There were some published reports of study on secondary succession and natural regeneration at Me Linh station for biodiversity and surrounding areas belonging to Tam Dao National Park. The data showed that the succession of forestry rehabilitation in the area is low because the quality of sapling is not good and the seed sources for natural regeneration is not enough. In this paper the authors presented some results of study on the composition and distributive law of sapling in secondary vegetations at Me Linh station for biodiversity and surrounding areas. Results of survey recorded 33 plant species regenerating in secondary vegetations. There are 7 species reaching the rate of composition over 5%. They are Canarium album, Canarium parvum (14.48%), Cratoxylum cochinchinese (11.74%), Engelhartia roxburghiana (10.38%), Toxicodendron succedanea (9.28%), Phoebe sp. (8.74%), and Litsea umbellata (5.19%). There are differences in composition of saplings and woody trees in secondary forest plots. The distribution of sapling number per height level in secondary forest is reducing form and can use Mayer’s function to model this distribution from height level I to VII. The distribution of sapling on the ground is of crowded shape.
Ma Thi Mai Ngoc
College of Pedagogy, Thai Nguyen University
Le Dong Tan
IEBR - VAST
(Proceedings of 3rd National Scientific Conference on Ecology and Biological Resources, Hanoi 22th October 2009 - IEBR)