Towards energy sustainability: Exploring the nexus between global value chain participation and energy security in developing and developed countries.

International trade has a significant impact on global environmental quality and sustainable economic development. Global value chains (GVCs) have become a crucial component of international trade and development policy. The global production structure has become more complicated with the inclusion of domestic markets in GVC, putting significant pressure on world energy resources and environmental sustainability. Therefore, traditional trade measures no longer accurately reflect how global trade affects the energy security of developing and developed countries. Thus, this study is the first to use a panel-corrected standard error method to look at the relationship between GVC participation and energy security by using a global sample of 35 developed and 27 developing nations from 1995 to 2018. A feasible generalized least squares model was also applied to confirm the robustness of the model. Six indicators-foreign direct investment, industrialization level, capital formation, human capital index, political stability, and GVC-were used in this research to look at their impact on the four fundamental pillars of energy security (availability, applicability, sustainability, and affordability) for sustainable economic development. For developed countries, it was confirmed that there is a non-linear relationship between GVC participation and energy intensity, renewable energy consumption, and non-fossil fuel use. In the case of developing countries, the non-linear relationship in terms of all aspects of energy security was also confirmed. The findings also indicated that GVC's involvement benefits all four dimensions of energy security in both developing and developed countries once it reaches a certain threshold. Our findings further support the impacts of long-term cointegration between GVC and energy security for sustainable economic development. Therefore, the nations must promote technology transfer and capacity building within GVCs for inclusive energy security. Similarly, they may foster sustainable practices through collaborative governance for a stable global energy network by acknowledging the positive impact of income levels on energy security.

Carbon neutrality along the way to participate in global value chains: the threshold effect of information globalization of BRICS countries.

Using panel data from BRICS countries over the period 2000 to 2018, a multi-variate threshold model was built to investigate how global value chain (GVC) participation and information globalization affects CO2 emission. We further decompose the information globalization into two indicators, i.e., de facto measure and de jure measure. The main findings show that the estimated value of threshold is 4.02 and 1.81 for both de facto and de jur measures of information globalization. The findings suggest that information globalization rate above the threshold level negatively affects the carbon emissions. De facto and de jure measures show a strong single threshold effect when GVC participation is chosen as the major explanatory variable. Similarly, participation in GVCs has a large single threshold impact when information globalization is taken as the primary independent variable. Overall, the results show that the larger the information globalization for the countries under analysis, the modified impact of GVC participation on CO2 emission reduction is larger. The robustness test validates the stability and coherence of the study's findings. The opportunities that the information globalization along the approach to participate in GVCs presents for the accomplishment of carbon neutrality should be properly utilized by policymakers. There should be expansion the participation in GVCs with digital infrastructure and to enhance the assessment system for the use of technology spillover effects to increase environmental-friendly GVC ladder.

Sustainability assessment of different land tenure farming systems in tea farming: The effect of decisional and structural variables.

This study focuses on the sustainability of different land tenure farms in tea farming and explores the effect of structural and decisional variables on tea farm sustainability. For this, a total of 138 tea growers from the Rize province of Turkey were selected through a stratified sampling approach and interviewed directly. The positive and negative effects of independent variables on all dimensions of sustainability were emphasized after an extensive review of the literature. This reviewing activity also facilitated hypothesizing the possible influences of variables on overall tea sustainability. A tobit model was used to examine the influence of the structural and decisional variables on tea farm sustainability. The results described that owners were more sustainable compared with shareholders. Their economic and social sustainability levels were not significantly different from each other. However, environmental sustainability at owners' tea farms was more satisfactory than that of shareholders. Among structural variables, land slope, age of tea orchard, and farmers' age were negative influences, whereas cooperative membership and terrace status affected tea farm sustainability positively. Similarly, among decisional variables, family labor, fertilizer application methods, farmers' willingness to perform a soil test, and sale value of tea had positive influences, whereas the cost of chemical fertilizers had a negative influence on tea farm sustainability. The land tenure was found to have a significant effect on sustainability when the tea farmer was the owner of the farm. Thus, farmers should replant their orchards on time, and adopt sustainable practices such as terracing and employing environment-friendly fertilizer application methods for increasing tea sustainability in the locality. Integr Environ Assess Manag 2021;17:814-834. © 2020 SETAC.

Evaluating eco-efficiency and optimal levels of fertilizer use based on the social cost and social benefits in tea production.

The extensive use of synthetic fertilizers is increasing continuously to meet the growing demand of food worldwide. This excessive use of fertilizer not only pose a threat to the sustainability but also cause negative externalities in form of hidden social cost to the society The present study estimated social costs and benefits associated with excessive use of chemical fertilizers at tea farms and also evaluated eco-efficiency of tea growers in Rize Province of Turkey. Data envelopment analysis (DEA) was used in this study. Tea growers are 68% eco-efficient in the locality. They can reduce their average fertilizer use from 115.45 to 66.45 kg and labor from 9.88 to 8 days per decare. The overuse of fertilizers at tea farms emits 289.3 kg/hectare of greenhouse gases. Therefore, by applying the eco-efficient fertilizer target level, 1574.48 tons of gas emissions only in Rize Province and 23,997.57 tons in whole Turkey can be reduced. The cost of 1 kg gas emissions was calculated as 0.3316 TL. The optimal level of fertilizers (social costs = social benefits) was also similar to the target level. The fertilizer use efficiency analysis showed that the tea growers cannot only reduce their fertilizer quantity by 49.03 kg/decare without compromising the crop yield, but can also contribute to the healthy environment with a low level of greenhouse gas emissions. Tea growers should replace their older tea orchards with new ones in order to achieve social and eco-efficient levels as well as to maintain viable yield level.