Decoupling Relationship between Urbanization and Environment in an Agricultural Region: A Case Study of Western Songnen Plain

Authors: YUMEI LIU*, 1 School of Environmental Science and Engineering, Suzhou University of Science and Technology; 2 Department of Environmental Conservation, University of Massachusetts, Timothy Randhir, Department of Environmental Conservation, University of Massachusetts Amherst
Topics: Human-Environment Geography, China, Agricultural Geography
Keywords: urbanization, grain production, resources-environmental pressure, coupling, decoupling
Session Type: Poster
Day: 4/6/2019
Start / End Time: 9:55 AM / 11:35 AM
Room: Lincoln 2, Marriott, Exhibition Level
Presentation File: No File Uploaded

Economic and social development and rapid urbanization in recent years has increased conflicts among urban system, grain production system and environmental systems in China. Taoer River Basin, one of the major commodity grain production base of China, is located at the western part of the Songnen Plain. It is a typical region with fragile and weak ecology and sensitive environment´╝îideal for studying urbanization and environment in agricultural region. Based on the theory of sustainable urbanization, this paper constructs the urbanization index, grain production index and resources-environmental pressure index, analyzes the trends of these index and their sub-indexes from 2007-2016 in western Songnen plain, and studies the coupling relationship among urbanization , grain production ability and resources-environmental pressure in the means of decoupling model. The results show that: (1) In the past 10 years, the urbanization index of the Western Songnen Plain has shown a slow growth trend. The development speed and development level of population urbanization and social urbanization index are lower than spatial urbanization and economic urbanization. The output and input of grain production are both volatile growth trends. Before 2009, the environmental and resource pressure mainly came from environmental, while after 2009, this pressure is mainly from resources consumption. (2)The relationship among the three systems was mainly characterized by decoupling. The recurrence of weak decoupling and strong decoupling reflects the complex relationship and dynamic evolution among them. The results indicate that the relationship among these 3 systems is relatively coordinated.

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