Sustainable use and management of non native trees in the alpine region

Activity A.T3.1 Technical guidance

D.T3.1.1 Open database on management measures

The open database will contain information on on-going and past non-native tree (NNT) management actions in the Alpine Space and elsewhere. The focus lies on the description of measures, costs/benefits, risks, and efficiency of measures. All knowledge materials produced for this deliverable will be available to other organisations/regions/countries outside the current partnership.

Download: deliverable-d.t3.1.1-open-database-on-nnt-management-measures.pdf

D.T3.1.2 three handbooks on NNT Identification, NNT in urban areas and NNT in forests

D.T3.1.3 Report on optimisation measures

Urban areas undoubtedly require non-native tree management approaches that differ from those applied in forest areas; specific attention must be paid to the way in which cities are built, to how existing rivers – natural features which, when joined with other natural or artificial transport carriers, can exacerbate invasion risks– are related to green areas, and to the problem of private land and what the respective owners want to plant. This report focuses on the optimization measures for municipalities to manage NNT in small urban woodland.


Activity A.T3.2 Knowledge transfer

D.T3.2.1 Draft of training material

D.T3.2.2 ALPTREES Webinar

In the course of a total of six chapters that build on each other, knowledge is imparted to you in the form of theoretical and practical parts. Exciting practical examples will help you to understand the risk and opportunities of non-native trees. When and where you continue working on the course is entirely up to you. Upon successful completion of the course, you will also receive an ALPTREES Certificate at the end!

Start our online course right now and become an expert on non-native trees yourself!

D.T3.2.3 Online Training course

In this online course, dedicated experts from the ALPTREES project take you on an exciting journey of discovery into the world of trees in urban, peri-urban, and forest ecosystems. Our motivation is to discuss the controversial effects of negative and positive impacts of non-native trees and to provide science-based technical guidance for the management and responsible use of non-native trees in the Alpine Space. Each citizen of the Alpine Space has a chance to learn more about the diversity of native and non-native trees species!

A.T3.3 Research on the value of the wood of NNT and development of the process of its Usage

D.T3.3.1 Assessment report on the usage value of wood from local autochthonous native trees and NNT trees

Although NNT products are already widely used in Europe, they have not received attention in the New EU Forestry Strategy agenda. Accordingly, the ALPTREES project has the merit of promoting the added value of NNTs for Europe´s forests and related value chains. The authors also open the debate on the existing and potential markets of NNT assortments and create more confidence in their current and future use. The document can be seen as a first attempt to raise awareness among customers and decision makers about the use of NNT wood. In a compact format, the report summarizes the practical scientific findings on the most important NNT species for the timber market. The report also provides a preliminary outlook on the economic value of NNTs wood products along the timber value chains of some Alpine countries. Furthermore, it illustrates in a simple and intuitive way some valuable experiences made by companies active in the Alpine Space.


It started out as a school activity in September 2021, conducted by the development agency Sora in Skofja Loka, Slovenia. The Secondary school of wood engineering was invited to create products with timber of non native wood. It all results in The ALPTREES Exhibition of the wooden products from Invasive Non-Native and overlooked Native Wood Species that took place from 15th of February until 25th of March 2022 at the Art & Crafts Centre DUO Škofja Loka.


Activity A.T3.4 Pilot actions

D.T3.4.1 Pilot action I, Turin province

This report presents the main results of the pilot action carried out by LAMORO Development Agency in Val di Susa (Susa Valley), a valley in Piedmont region, North-West of Italy, with the aim of informing and sharing the knowledge acquired during the implementation phase. The reference area are the municipalities of Almese and Caselette and the Natura 2000 site “IT1110081- Monte Musinè e Laghi di Caselette” (Monte Musinè and Caselette Lakes), a natural area of Piedmont recognized as a Site of Community Importance. The pilot action focuses on the inclusion of non-native tree species (NNT) in forest management planning and intends to find an important reference in the programming documents in force or in the process of being approved in the reference area.


D.T3.4.3 Pilot action II, Trento

In urban areas of the Alpine Area, native species are facing multiple challenges. They are increasingly affected by diseases, parasites and high temperatures due to climate change, for this reason some tree species used in urban green planning, up to a few decades ago, were thought to be unsuitable. It is therefore important to have growth strategies that include the presence of new tree species in projects designed to adapt to climate change as well as considering the future effects on society. Non-native tree species (NNTs) offer many benefits and provide new opportunities, contributing to making urban greenery more resilient to climate change. On the other hand there is the risk of infesting NNT in urban and extra-urban areas. it is necessary to monitor the introduction of new species and contrast where they are already present.


D.T3.4.4 Pilot action III, Freiburg

As a result of climate change, modifications in tree species composition of many forest ecosystems are becoming increasingly important. With this in mind, there is growing interest in the cultivation of more drought-tolerant tree species, including non-native species such as the Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). Forest compositions and thus the perception of trees can also influence the recreational function of forests, especially near cities. Yet, little knowledge exists regarding the perception of individual tree species, especially non-native tree species. In this study, the perception of Douglas-fir in the city of Freiburg (south-west Germany) was investigated by surveying forest visitors online. The analysis showed that Douglas-fir is recognized by the majority of the participants.


D.T3.4.5 Pilot action IV, Klagenfurt

Green Spaces in cities have a strong influence on the microclimate due to their size and dense vegetation. The focus of this pilot action lies on the dynamic climate modeling of five selected urban forests and their effect on climate indices with regard to heat stress in Klagenfurt.



D.T3.4.6 Pilot action V, France

In France, the activities of the Alptrees project are carried out in the pilot area located in the Rhône-Alpes region and corresponding to the territories of the Communauté de Communes Le Grésivaudan. The choice of this pilot site was conditioned by the territory's desire to develop an adaptive and integrated forest ecosystem services management coping with climate change adaptation.