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China has established three rounds of low-carbon pilot city initiatives. However, a gap exists between policy making and successful implementation, and the effects on greenhouse gas (GHG) emission reduction were found to be different among pilots. This paper considers the question of how low-carbon policies in cities can be implemented effectively and how policy combinations are adopted for GHG emissions reduction. It uses a mixed research approach, including Qualitative Comparative Analysis (QCA) and field investigation in Pilot Y (situated in the southwest China). The results show that, first, financial support and monitoring systems are necessary conditions, while political leadership is a sufficient condition. This means that the absence of financial support or monitoring systems could lead to increased GHG emissions, while the presence of political leadership always promotes the reduction of GHG emissions but may not be sufficient on its own to achieve them. Second, the target responsibility system (TRS) – a system used by higher government levels to assess the policy implementation of lower government levels – and human resource mechanisms cannot effectively lead to the promotion of GHG emissions reduction. Finally, in the absence of TRS and human resource mechanisms, environmental information disclosure (EID) was found to effectively promote low-carbon urban development by encouraging public participation. This paper reveals the complexity of the implementation of low-carbon policies in cities, identifies the link between city-level and national action, and enriches the theoretical explanation of governance and low-carbon policy implementation gaps in China. Key policy insights China's low-carbon pilot city project is critical for reducing GHG emissions, however, the effects of the low-carbon pilot city programmes varied greatly. Financial support and monitoring systems are necessary conditions, while political leadership is a sufficient condition to achieve cities' GHG emissions reduction goals. Local low-carbon development is limited and not put into practice at the city level in China, in part because of the absence of financial support and limited political attention. This study highlights the key conditions of organizational behaviour at the meso-level, and enriches the theoretical explanation of environmental policy implementation gaps in China. [ABSTRACT FROM AUTHOR]

In this paper, we empirically evaluate the effect of climate change on agricultural technical efficiency, considering the moderating effect of mitigation efforts based on emission reduction in China. In particular, we directly measure the intensity of mitigation efforts using the climate change mitigation index. We then apply the two-stage double bootstrap DEA method to build up the empirical model, effectively avoiding biased estimation using the traditional two-stage DEA method. Our results show that the intensity of mitigation measures moderates the impacts of global warming on efficiency and mild mitigation measures are better than drastic ones. [ABSTRACT FROM AUTHOR]

This study assesses the need for a future climate change protocol with the aim to protect the environment and reduce global warming trends. Such protocol shall provide a framework for developed nations, such as the United States, as well as developing nations, such as China, in order to further improve both their economy and their standards of living. Considering the elaboration of the future emission reduction framework, a comprehensive understanding of the current and future energy consumption portfolios is provided. The United States and China were used as illustrative examples and the existing emission reduction policies as basis. As a result, it was found that there is an urgent need to formulate such protocol. [ABSTRACT FROM PUBLISHER]