Wu Meng, Ren Xiangyu, Che Yue, Yang Kai
Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai, 200241, China.
Environ Manage. 2015 Aug;56(2):402-19. doi: 10.1007/s00267-015-0512-2. Epub 2015 Apr 30.
Most of the cities in developing countries are experiencing rapid urbanization. Land use change driven by urban sprawl, population growth, and intensified socio-economic activities have led to a steep decline of ecosystem service value (ESV) in rapid urbanization areas, and decision-makers often ignore some valuable ecosystem service functions and values in land use planning. In this paper, we attempt to build a modeling framework which integrated System Dynamics model with Conversion of Land Use and its Effects at Small Extent model to simulate the dynamics of ESV of landscape and explore the potential impacts of land use change on ESV. We take Baoshan district of Shanghai as an example which is a fast urbanization area of metropolitan in China. The results of the study indicate that: (1) The integrated methodology can improve the characterization and presentation of the dynamics of ESV, which may give insight into understanding the possible impacts of land use change on ESV and provide information for land use planning. (2) Land use polices can affect the magnitude and location of ESV both directly and indirectly. Land use changes tend to weaken and simplify ecosystem service functions and values of landscape at urban rural fringe where land use change is more intensive. (3) The application of the methodology has proved that the integration of currently existing models within a single modeling framework could be a beneficial exploration, and should be encouraged and enhanced in the future research on the changing dynamics of ESV due to the complexity of ecosystem services and land use system.
大多数发展中国家的城市正在经历快速城市化。由城市扩张、人口增长和强化的社会经济活动驱动的土地利用变化,导致快速城市化地区的生态系统服务价值(ESV)急剧下降,而决策者在土地利用规划中往往忽视一些有价值的生态系统服务功能和价值。在本文中,我们试图构建一个将系统动力学模型与小尺度土地利用变化及其影响模型相结合的建模框架,以模拟景观ESV的动态变化,并探讨土地利用变化对ESV的潜在影响。我们以上海宝山区为例,它是中国大都市的一个快速城市化地区。研究结果表明:(1)综合方法可以改进ESV动态变化的表征和呈现,这可能有助于深入理解土地利用变化对ESV的可能影响,并为土地利用规划提供信息。(2)土地利用政策可以直接和间接地影响ESV的大小和位置。土地利用变化往往会削弱和简化城乡边缘地区景观的生态系统服务功能和价值,那里的土地利用变化更为密集。(3)该方法的应用证明,在单个建模框架内整合现有模型可能是一次有益的探索,并且由于生态系统服务和土地利用系统的复杂性,在未来关于ESV动态变化的研究中应予以鼓励和加强。