石家庄市土地利用变化及其生态服务功能响应

目的]探究土地利用变化对生态服务功能的影响,为今后研究区实现社会经济发展与生态环境稳定、土地可持续利用与发展提供理论依据和决策方法。方法]利用河北省石家庄市2000年和2010年的遥感影像数据,解译该2期土地利用类型图。并对2期土地利用图进行变化速度、内部转移矩阵、空间叠加分析,了解近10a来研究区的土地利用特征。应用谢高地和Costanza的研究经验,结合研究区实际,对生态服务功能价值进行计算,并作敏感性分析。并从单项生态服务功能价值、各土地利用类型生态服务价值对生态服务功能价值影响、生态服务价值流向等方面对土地利用变化的生态服务功能响应进行研究。结果]土地利用变化是引起生态系统服务价值变化的主要原因,其中林地和低矮灌木及草地生态系统对生态系统服务价值的提高有显著影响。结论]研究区10a间土地利用变化十分明显,土地利用整体趋势呈平衡状态,土地利用方向基本合理;保护区土地利用变化对生态服务功能影响显著,林地为主要土地利用类型,对生态服务功能影响最为显著。

Change of Land Use and Its Response of Ecological Service Function in Shijiazhuang City

Objective] To explore the impact of land use change on ecosystem services, and provide theoretical basis and decision-making methods for researching the socio-economic development and the ecological environment stable, and sustainable land use and development. Method] By using the remote sensing image data of Shijiazhuang City, Hebei Province in 2000 and 2010, the two phases of land use type maps were interpreted, and the velocity, internal transfer matrix, spatial overlay of two phase of the land use map changes were analyzed to understand land use characteristics of the study area in recent 10 years. Based on the research experience of Xie Gaodi and Costanza, combining with the reality of the study area, the ecological service function value and its sensitivity was calculated and analyzed. The respones of ecological service function on land use change were studied, based on the individua's ecological service function value, ecological service value impact of each land use type on the ecosystem service function value, and ecological service value flow. Results] The changes in the value of the services of ecosystems was caused by land use change, in which, the ecosystem of forest, low shrubs and grassland enhanced the value of ecosystem services significantly. Conclusion] The change of land use in the study area was very obvious from 2000 to 2010, and the land use overall trend was in balance and reasonable. The effect of land use change on ecosystem service was significant, and as the main land use type, forest land was the critical factor of ecosystem affecting land use change.