山东半岛城市扩展模式与生态足迹的关系

理解城市扩展模式与生态足迹动态之间的关系是区域可持续性研究的重要内容,对实现城市可持续发展具有重要指导意义。然而,目前对这二者关系探索的实证研究较少。以山东半岛城市群为例,掌握其2000—2010年的城市扩展模式与生态足迹动态特征,并探索二者之间的关系。采用景观扩展指数和生态足迹模型对研究区的城市扩展模式和生态足迹动态进行计算。在此基础上,将该区44个县划分为4种类型,用相关分析法对城市扩展模式和生态足迹动态的关系进行探索。结果表明,2000—2010年山东半岛城市群的城市用地面积增量加了1.2×10~5hm~2,增幅为19.4%。44个县均体现出边缘型扩展面积最大,生态赤字增加的特点,平均赤字增量为1.26 hm~2/人。垦利等27个县的外延式扩展面积与生态赤字增加量存在较显著的正相关关系,在济阳等17个县中,二者未呈现出相关关系。建议垦利、淄博和青岛等地区在未来城市发展中,控制飞地型和边缘型扩展面积总量,发展清洁能源,遏制化石能源足迹的增长趋势。

Urban expansion modes and regional ecological footprints in the Shandong Peninsula Urban Agglomeration

Understanding the relationship between urban expansion modes and regional ecological footprints is an important objective in regional sustainability research, and can provide crucial guidance for achieving urban sustainable development. However, empirical research on the relationship between urban expansion modes and ecological footprints is limited. Taking the Shandong Peninsula Urban Agglomeration as an example, the goals of the present study are to examine the characteristics of urban expansion modes and ecological footprint dynamics from 2000 to 2010, and to analyze the relationship between them. We quantified the urban expansion modes and ecological footprint dynamics using the landscape expansion index and ecological footprint model. Then, we divided the 44 counties in the study area into 4 types, and analyzed the relationship between urban expansion modes and ecological footprint dynamics among them using a correlation analysis. The results showed that urban land area of the Shandong Peninsula Urban Agglomeration increased by 1.2×10⁵ hm² (19.4%), and the average ecological deficit increased by 1.26 hm² per capita from 2000 to 2010. In all 44 counties, the area of edge-expansion growth was the largest and the ecological deficit increased. There was a significant positive correlation between epitaxial expansion areas and the ecological deficit increment in 27 counties, such as Kenli. However, 17 counties did not show significant correlations. In the future, for sustainable development in this region, controlling the area of outlying and edge-expansion growth, utilizing new clean energy, and limiting the fossil fuel footprints in several counties, such as Kenli, Zibo, and Qingdao, should be the focus.