Smart Energy and Sustainable Environment , ISSN 2668-957X
2021, Volume 24, Issue 2
Pages 43-58


Mihaela Iordache 1 , Ramona Ionela Zgavarogea 1 , Andreea Maria Iordache 1 , Marius Constantinescu 1 , Felicia Bucura 1 , Roxana Elena Ionete 1 , Remus Grigorescu 2 , Constantin Nechita 3,4*

1 National Research and Development Institute for Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, Uzinei Street no. 4, PO Box Râureni 7, 240050, Râmnicu Vâlcea, Romania
2 Constantin Brancoveanu University, Bulevardul Nicolae Bălcescu 39, 240177, Râmnicu Vâlcea, Romania
3 National Research and Development Institute for Forestry "Marin Drăcea" Calea Bucovinei, 73 bis, 725100, Câmpulung Moldovenesc, Romania
4 Department of Forestry, University of Suceava “Ștefan cel Mare”, Universității 13, 720229, Romania

*Corresponding authors: Constantin Nechita, E-mail: and Ramona Zgavarogea, E-mail:

Received 14 January 2021; Received in revised form 26 February 2021; Accepted 7 July 2021; Available online 8 November 2021


The European mitigation strategy for combatting climate change requires up-to-date knowledge about the environmental effects of greenhouse gas (GHG) emissions at the national scale. As a strong response to the consequences of climate change, the European Union has imposed on the member states an obligation to achieve the goals set out in the climate and energy package, which were aimed at reducing emissions. Therefore, underlying the trends of GHG emissions is essential when establishing climate change mitigation measures. This study identify the structure and dynamics of the GHG emissions of the six sectors of the European economies, over 27 years, and reveal the significance, direction, rate, and drivers of the observed trends using the method of modifying the absolute mean.  The results indicate a decrease in the GHG emissions in the EU-28 by an average of 1% annually, which can be explained by a mixt factors, such as resize of the industry, improved energy efficiency, the growing share of renewables and less use of carbon fuels. Moreover, through the environmental policies adopted in the last decade, was observed that the GHG emissions level in 2017 had declined by approximately 25% in comparison with the reference (1990) and by approximately 17% by 2005. From the 28 EU countries (EU-28), Romania produced 4.2% of the total EU-28 GHG emissions in 1999, which decreased to 2.7% in 2005 and reaching 2.3% in 2017. Romania contributed to 14% of the average annual decrease in emissions. This evidence highlights the additional support for further reduction beyond that required for climate change mitigation.


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  • Keywords

    climate change; CO2; environmental policies; greenhouse gas emissions; sustainable development

    Tag search climate change CO2 environmental policies greenhouse gas emissions sustainable development