—2016年,青岛市林地和耕地的面积呈下降趋势,水域和建设用地的面积呈上升趋势,青岛生态用地占土地利用总面积的比例由86.6%下降到82.4%,生态用地所提供的生态系统服务的经济价值降低了7.9%;青岛市土地利用时空变化与生态系统服务变化密切相关,其中林地这类生态用地对生态系统服务的贡献最大.

Ecosystem services are the providers of urban needs of survival and development,and the situation of urban land use directly determines the level of ecosystem services.The satellite remote sensing images of Qingdao in 2006 and 2016 were processed and compared by using GIS.The spatial-temporal changes in land use and their impact on ecosystem services in Qingdao in the past decade were revealed.The results show that from 2006 to 2016,the area of forest and farmland is on the decline,the area of water and construction land is on the rise,the proportion of ecological land in the total land use area of Qingdao has decreased from 86.6%to 82.4%,and the economic value of ecosystem services provided by ecological land has decreased by 7.9%.The results show that the spatial and temporal changes in land use in Qingdao are closely related to the changes of ecosystem services,among which the change in forest land use has the greatest impact on ecosystem services.