| 卢中强,肖翔升,王家妍,李 刚,杨 梅,蒙好生.不同混交树种对红锥生长特性和林木竞争的影响[J].林业调查规划,2025,50(4):37-42 |
| 不同混交树种对红锥生长特性和林木竞争的影响 |
| Effects of Different Mixed Tree Species on the Growth Characteristicsand Intraspecific Competition of Castanopsis hystrix |
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| DOI： |
| 中文关键词: 红锥 混交 生长特性 竞争指数 |
| 英文关键词: Castanopsis hystrix mixed planting growth characteristics competition index |
| 基金项目:广西自筹经费林业科技项目(桂林科研[2022ZC]第30 号). |
| 作者 | 单位 | | 卢中强 | 广西国有高峰林场,广西 南宁 530000 | | 肖翔升 | 广西大学 林学院,广西高校亚热带人工林培育与利用重点实验室,
中南速生材繁育国家林业和草原局重点实验室,广西 南宁 530004 | | 王家妍 | 广西国有高峰林场,广西 南宁 530000 | | 李 刚 | 广西国有高峰林场,广西 南宁 530000 | | 杨 梅 | 广西大学 林学院,广西高校亚热带人工林培育与利用重点实验室,
中南速生材繁育国家林业和草原局重点实验室,广西 南宁 530004 | | 蒙好生 | 广西国有高峰林场,广西 南宁 530000 |
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| 中文摘要: |
| 为促进红锥优质大径材培育,在广西高峰森林公园内21 a生红锥纯林、红锥×厚荚相思混交
林、红锥×米老排混交林和红锥×马尾松混交林中设标准地并进行每木检尺,再以Hegyi竞争模型计
算红锥种内、种间和总竞争指数,探究红锥生长指标与竞争指数间的相关性。结果表明,混交林中
红锥生长被混交树种抑制,其胸径、胸高断面积、材积均小于红锥纯林,同时纯林中红锥树冠率较
小、冠幅较大;而红锥胸径、胸高断面积、材积和冠幅与竞争指数间均呈显著正相关关系,树冠率与
种内竞争指数间呈显著负相关关系。红锥纯林模式中红锥生长特性最优,而在营建红锥混交林时
应确保红锥在冠层中处于优势地位并保持适度的种内竞争,以促进红锥优良形质的形成。 |
| 英文摘要: |
| To promote the cultivation of high-quality large-diameter timber of Castanopsis hystrix, sample
plots were established in a 21-year-old pure Castanopsis hystrix forest, the mixed forest of Castanopsis
hystrix×Acacia crassicarpa, the mixed forest of Castanopsis hystrix×Mytilaria laosensis and the mixed forest
of Castanopsis hystrix×Pinus massoniana in Guangxi Gaofeng Forest Park. Tree measurements were conducted,
and the Hegyi competition model was used to calculate the intraspecific, interspecific, and total competition indices of Castanopsis hystrix. The correlation between growth indicators and competition indices
was explored. The results showed that the growth of Castanopsis hystrix in mixed forests was inhibited
by the mixed tree species, with its diameter at breast height, basal area, and volume being smaller
than those in the pure forest. Additionally, the crown ratio of Castanopsis hystrix in the pure forest was
smaller, while the crown width was larger. Significant positive correlations were found between the diameter
at breast height, basal area, volume, crown width, and competition indices, whereas the crown ratio
showed a significant negative correlation with the intraspecific competition index. The pure Castanopsis hystrix forest exhibited optimal growth characteristics. When establishing mixed forests with Castanopsis hystrix, it is essential to ensure its dominance in the canopy and maintain moderate intraspecific competition
to promote the formation of superior morphological traits. |
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