基于Exergy天津市生态经济系统可持续发展度量

发布时间：2018-06-20 22:38

本文选题：能质exergy + 城市　；参考：《生态科学》2014年04期

【摘要】：城市生态系统是复杂的高度人工化的复合生态系统,其正常的运转动力来自于外界能量的输入,Exergy作为热力学指标是指系统从给定状态到与其周围介质达到热力学平衡所需做的最大功,Exergy概念被生态学家借鉴应用于生态系统的研究,使它有了生物学的含义。在分析能量、能值和Exergy概念的内涵及总结Exergy的研究进展的基础上,通过构建城市尺度的能质账户分析模型,对天津市生态经济系统的能质效率进行了分析。将生态热力学的理论应用区域经济地理学定量研究中,结果表明,天津市总体的能质(exergy)输入从2003年的682.5PJ增加到2010年的1254.2 PJ,系统的总能质输出从1 42.0 PJ增加到299.8 PJ,能源输入总量快速增加,但总体的能质效率增加不大,提高资源和能源的利用效率方面还有较大的提升空间,这与采用其他方法的计算结果相一致,在该指标易于理解,可以为政府决策者在制定经济发展战略时提供有效理论支持。
[Abstract]:Urban ecosystems are complex, highly artificial, composite ecosystems, Its normal operating power comes from the input of external energy, Exergy, as a thermodynamic index, refers to the maximum work of the system from a given state to a thermodynamic equilibrium with its surrounding media. The concept of Exergy is used by ecologists for reference in the study of ecosystems. Give it a biological meaning. On the basis of analyzing the connotation of energy, energy and Exergy concepts and summarizing the research progress of Exergy, the energy and quality efficiency of Tianjin eco-economic system is analyzed by constructing an energy account analysis model on a city scale. Applying the theory of ecological thermodynamics to the quantitative study of regional economic geography, the results show that, The total energy input of Tianjin increased from 682.5 PJ in 2003 to 1254.2 PJ in 2010, the total energy output of the system increased from 142.0 PJ to 299.8 PJ, the total energy input increased rapidly, but the overall energy quality efficiency increased little. There is still much room for improvement in the efficiency of resource and energy utilization, which is consistent with the results of other methods. It is easy to understand in this index and can provide effective theoretical support for government decision makers in formulating economic development strategies.
【作者单位】：天津师范大学城市与环境科学学院;天津师范大学天津市水资源与水环境重点实验室;南开大学环境科学与工程学院;
【基金】：国家自然科学基金(41301096) 国家科技支撑计划项目课题(2012BAC07B02)资助
【分类号】：F127;F205;F224

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