杉木樟树混交造林生长效果调查研究

林洪义

(福建省仙游县大济镇林业站,福建 仙游 351265)

杉木樟树混交造林生长效果调查研究

林洪义

(福建省仙游县大济镇林业站,福建 仙游 351265)

摘要：在虎头山马尾松采伐迹地,进行了营造杉木樟树混交林、纯林试验,经过11年的经营管理,其林木生长良好。结果显示:杉木樟树混交林的林木生长量,比纯林的林木生长量显著良好,树高平均分别大3.56%、7.25%,胸径平均分别粗14.47%、15.26%,树冠平均分别大21.28%、77.78%,郁闭度平均分别大3.26%、2.15%,单株材积平均分别大31.58%、38.89%,每公顷蓄积量平均分别多22.14%、41.89%。杉木樟树混交林的土壤肥力养分N、P、K,分别比杉木、樟树纯林的土壤肥力也明显提高。

关键词：杉木;樟树;混交造林;生长效果;调查

收稿日期：2015-07-28

作者简介：林洪义(1974—)，男,福建仙游人,工程师,主要从事森林培育技术工作。

中图分类号：S79

文献标识码：B

文章编号：编号：1674-9944(2015)09-0047-04

Abstract:In pinus massoniana cutover land on Tiger Mountain,the article conducts an experiment that a mixed forest and pure forest of Chinese fir and camphor tree are tested.After 11 years of operation and management,the forests grow well.The results show that the forest increment of mixed forest of Chinese fir and camphor tree is obviously larger than that of pure forest.The average tree height of mixed forest is taller than pure forest of Chinese fir and pinus massoniana by 3.56% and 7.25% respectively;the average DBH is coarser by 14.47% and 15.26% respectively;the average crown is larger by 21.28% and 77.78% respectively;the canopy density is larger by 3.26% and 2.15% respectively;the individual volume is larger by 31.58% and 38.89% respectively;the average per hectare volume is larger by 22.14% and 41.89% respectively.The soil fertility nutrient N,P,K of mixed forest is clearly higher than that of pure forest.

1引言

杉木(Cunninghamialanceolate)是福建省主要的用材林树种,也是仙游县主要的乡土树种。其树生长快,产量高,材质优良,用途广泛,经济价值高。为了提高杉木的生长速度,改善林地土壤肥力,改变林木生长环境,提高林木生长效果,充分发挥林种多样性,将马尾松采伐迹地营造杉木樟树针阔叶树混交林、纯林试验。樟树(Cinnamomumcamphora(L.) Presl)属常绿大乔木,树干通直,高达50 m,胸径3 m以上,深根性,主根发达,萌芽力强,对土壤条件要求不严格,均能在黄壤山地生长。樟树树冠广展,枝叶茂密,气势雄伟,枯枝落叶物多,待其腐烂后,能增加林地地表层土壤肥力。与杉木混交,能改善土壤性质,促进林木生长,提高林分生长量,提升林地生产力。……