Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: " Non-indigenous plant species and their ecological range in Central European pine (Pinus sylvestris L.) forests" | Ann. For. Sci. 63 2006 189-203 INRA EDP Sciences 2006 DOI forest 2005111 189 Original article Non-indigenous plant species and their ecological range in Central European pine Pinus sylvestris L. forests Stefan Zerbe Petra Wirth Institute of Ecology Technical University Berlin RothenburgstraBe 12 12165 Berlin Germany Received 21 January 2005 accepted 30 June 2005 Abstract - In this study forest ecosystems were analysed with regard to the occurrence and ecological range of non-indigenous plant species. Pine forests in the NE German lowland which naturally and anthropogenically occur on a broad range of different sites were taken as an example. The analysis is based on a data set of about 2 300 vegetation plots. The ecological range was assessed applying Ellenberg s ecological indicator values. Out of a total of 362 taxa recorded in the pine forests only 12 non-indigenous species including trees shrubs annual and perennial herbs and one bryophyte were found. They commonly grow on sites with relatively high nitrogen availability and soil reaction values. Most species are native to North America. Taking into account that a high proportion of the investigated pine forests is of anthropogenic origin and will naturally develop towards broad-leaved forests with beech and oak it is hypothesised that most of the observed invasions are reversible. Ellenberg indicator values forest development human impact nitrogen availability plant invasions Résumé - Espèces non indigenes et leur habitat écologique dans les forets de pins Pinus sylvestris L. de l Europe Centrale. Dans cette étude les écosystèmes forestiers ont été analyses eu égard à l occurrence et à l habitat écologique des espèces de plantes non-indigènes. Les forets de pins dans les plaines du NE de l Allemagne dans lesquelles il existe naturellement et anthropogénétiquement une large gamme de sites différents ont été prises en exemple. L analyse s appuie sur un ensemble de données d environ 2300 placeaux. La .
