Vol. 67, No. 1 * Pages 1–69 * March 2022

Rapid climate change poses a huge challenge for forestry due to the length of the production cycle. Considered earlier as a static value, the site potential has become a dynamic factor in forest planning. The Agrárklíma decision support system provides background data for estimations. The system proposes suitable tree species, estimates their yield potential and identifi es also sources of preadapted populations. Reference climate periods may be selected until 2100. The geoinformatic system provides forest-related data of the past and future by land use units (compartments), based on background maps of 1 ha resolution (geography, soil, climate, hydrology etc.).

The eff ects of climate change are generally perceived in the long term, but for energy systems that require serious planning and preparation work, it is a prerequisite to determine conclusions and solutions in advance based on the operating environment and the processes and impacts described in this article.

The European Climate Law, adopted in 2021, is the first legally binding EU document stating that the community must become the first climate-neutral region in the world by 2050. The adoption of this piece of legislation was prepared by several important political and scientific events. The Climate Law will be a key factor in EU decision-making, as it clearly sets out the strategic objectives that EU legislation must meet. It also sets medium-term goals, which will be the preconditions for the achievement of the long-term goals. It will also ensure to channel the latest scientific results into the decision-making process more effectively by setting up a scientific advisory body at the European level. Of course, this new framework will also have a significant impact on Member States’ room for maneuver. The study analyzes the potential impact of these developments at Member State level.

Agroecology (AE) has emerged as a sustainable agriculture approach linking scientifi c discipline, agricultural practices and social movement that together represent a framework and tools for agricultural transition. In the
trAEce project, research was conducted to investigate the concept of AE in Hungary at farm level. Interviews with
17 practitioners were achieved in order to assess their perspective on AE. Questions explored farmers’ motivation towards adhering to the elements of AE that also include climate change mitigation and show the barriers to the widespread adoption of AE. The research, based on the FAO 10 elements of AE, identifi ed the strengths and weaknesses that characterize the various approaches of farmers, including their existing climate adaptive methods.

In the present work the phytochemical eff ects of climatic stress to European beech (Fagus sylvatica L.) populations were evaluated using a provenance test. The test was conducted in the framework of an international test series of IUFRO (International Union of Forest Research Organizations), at the experimental site at Bucsuta, Hungary, with the involvement of 6 relevant provenances. Selected enzymatic (peroxidase: POD, polyphenol oxidase: PPO) and non-enzymatic antioxidants (polyphenolic composition, ABTS (2,2’-azino-bis-(3-ethylbenzothiazoline)-6-szulphonic acid) antioxidant capacity) as well as the total protein content were measured from the leaves of selected populations. Results were compared with climatic indexes and average growth parameters of the populations. According to the results signifi cant correlations were found between phenotypic (growth) response to simulated climatic stress and the activity of selected chemical components. The concentrations of certain polyphenols, POD enzyme activity, and total protein content may be chemical indicators of the acclimation potential of populations and may contribute to the forecasting of climate change eff ects, which can aid in the selection of suitable propagation material for adaptive silviculture.

The yellow fever mosquito is one of the most signifi cant arthropod vectors. This mosquito was widespread on the Mediterranean shores at the turn of the 19th and 20th centuries. It is currently found in Europe only on the Black Sea. The present study was performed to model the past, the reference period, and the expected future distribution of the species on the continent. A comparison of modelled climatic suitability values for the past and recent periods show that there is no climatic limit to the presence of the species on the Mediterranean coast. In the future, the climatic conditions of the Sothern regions of Europe will improve signifi cantly for the Yellow fever mosquito, and even the climate in the southern parts of the Carpathian Basin may become suitable for the species.

Extreme weather situations often cause signifi cant damage or disruption of the domestic infrastructure, particularly transport and electricity supply. The present study, in the third part of a multi-part analysis, shows weather conditions and appearance of severe convection and their impact to power supply.