[1]张培,庞圣江,杨保国,等. 广西西南地区巨尾桉与红椎混交造林试验研究[J].西北林学院学报,2021,36(1):150-155.[doi:10.3969/j.issn.1001-7461.2021.01.21]
 ZHANG Pei,PANG Sheng-jiang,YANG Bao-guo,et al. Mixed Afforestation Experiment of Eucalyptus grandis×E.urophylla and Castanopsis hystrix in the Southwest Region of Guangxi[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2021,36(1):150-155.[doi:10.3969/j.issn.1001-7461.2021.01.21]
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 广西西南地区巨尾桉与红椎混交造林试验研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第36卷
期数:
2021年第1期
页码:
150-155
栏目:
出版日期:
2021-01-31

文章信息/Info

Title:
 Mixed Afforestation Experiment of Eucalyptus grandis×E.urophylla and Castanopsis hystrix in the Southwest Region of Guangxi
文章编号:
1001-7461(2021)01-0150-06
作者:
 张培1庞圣江1杨保国1刘士玲1贾宏炎12*段润梅1陈健波3郭东强3
 (1.中国林业科学研究院 热带林业实验中心,广西 凭祥 532600;2.广西友谊关森林生态系统国家定位观测研究站,广西 凭祥 532600;3.广西林业科学研究院,广西 南宁 530001)
Author(s):
 ZHANG Pei1PANG Sheng-jiang1YANG Bao-guo1LIU Shi-ling1JIA Hong-yan12*DUAN Run-mei1CHEN Jian-bo3GUO Dong-qiang3
 (1.Experimental Center of Tropical Forestry,Chinese Academy of Forestry,Pingxiang 532600,Guangxi,China;2.Guangxi Youyiguan Forest Ecosystem Research Station,Pingxiang 532600,Guangxi,China; 3.Guangxi Forestry Science Research Institute,Nanning 530001,Guangxi,China)
关键词:
 巨尾桉红椎混交造林森林经营
Keywords:
Eucalyptus grandis×E.urophylla Castanopsis hystrix mixed afforestation forest management
分类号:
S725.2
DOI:
10.3969/j.issn.1001-7461.2021.01.21
文献标志码:
A
摘要:
 选取10年生巨尾桉纯林(1 650株·hm-2)与按2∶1行状混交的巨尾桉×红椎林(巨尾桉1 100株·hm-2∶红椎550株·hm-2)为对象,采取典型的样地方法,对2种林分生长、土壤养分含量及其林分稳定性进行调查研究,探寻巨尾桉适宜的混交模式,以促进桉树人工林可持续经营。结果表明:1)巨尾桉×红椎混交林中巨尾桉胸径、枝下高、冠幅和单株材积生长均显著高于巨尾桉纯林(P<0.05),但树高生长差异性不显著。2)巨尾桉×红椎混交林的林分总蓄积量为126.44 m3·hm-2,比较接近巨尾桉纯林(129.84 m3·hm-2)。3)混交林上层土壤速效N、速效P和速效K含量分别比巨尾桉纯林增加16.31、0.43 mg·kg-1和16.65 mg·kg-1。4) 10年生时,混交林的种间关系协调,红椎生长尚未受到巨尾桉较大影响,但混交林中巨尾桉、红椎的胸径小于其各自平均胸径的立木比例分别占57.88%和52.42%,林分结构存在不稳定的趋势。因此,建议适时开展抚育间伐,改善林分结构和调整种间关系,以期充分发挥混交效益。
Abstract:
 Taking the 10-year-old pure Eucalyptus grandis×E.urophylla plantation with the planting density of 1 650 trees·hm-2 and row mixed plantation of E.grandis×E.urophylla (1 100 trees·hm-2) and Castanopsis hystrix (550 trees·hm-2) with a proportion of 2∶1 as the research objects in the southwest region of Guangxi to conduct mixed afforestation experiment.The method of typical sample plot survey was adopted to examine the growth,soil nutrient contents and the stability of stand structure of the mixed and pure plantations.The objectives of the study were to explore suitable planting pattern for E.grandis×E.urophylla,and to promote sustainable management for Eucalyptus plantations.The results showed that 1) the diameter at breast height (DBH),height under branch,crown diameter and individual tree volume growth in mixed plantation were significantly higher than those in pure plantation (P<0.05),but the height growth was not significant different (P>0.05).2) The total stand volume of mixed plantation was 126.44 m3·hm-2,close to pure plantation (129.84 m3·hm-2).3) The contents of available N,P and K in upper soil layer of mixed plantation were 16.31,0.43,and 16.65 mg·kg-1,higher than pure plantation.4) The interspecific relationship of 10-year-old mixed forest was harmonious,and the growth of C.hystrix was not greatly affected by E.grandis×E.urophylla.However,the proportion of Eucalyptus and C.hystrix with the diameters less than their average DBH accounted for 54.5% and 49.2%,respectively,indicating the stand structure tended to be unstable.Therefore,it was suggested to carry out intermediate cutting at an appropriate time,to improve the stand structure,to adjust the relationship between species,and to fully realize the mixed benefits.

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备注/Memo

备注/Memo:
 收稿日期:2020-02-17修回日期:2020-08-19
基金项目:广西创新驱动发展专项:桉树用材林质量精准提升关键技术研究与示范(桂科AA17204087-6)。
作者简介:张培,工程师。研究方向:林木良种选育与培育。E-mail:zhangpei08@126.com
*通信作者:贾宏炎,高级工程师。研究方向:森林培育与生态。E-mail:rlzxjhy@163.com
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