网络视角下城市物质代谢过程解析——以京津冀13城市为例

Abstract

PDF HTML阅读 XML下载 导出引用 引用提醒 网络视角下城市物质代谢过程解析——以京津冀13城市为例 DOI: 10.5846/stxb202204221104 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 国家重点研发计划项目（2016YFC0503005）；国家自然科学基金项目（41871213） Analysis of urban material metabolism from the perspective of network: A case study of 13 cities in Beijing-Tianjin-Hebei Region Author: Affiliation: Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:城市作为物质吞吐量的集中区，往往存在一定的资源消耗和环境问题。京津冀是中国北方经济规模最大的地区，负载着巨大的资源环境压力。以京津冀地区为例，在计算城市物质输入与输出的基础上，运用生态网络分析方法对代谢系统内部的具体路径和节点关系进行深入探究，并分析其变化。结果表明，京津冀地区97%的流量都集中于各城市内部，各城市之间的优势互补有待加强。2017年京津冀13城市代谢总流量增长为2000年的3.3倍，其中承德、秦皇岛和唐山增长最为迅速，而衡水是唯一一个流量下降的城市。各城市的关键路径中有71.8%呈现流量上升态势，加工制造业为涉及关键路径最多的部门，其中加工制造业-环境为大多数所有城市共有的关键路径。掠夺/控制是京津冀13城市的主导关系类型；2000-2017年间13城市总体的生态关系良性转变少于劣性转变，致使共生关系数量下降，需要从交通运输业、采掘业和加工制造业等重点部门上寻求突破。关键路径及生态关系等代谢网络特征及其变化的识别，有效打破了城市代谢的"黑箱"，为缓解不同城市物质利用所带来的资源环境问题提供可靠理论依据。 Abstract:As a concentrated area of material throughput, cities are often faced with some problems of resource and environment. The Beijing-Tianjin-Hebei region has the largest economic scale in northern China, so it is bound to be burdened with huge pressure on resources and environment. From the perspective of metabolism and based on the calculation of urban material input and output, this study selected the Beijing-Tianjin-Hebei region as an example, used the ecological network analysis method to deeply explore the specific path and node relationships within the metabolic system, and analyzed the changes from time. The results showed that 97% of the flow amount was within the cities, indicating the need for cities to strengthen their complementarity. The total metabolic flow of 13 cities in the Beijing-Tianjin-Hebei region increased by 3.3 times that of 2000 in 2017, with Chengde, Qinhuangdao and Tangshan growing the most rapidly, while Hengshui was the only city with a decrease. Among the key paths of each city, 71.8% showed an upward trend of flow, and a high degree of sectoral concentration. Manufacturing became one sector most involved in the key paths, and manufacturing-environment was the key path type that existed in most cities. The exploitation and control were the dominant relationship type in the 13 cities. From 2000 to 2017, the positive change of ecological relationship was less than the negative change, which may require breakthroughs in key sectors such as transportation, mining and manufacturing. The identification of metabolic characteristics and their changes, such as key path and ecological relationship, effectively opened the "black box" of urban metabolism, and reliable theoretical basis for alleviating the resource and environment problems caused by urban material utilization. 参考文献 相似文献 引证文献