[Geographical variation of growth traits among different provenances].

The variations in plant growth of 32 provenances in three sites (Yongfeng, Jiangxi; Kaihua, Zhejiang and Chuzhou, Anhui) were studied. The AMMI model was used to analyze the stability of growth traits and to select the best provenances. The results showed that tree height, diameter at breast (ground) height, and aboveground biomass (AGB) per individual of the provenances were significantly different in the three sites. The AGB per individual was significantly affected by site, provenance, and the interaction of provenance × site. Site had the greatest impact on the variation of tree growth, followed by provenance and provenance × site. The growth performance of these superior provenances in different sites varied greatly in the seedling stage (1-3 years old) and young forest stage (4-11 years old). Based on the AGB per individual in the 11st year, the best provenances were selected in each site. Seven superior provenances of Yongfeng, Jiangxi were selected, with the average AGB per individual increased by 15.6%-57.8% compared with the ave-rage value. Seven superior provenances of Kaihua, Zhejiang were selected, with the average AGB per individual increased by 19.2%-45.2%. Eight superior provenances of Chuzhou, Anhui were selected,with the average AGB per individual increased by 24.9%-63.3%. According to the growth performance and stability, four superior provenances were selected to develop short-rotation charcoal forest cultivation across three sites, with an average AGB per individual of 36.55 kg and an average stability parameter of 0.97.