Evoluţia diversităţii structurale şi compoziţionale a arboretelor cu ajutorul indicelui UMF: un studiu de caz la nivel de unitate de producţie[The evolution of stand structural and compositional diversity assessed with the UMF index: A case study at production unit level]
| Autor: | Mihai Catalin Burlui, Radu Leontie Cenușă |
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| Jazyk: | English<br />Romanian; Moldavian; Moldovan |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Bucovina Forestieră, Vol 14, Iss 1, Pp 29-39 (2014) |
| Druh dokumentu: | article |
| ISSN: | 1582-0769 1582-3725 |
| Popis: | In this article we present the UMF index (Uneven-aged, Mixed, Forest) an index because the forest management, whose values are determined easily, data from management planning are the main support. The study was conducted in the Suha Mare area from Mălini, Suceava county. Wet analyzed stand descriptions for all stands for two periods (1956, 1995), using structural and site characteristics required by index. Data were obtained from management plans of the studied forest area. The index values were calculated for each stand, and its value for the total forest area was determined by summing the values calculated for stand, weighted by stand area. Index values vary between the two periods analyzed (1956, 1995), there are differences from a subplot to another, which is explained by the different treatments applied, the number of tree species and the structural heterogeneity, but also - for 1995 - by functional zoning that changed the forest management. UMF index is a good tool to determine structural and compositional diversity of a given area, using data from forest management plans. The results can be analyzed for longer periods of time and may indicate the direction of evolution of an area in relation with anthropogenic changes: from even-aged structure to uneven-aged, from monocultures to mixed stands. |
| Databáze: | Directory of Open Access Journals |
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