乳源木莲毛竹混交林生长及土壤肥力研究  

Study on Soil Fertility and Growth Status of Manglietia yuyuanensis Plantation Mixed with Phyllostachys pubescens

作　　者：康永武 

机构地区：[1]沙县林业科技推广中心,福建沙县365500

出　　处：《西南林业大学学报（自然科学）》2014年第1期14-20,共7页Journal of Southwest Forestry University：Natural Sciences

基　　金：福建省公益类科研院所基本科研专项(2011R1013-2)资助

摘　　要：对杉木乳源木莲混交林砍伐杉木后形成的乳源木莲毛竹新林型的生长及土壤肥力状况进行研究,结果表明:乳源木莲毛竹枝叶分布层次明显,乳源木莲位于林分上层,林分结构合理,物种多样性较高;乳源木莲在2002—2012年的10年间能够保持较高生长量,有利于培育乳源木莲大径材;3种混交处理中,2002—2012年不同密度乳源木莲平均胸径、平均树高及单株立木材积生长量虽有差异,但差异较小;不同处理毛竹高径生长、产笋量和总产材量均存在差异,以RD处理、RC处理为好。乳源木莲毛竹混交林是拟自然更新的林型,能够改善林地土壤肥力,具有省工、适用、高效的经营特点,适宜在中亚热带林区高丘低山区域推广应用。The study was carried out on soil fertility and the growth status of the transformed Manglietia yuyuanensis plantation mixed with PhyUostachys pttbescens after the Cunninghamia lanceolata trees were selectively cut off which used to be mixed with the Manglietia yuyuanensis. The results indicated that the branch and foliage distribution of Manglietia yuyuanensis was obviously stratified, the Manglietia yuyuanensis tree species occupied the upper layer in the stand, indicating a reasonable stand structure and a higher species diversity. The growth rate of Manglietia yuyuanensis was high in the following 10 years, which could be cultivated for large-sized timber. There were no significant differences in the average DBH, average tree height, and the average individual standing volume of Manglietia yuyuanensis in the following 10 years among three types of mixing treatments. However, there were significant differences in the average DBH, average tree height, average yield of bamboo shoot, and the average in- dividual standing volume of Phyllostachys pubescens, and the results showed that RD and RC mixing type were bet- ter than the other in the subsequent decade. The mixed plantation of Manglietia yuyuanensis and Phyllostachys pu- bescens turned to be a close-to-nature forest type, which was labor saving, more adaptable to the mountainous site conditions, high efficient and able to promote the soil fertility. It was proposed to be extended and applied in hilly and mountainous areas in the central Asian tropical forest zone.

关 键 词：乳源木莲 毛竹 混交 生长状况 土壤肥力 

分 类 号：S725.2[农业科学—林木遗传育种]