engleski

Forest landscape restoration and the role of forest reproductive material in respect to growing climate change

In the Republic of Croatia the total area of forests and forest-land amounts to 2, 759, 039.05 hectares while area of forests suitable for restoration activities amounts to almost half of this coverage (National Forest Management plan 2016-2025). The share of coppice forests amounts to 14.4 % (359, 609.84 ha), degraded forests to 27 % (665, 794.35 ha) and forest cultures only to 3 % (73, 312.28 ha). In the viewpoint of climate change, the increase of various abiotic and biotic threats can be expected in the future. In addition, due to this threats, increasing forest areas are degraded and even disappearing (e.g. windthrow, drought, pathogen, forest fires, ...). New cliamte conditions as well as social circumstances have created a need for adapted approaches to forest management. There should be introduced efficient forest ecosystems in order to prevent the increase in forest degradation. Climate change adaptive strategies should include silvicultural solutions that embrace tree species and its provenances that aremore resistant and resilient to climate change. These new adaptive silvicultural approaches as well as all traditional ones, would not be applicaple without adequate support of nursery production. Clonal seed orchards present good background for continuous and quality production of forest seed used in nursery production. Since 1992 Croatian Forest Research Institute has been conducting control of total production of forest reproductive material in Croatia. This paper presents data acquired duringt expert supervision of nursery production. It also contains data per nursery (area, location, ownership), tree species and types of seedlings produced. Production of autochthonous broadleaved and conifer tree species account for the major part of nursery production whereas only a negligible share od seedlings production refers to native noble tree species. Beside these tree species, species which excel among non-native tree species in restoration activities are Douglas fir, Black walnut and Northern red oak. All analysed parameters ahow inportance of nursery production but also point to the need of harmonisation of existing production with growing restoration needs which should be included in adaptive management strategies.

Adaptation, cliamte change, new species selection, silvicultural solutions, expert supervision.

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