摘要
本研究以生态足迹理论为基础,将港口生产所消耗的资源和能源转换成耕地、林地、草地和水域等四种生态生产性用地,利用生物资源生态足迹、能源生态足迹、建筑生态足迹构建港口生态总足迹模型;同时,基于港口生态赤字和生态盈余构建港口生态承载力模型。最后,以北方某港区为例计算其生态足迹与生态承载力,算例计算结果表明:2012年该港区生态承载力指数为5.8,出现生态赤字,港区处于生态不可持续状态。该港区化石能源生态足迹占港区总生态足迹的95.3%,是该港区生态足迹的主要来源。该港区生态承载力全部来源于港区水域,港区拥有的水域面积有效提高了自身承载力,使港区生态承载力指数低于港区所在城市的生态承载力指数。
Based on the ecological footprint theory, the resources and energy consumed by port was transformed into four types of productive land, namely cropland, forest, grassland and water area. A port ecological footprint model was built up by making good use of biological resources, energy and construction ecological footprints. Meanwhile, a port ecological capacity model was built up on the basis of port ecological deficit and ecological surplus. Finally, the ecological footprint and carrying capacity of a Northern China port was calculated, which led to an ecological deficit and 5.8 ecological capacity index in 2012 as well as unsustainable port ecology. As main source, the fossil energy ecological footprint occupied 95.3% of the port ecological footprint. All port ecological capacity derived from the port water area, which improved effectively its ecological carrying capacity and made the port ecological capacity index lower than that of the port city.
出处
《港工技术》
2015年第2期48-51,共4页
Port Engineering Technology
基金
国家自然科学基金资助项目(51079022
51279026)
关键词
生态足迹
港口生态承载力
模型
ecological footprint
port ecological capacity
model
