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808期 7月3日 :The Economics of Tipping Points(Chuan-Zhong Li, Department of Economics, Uppsala University, Sweden; the Beijer Institute, Royal Swedish Academy of Sciences, Sweden)

【主讲】Chuan-Zhong Li (Department of Economics, Uppsala University, Sweden; the Beijer Institute, Royal Swedish Academy of Sciences, Sweden)

【主题】The Economics of Tipping Points

【时间】2017年7月3日 (周一) 15:30-17:00

【地点】上海财经大学经济学院楼402室

【语言】英文

【摘要】What is a tipping point? A well-known metaphor is the “last straw” that breaks the camel’s back. When a critical load is reached, a minor addition may cause large and abrupt reactions. Formal models that can explain such a phenomenon usually have the following property. When some variable is gradually changed, the state of the system remains in an area with a high level of ecological services. However, at some critical point, a sudden shift occurs to a state in an area with a low level of ecological services. In such a case, the system has moved into another domain of attraction. This is called a regime shift, and the point where it happens is called a tipping point. Turning back the direction of change will not immediately restore the level of ecological services, and it may even be impossible to restore it (irreversibility). In this talk, I will provide an interpretive overview on the development of the research area “the economics of tipping points” with special reference to social-ecological systems. First, I will introduce the typical types of tipping points from metaphor to reality, and from planetary boundaries to local ecological thresholds (including some cases in China). Then, I will present the prototype economics models for dealing with tipping points of different characteristics, deterministic and known, deterministic and unknown, and stochastic thresholds. Finally, I will briefly go through the new contributions in this research area, published in the special Environmental and Resource Economics issue in November 2016, edited by me and Aart de Zeuuw at Tilburg University.

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