Verification of the Impact of Chinese Fir Provenances on Basal Area Growth Models

The impact of Chinese fir (Cunninghamia lanceolata) provenances planted in the same region on their basal area growth models was verified by the method of random effects test with the data from eight forest farms, Jigongshan, Hongya, Dagangshan, Liuzhou, Liufengshan, Gongxianluobiao, Gongxianminsheng and Qionglai. Results show that parameters of basal area growth models among Chinese fir provenances planted in the same region are of no significant difference.