巨桉乳源木莲复合林经营模式研究

Research on management model of composite forest of Eucalyptus grandis and Manglietia yuyuanensis Law

研究桉树7年生林经间伐后,在桉树林下套种乳源木莲的经营方式,结果表明:桉树林经间伐套种乳源木莲(JR)处理比同样间伐但不套种(JA)处理和不间伐不套种(CK)处理的桉树胸径生长量分别提高了7.46%和71.84%,树高生长量分别提高了5.32%和81.45%,单株立木材积分别提高了9.10%和150.87%;在桉树林下套种的乳源木莲(5年生)平均树高、平均胸径分别达到5.8 m和5.4 cm,与同年度相似立地条件下的乳源木莲纯林和乳源木莲、杉木乳源木莲混交林两个处理相比,平均树高分别增加了41.46%和9.43%;平均胸径比乳源木莲纯林提高了54.29%,但比混交林降低了5.27%。说明在桉树林下套种乳源木莲经营方式可行,能够形成异龄复层林分,有利于培育桉树大径材。

After intermediate cutting in 7-years-old woods of Eucalyptus grandis,the management model of interplanting Manglietia yuyuanensis Law under woods of Eucalyptus grandis was studied.The result showed that the growth of DBH,height volum growth and single tree volume of Eucalyptus grandis in the treatment of interplanting Manglietia yuyuanensis Law（JR） increased by 7.46% and 71.84%,5.32% and 81.45%,9.10% and 150.87% respectively to compare with the treatments of interplanting Manglietia yuyuanensis Law（JA） and without cutting and interplanting（CK）.The average height and DBH of Manglietia yuyuanensis Law in JR treatment reached 5.8 m and 5.4 cm respectively.They increased by 41.46% and 9.43%,increased by 54.29% and decreased by 5.27% respectively to compare with the treatments of monoplanting Manglietia yuyuanensis Law and interplanting Chinese Fir and Manglietia yuyuanensis Law（3∶1）.It means that the management model of interplanting Manglietia yuyuanensis Law under woods of Eucalyptus grandis is available.it can form a different-aged multi-storied stand.