2012, 25(6): 789-794.
The survey was conducted on the growth of 10-year-old Manglietia glauc and their soil condition in different slope position from three sites: the original place Bào Yên of Lào Cai, Vietnam and the introduction places Baiyun and Shaoping in Pingxiang, Guangxi, China. It was found that the growth of M.glauc on different sites showed down slope>middle slope>upper slope. Comparing the down/upper slope with upper slope in different sites, the DBH, tree height and volume growth rose by 30.35%, 49.00%; 34.78%, 56.03%; 122.97%, 236.15% in Baiyun, 30.07%, 53.44%; 39.00%, 54.54%; 125.09%, 245.76% in Shaoping, and 19.75%, 35.08%; 11.08%, 27.49%; 56.58%, 119.21% in Bào Yên, respectively. Baiyun and Shaoping located in south subtropical zone, had higher effect on the growth of M. glauc than that in its original place Bào Yên located in north tropical zone. The effect of soil condition on M. glauc stands showed the same regularity. This implied that M. glauc is a soil sensitive species. Result of variance analysis showed that slope position on the growth of M. glauc reached a highly significant difference(PM. glauc was alike in the same climatic zones, but differed in the different climatic zones, the growth in the south subtropical zone was higher than that in the north tropical zone, the order of the growth linear gradient was the same as the trend of the effect on slope in different climatic zones. It is showed that the degree of effect on slope in M. glauc growth varied under different habitat condition.
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