학술논문
闽北山地马尾松林间伐套种改造提升成效分析 / Analysis on the Improvement Effect of Intermediate Cutting and Intercropping Transformation of Pinus massoniana Plantation in the Mountainous Areas of Northern Fujian
Document Type
Academic Journal
Source
防护林科技 / Protection Forest Science and Technology. (1):38-41
Subject
Language
Chinese
ISSN
1005-5215
Abstract
为探明不同间伐套种方式对马尾松人工林栽培效果的影响,以闽北山地带状间伐和择伐的马尾松林为对象,研究了 2种改造方式对套种红锥(Castano psis hystrix)、火力楠(Michelia macclurei)和南酸枣(Choerospondias axillaris)的生长、林下植被保育和马尾松单株生物量的影响.结果表明:(1)在不同立地上3个套种树种的保存率均较高,说明这3个树种均可以作为培育马尾松复层异龄林的优良材料,经过相同时间的培育,南酸枣的胸径和树高均最高,说明南酸枣可能具有更强的生态适应性.(2)择伐有助于提高马尾松林下物种组成和丰富度,其Gl-eason 指数和Margalef指数分别为2.33和2.13,比对照保留带分别高出73.8％和55.47％,可有效提高林分的复杂程度和抗逆性.(3)择伐后马尾松的胸径和树高生长量得到显著提高,单株生物量和碳储量高于对照55.92％.
To explore the impact of different thinning and intercropping methods on the cultivation effect of Pinus massoniana plantation and taking Pinus massoniana plantations of strip thinning and selective cutting in the moun-tainous area of northern Fujian as the objects,the effects of two transformation methods on the growth of inter-cropped Castanopsis hystrix,Michelia macclurei,and Choerospondias axilaris,understory vegetation conservation,and single plant biomass of Pinus massoniana were studied.The results showed as the following three aspects.(1)The preservation rates of the three intercropped tree species were all high on different sites,indicating that these three tree species could be used as excellent materials for cultivating laminated uneven-aged forests.After the same time of cultivation,the DBH and tree height of Choerospondias axilaris reached the highest,indicating that Cho-erospondias axilaris could have stronger ecological adaptability.(2)Selective thinning could help improve the com-position and richness of understory species of Pinus massoniana,with Gleason index and Margalef index reaching 2.33 and 2.13,respectively,which were 73.8％and 55.47％higher than the control.It could effectively improve the complexity of the forest stand and enhance its stress resistance.(3)After selective thinning,the DBH and height growth of Pinus massoniana were significantly improved,with individual biomass and carbon storage being 55.92％higher than the control.
To explore the impact of different thinning and intercropping methods on the cultivation effect of Pinus massoniana plantation and taking Pinus massoniana plantations of strip thinning and selective cutting in the moun-tainous area of northern Fujian as the objects,the effects of two transformation methods on the growth of inter-cropped Castanopsis hystrix,Michelia macclurei,and Choerospondias axilaris,understory vegetation conservation,and single plant biomass of Pinus massoniana were studied.The results showed as the following three aspects.(1)The preservation rates of the three intercropped tree species were all high on different sites,indicating that these three tree species could be used as excellent materials for cultivating laminated uneven-aged forests.After the same time of cultivation,the DBH and tree height of Choerospondias axilaris reached the highest,indicating that Cho-erospondias axilaris could have stronger ecological adaptability.(2)Selective thinning could help improve the com-position and richness of understory species of Pinus massoniana,with Gleason index and Margalef index reaching 2.33 and 2.13,respectively,which were 73.8％and 55.47％higher than the control.It could effectively improve the complexity of the forest stand and enhance its stress resistance.(3)After selective thinning,the DBH and height growth of Pinus massoniana were significantly improved,with individual biomass and carbon storage being 55.92％higher than the control.