• Energy Research

Agricultural exports are vulnerable to many distance factors such as geographical, cultural, economic and institutional distance. Panel data were collected from 63 countries (from 2002 to 2020), and fixed effects regression models were employed to estimate the impact of multidimensional distance on China’s agricultural exports. Results found that the institutional, geographical, and cultural distance negatively impacted China’s agricultural exports significantly. The economic distance significantly promoted exports due to the demand and complementarity of trade between countries. After the technological added value is considered, the cultural distance significantly promoted the export of high-tech agricultural products. It is confirmed that the institutional distance remained the greatest obstacle to agricultural exports, and economic distance promoted agricultural exports. It is imperative to focus on promoting mutual cultural understanding and communication of institutional policies to stimulate agricultural exports and improve the exports of agricultural products of high technological content.

Abstract Energy efficiency improvement is widely recognized as a cost-effective measure for clean production. In the literature of rebound effects of energy efficiency improvement represented by energy intensity reductions, potential energy savings and actual energy savings are not well defined and properly clarified. To address this issue, this study comprehensively discusses and clarifies how to define and estimate potential and actual energy savings in the assessment. We focus on the well-known concept of rebound effect and propose a new notion of optimal rebound effect, which avoids the counter-intuitive values in cases of energy intensity increases in neighboring years. The optimal rebound effect must be assessed by an optimization approach, while the traditional rebound effect assumes the observed next-year data as the case of energy intensity reduction. For illustration, a non-radical data envelopment analysis model is used to estimate the potential energy intensity reduction, which serves to assess the optimal rebound effects in four Asian countries including China, India, Japan and Korea, during the period 1973–2017. The findings indicate that neither backfire nor super-conservation appears in the estimated optimal rebound effects.