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在沿海山地,于桉树造林地四周种植抗风性强的桉树种作为防风林带试验,探讨台风侵袭下,防风林带内尾巨桉的抗风性,结果表明:防风林带内造林28个月的桉树林风害率为41.6%,而无保护行的林分风害率则达64.1%;风害后对风害木及时清理,经1a的恢复生长,即40个月生的林分总存活率,无保护行的为51.9%,而有保护行的林分存活率高达68.6%,相差近20%。说明有保护行的林分风害程度比无保护行的林分轻,且恢复生长比无保护行的林分有明显优势。在福建沿海地区的桉树造林,由于台风侵袭次数多,可在造林地四周选用生长速度相对较慢但耐风力强的赤桉作为保护行,其内种植高产的尾巨桉、巨桉等品系,以调整林分结构,减轻台风对桉树纯林的风害损失,提高林分的抗风性和林木产量是可行的。
In the coastal mountainous area, we planted wind-resistant eucalyptus species around the eucalypt plantations as windbreaks to study the wind resistance of Eucalyptus urophylla in the windbreak belt under the typhoon. The results showed that the Eucalyptus forests The wind damage rate was 41.6%, while that of unprotected forest reached 64.1%. Wind damage was promptly cleared after wind damage. After lasted for 1 year, the total survival rate of 40-month-old stands, 51.9% for unprotected lines, and 68.5% for those with protected lines, a difference of nearly 20%. The results showed that the degree of wind damage of the forest with protected line was lighter than that of the unprotected line, and the recovery of growth had obvious advantage over that of the unprotected line. Eucalyptus afforestation in the coastal areas of Fujian Province, due to the large number of typhoon invaders, can be used as protection line in relatively slow-growing but wind-resistant Eucalyptus grandis in the afforestation area, It is feasible to adjust the stand structure, reduce wind damage to typhoon Eucalyptus plantation, and improve the wind resistance and forest yield of stand.