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在福建省南平峡阳国有林场开展 5种不同立地管理措施对 1片 2 9a生第 1代杉木人工林采伐后营造的 4a生第 2代杉木人工林生产力影响的研究。研究结果表明 ,5种处理的第 2代杉木林地位指数与第 1代相比均略有下降。BL3BM0 (收获树干和树皮、加倍采伐剩余物 )处理的 4a生 2代杉木林生长最好 ,地位指数仅比 1代下降 0 6 7;其次为BL0 BM0 (收获地上所有有机质 )处理 ,地位指数比 1代下降 0 85 ;BL1 BM0 (清走树木的所有部分 )处理杉木生长最差 ,地位指数下降 1 6 7。炼山处理 (BL2 BM1 )与保留相同数量采伐剩余物而不炼山的处理 (BL2 BM0 )相比 ,杉木生长没有显著差异。
Study on the Effect of Five Site Management Measures on the Productivity of the 2nd Generation Chinese Cunninghamia lanceolata Plantation Reared by the First Generation Chinese Fir Plantation after Cutting in a 29 - year - old Chinese Fir Plantation. The results showed that the status index of the second generation of Chinese fir in five treatments decreased slightly compared with the first generation. The growth of the second-generation Chinese fir on the 3rd and 4th generations in BL3BM0 (the harvested trunk and bark, the double-harvested residue) was the best, with the status index decreasing only by 0.667 times that of the first generation, followed by BL0 BM0 (all organic matter harvested) A decrease of 0 85 over the first generation; BL1 BM0 (all parts of the tree cleared away) had the worst growth and decreased the status index by 16.7%. There was no significant difference in fir growth between the BL2 BM1 treatment and the BL2 BM0 treatment with the same amount of harvesting leftovers and no smelting.