Restoration of natural vegetation in degraded Imperata cylindrica grassland: understorey development in forest plantations
Article first published online: 24 FEB 2009
1995 IAVS - the International Association of Vegetation Science
Journal of Vegetation Science
Volume 6, Issue 2, pages 205–210, April 1995
How to Cite
Kuusipalo, J., Ådjers, G., Jafarsidik, Y., Otsamo, A., Tuomela, K. and Vuokko, R. (1995), Restoration of natural vegetation in degraded Imperata cylindrica grassland: understorey development in forest plantations. Journal of Vegetation Science, 6: 205–210. doi: 10.2307/3236215
- Issue published online: 24 FEB 2009
- Article first published online: 24 FEB 2009
- Received 1 July 1994; Revision received 3 November 1994; Accepted 14 November 1994.
- Acacia mangium;
- Natural regeneration;
- Restoration ecology;
- Forest management
Abstract. Reclamation of former, degraded forest lands occupied by Imperata cylindrica is one of the crucial environmental and forestry issues in the humid tropics, notably Southeast Asia. We suggest that it is possible to gradually restore the original natural forest cover with the help of a sacrifice fallow crop of fast-growing exotic tree species. Recently, a set of suitable fast-growing plantation tree species has been identified and stand establishment methods developed for this purpose. We assessed the regeneration of natural vegetation in stands of different plantation tree species and evaluated the ecological impact of species composition in the plantation understorey. PCA ordination, regression analysis and analysis of covariance were applied at different stages of the study. We found a marked vegetational resemblance between stands dominated by Acacia mangium: they had the highest number of indigenous trees in their understorey, whereas stands of other plantation trees supported more diverse grass and herb vegetation. A high proportion of evergreen woody vegetation reduces the risk of fire and grass competition and enhances secondary succession towards natural forest.