Emergy Based Decoupling Analysis of Ecosystem Services on Urbanization: A Case of Shanghai, China

Hengyu Pan, Yong Geng, Ji Han, Cheng Huang, Wenyi Han and Zhuang Miao
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Hengyu Pan: Institute of Ecological and Environmental Science, Sichuan Agriculture University, Chengdu 611130, China
Yong Geng: SJTU-UNIDO Joint Institute of Inclusive and Sustainable Industrial Development, School of International and Public Affairs, Shanghai Jiao Tong University, Shanghai 200240, China
Ji Han: Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
Cheng Huang: School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
Wenyi Han: Department of Geography, The University of Hong Kong, Pokfulam Road, Hong Kong, China
Zhuang Miao: Western China Economic Research Center, Southwestern University of Finance and Economics, Chengdu 611130, China

Energies, 2020, vol. 13, issue 22, 1-25

Abstract: In order to respond to rapid urbanization, understanding the relationships between urbanization and ecosystem services (ESs) is of practical importance to move toward sustainable urban development. In this study, an emergy-GIS based method is proposed to evaluate ESs. Spatiotemporal emergy values of water retention (WR), air purification (AP), carbon sequestration (CS), soil conservation (SC), and biodiversity conservation (BC) were quantified and relationships among these ESs were analyzed by taking China’s largest city, Shanghai, as a case. The decoupling analysis was conducted to study the relationship between urbanization and ESs. Results show that the total value of regulating ESs had declined by 8.24% from 2005 to 2010. Chongming had the largest value of ESs, followed by Pudong. There is a synergetic relationship among AP, CS, and SC, while a tradeoff appears between WR and other services. Irregular “U” shape relationships between the decrease of ESs and urbanization indicators were observed. Results from decoupling analysis show that ESs experienced weak decoupling from urbanization in most districts. Finally, policy implications were raised based on the study results.

Keywords: urbanization; ecosystem services; emergy accounting; decoupling analysis; Shanghai (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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