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This research evaluates how the carbon emission trading (CET) policy influences net primary productivity (NPP) across Chinese cities.

May 21, 2026Geoscience FrontiersOpen Access

Does the carbon emission trading policy enhance carbon sinks? evidence from Chinese cities

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This research evaluates how the carbon emission trading (CET) policy influences net primary productivity (NPP) across Chinese cities.
Utilized city-level panel data to analyze the impact of the CET policy on NPP.
Employed difference-in-differences (DID) and instrumental variables for causal estimation.
Examined variations of the policy's impact across different city types and assessed spatial spillover effects.
The CET policy correlates with a 3.37% increase in NPP, confirmed by robustness tests.
Significant effects observed primarily in high-industrialisation and high-environmental-concern cities.
The policy leads to positive spillover effects, increasing NPP in neighboring non-pilot cities.

Authors

XZXiao ZhangHebei Medical University HZHuayong ZhangAnhui University XTXinru TianUniversity of International Business and Economics

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Implication

Randomized trial finds the carbon emission trading policy enhances carbon sinks in cities, suggesting improvements in environmental regulations are necessary.

Cite This Study

Zhang et al. (2026) studied this question.

synapsesocial.com/papers/6a0ea0f7be05d6e3efb5f5cb https://doi.org/10.1016/j.gsf.2026.102356

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Implication

Randomized trial finds the carbon emission trading policy enhances carbon sinks in cities, suggesting improvements in environmental regulations are necessary.

Does the carbon emission trading policy enhance carbon sinks? evidence from Chinese cities

Key Points

Discussion

Implication

Cite This Study

Does the carbon emission trading policy enhance carbon sinks? evidence from Chinese cities

Key Points

Discussion

Implication

Cite This Study

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