analysisofemergybasedmetabolicefficiencyandenvironmentalpressureonthelocalcouplingandtelecouplingbetweenurbanizationandtheecoenvironmentinthebeijingtianjinhebeiurbanagglomeration

	analysisofemergybasedmetabolicefficiencyandenvironmentalpressureonthelocalcouplingandtelecouplingbetweenurbanizationandtheecoenvironmentinthebeijingtianjinhebeiurbanagglomeration
	Fang Chuanglin; Ren Yufei
刊名	sciencechinaearthsciences
	2017
卷号	60 期号:6 页码:1083
ISSN号	1674-7313
英文摘要	We use emergy-based urban metabolism analysis in this study to investigate the local coupling and telecoupling between urbanization and the eco-environment in the Beijing-Tianjin-Hebei urban agglomeration. Our analysis encompasses the last 35 years spanning the period between 1980 and 2014. In addition, we analyze urban metabolic efficiency and environmental pressure in these couplings. There are three main conclusions of this study. First, we show that the total metabolic emergy value of the Beijing-Tianjin-Hebei urban agglomeration has increased over the last 35 years, and that external elements have replaced internal ones as the leading contributors to urban metabolism in this region. The proportion of metabolic emergy derived from external elements increased from 30.87% in 1980 to 67.43% in 2014. The emergy extroversion ratio has continued to increase over our study period, while the development of this urban agglomeration had become progressively and more heavily reliant on external elements. Second, over the study period, the metabolic emergy intensity of elements of local coupling and telecoupling in the Beijing-Tianjin-Hebei urban agglomeration has declined at an accelerating rate, from 1.15x10(21) Sej/100 million RMB in 1980 to 9.69x10(19) Sej/100 million RMB in 2014. This reflects a continuous increase in the economic efficiency of this area. Correspondingly, emergy use per capita increased from 7.8x10(15) Sej/person in 1980 to 5.83x10(16) Sej/person in 2014, suggesting a gradual rise in the level of social welfare in this urban agglomeration. However, we also observed a consistently elevated environmental loading ratio (ELR) in our analysis in terms of metabolism of local coupling and telecoupling elements. This result indicates that environmental pressure has also increased constantly within the Beijing-Tianjin-Hebei urban agglomeration. Third, our analysis shows that the ELR of metabolic emergy from internal elements increased from 8.30 in 1980 to 43.46 in 2014, while the ratio from external elements increased from 4.15 to 92.03. Thus, we quantitatively investigated the dependency of development within this urban agglomeration on external elements as well as the resultant environmental load. The conclusions of this study provide the basis for quantitative policy-making in the Beijing-Tianjin-Hebei region, optimizing economic structures, improving economic efficiency, controlling environmental pollution, and promoting the coordinated development of this region.
资助项目	[National Natural Science Foundation of China]
语种	英语
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/120236]
专题	中国科学院地理科学与资源研究所
作者单位	中国科学院地理科学与资源研究所
推荐引用方式 GB/T 7714	Fang Chuanglin,Ren Yufei. analysisofemergybasedmetabolicefficiencyandenvironmentalpressureonthelocalcouplingandtelecouplingbetweenurbanizationandtheecoenvironmentinthebeijingtianjinhebeiurbanagglomeration[J]. sciencechinaearthsciences,2017,60(6):1083.
APA	Fang Chuanglin,&Ren Yufei.(2017).analysisofemergybasedmetabolicefficiencyandenvironmentalpressureonthelocalcouplingandtelecouplingbetweenurbanizationandtheecoenvironmentinthebeijingtianjinhebeiurbanagglomeration.sciencechinaearthsciences,60(6),1083.
MLA	Fang Chuanglin,et al."analysisofemergybasedmetabolicefficiencyandenvironmentalpressureonthelocalcouplingandtelecouplingbetweenurbanizationandtheecoenvironmentinthebeijingtianjinhebeiurbanagglomeration".sciencechinaearthsciences 60.6(2017):1083.