幼龄南方红豆杉人工林树冠形态特征与生长形质通径分析

doi:10.3969/j.issn.1000-2006.201805011

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南京林业大学学报（自然科学版） ›› 2019, Vol. 62 ›› Issue (04): 185-191.doi: 10.3969/j.issn.1000-2006.201805011

幼龄南方红豆杉人工林树冠形态特征与生长形质通径分析

欧建德¹,吴志庄²

(1.明溪县林业局,福建三明 365200; 2.国家林业局竹子研究开发中心, 浙江杭州 310012)

出版日期:2019-07-22 发布日期:2019-07-22
基金资助:
收稿日期:2018-05-11 修回日期:2018-12-24 基金项目:中央财政林业科技推广示范资金项目(闽[2015]TG05号); 三明双创城市示范项目((2017)2号)。第一作者:欧建德(smmxojd@163.com),教授级高级工程师,ORCID(0000-0001-5023-1809)。

Path analysis between canopymorphological characteristics and growth form quality of Taxus chinensis var. mairei plantation at young age

OU Jiande¹, WU Zhizhuang²

(1.Mingxi Forestry Bureau, Sanming 365200, China; 2.China National Bamboo Research Center, Hangzhou 310012, China)

Online:2019-07-22 Published:2019-07-22

摘要/Abstract

摘要： 【目的】了解南方红豆杉人工林分树冠形态特征对生长形质的影响程度,明确南方红豆杉树冠形态调控重点与方向。【方法】运用通径分析方法,分析了福建省明溪县15年生南方红豆杉人工林中冠幅、冠形率和树冠率与单株材积、胸径、无节材长度、尖削度以及生长形质综合评价值等5个因子之间的关系; 利用多目标决策方法进行生长形质综合表现评价。【结果】15年生南方红豆杉冠幅、冠形率对单株材积具有极显著的正向作用,但树冠率对单株材积具有极显著的负向作用; 冠幅、冠形率对胸径有极显著的正向作用,但树冠率对胸径有极显著的负向作用; 冠幅、冠形率对无节材长度具有极显著的正向作用,但树冠率对无节材长度具有极显著的负向作用; 冠形率对树干尖削度有极显著负向作用,树冠率对树干尖削度有极显著正向作用,冠幅对树干尖削度有弱度负向作用。树冠特征因子间对南方红豆杉生长形质性状影响作用与重要性排序不尽相同。冠幅、冠形率对生长形质综合表现具有极显著的正向作用,但树冠率对生长形质综合表现具有极显著的负向作用。综合来看,影响因子相对重要性由大到小依次为树冠率、冠形率、冠幅。【结论】速生丰产优质干材南方红豆杉的理想树冠形态是:有着较小树冠率,狭长的冠形,以及在较小树冠率和狭长冠形前提下较大冠幅的树冠形态结构。树冠形态调控的重点与方向是降低树冠率。

Abstract: 【Objective】 We evaluated the impact degree between canopy morphological characteristics and growth and form quality of Taxus chinensis var. mairei, and clarified the key points and directions of morphological regulation. 【Method】 The growth and form quality comprehensive performance were evaluated by the multi-objective decision-making method and by determining the relationship between crown width, crown shape rate, crown rate, and five index factors: i.e., individual volume, diameter at breast height(DBH), length of non-knot timber, taperingness, comprehensive evaluation value of growth, and form quality. Fifteen-year-old T. chinensis var. mairei plantation in Mingxi County, Fujian Province as analyzed by path analysis. 【Result】 The results showed that crown width and crown shape rate had a significant positive effect on the individual volume, whereas the crown rate had a significant negative effect on the individual volume. Crown width and crown shape rate had a significant positive effect on DBH, while crown rate had a significant negative effect on DBH. Crown width and crown shape rate had a significant positive effect on the length of non-knot timber, while crown rate had a significant negative effect on the length of non-knot timber. The crown shape rate had a significant negative effect on taperingness, while the crown rate had a significant positive effect on taperingness and crown width had a weak negative effect on taperingness. The influence and order of the relative importance of canopy characteristics on the growth and form quality indicators of T. chinensis var. mairei showed some differences. Crown width and crown shape rate had a significant positive effect on the growth and form quality comprehensive performance, while crown rate had a significant negative effect on growth and form quality comprehensive performance. The relative importance of factors were as follows: crown rate, crown shape rate, crown width. 【Conclusion】 Therefore, the ideal crown morphological structure for cultivation of fast-growing, high-yield and high-quality timber of T. chinensis var. mairei is relatively small crown rate, followed by a long and narrow crown, and a larger crown width under the precondition of a small crown rate and long and narrow crown. The key point and direction of crown morphological regulation of T. chinensis var. mairei is a reduction in the crown rate.

中图分类号:

S758

欧建德,吴志庄. 幼龄南方红豆杉人工林树冠形态特征与生长形质通径分析[J]. 南京林业大学学报（自然科学版）, 2019, 62(04): 185-191.

OU Jiande, WU Zhizhuang. Path analysis between canopymorphological characteristics and growth form quality of Taxus chinensis var. mairei plantation at young age[J].Journal of Nanjing Forestry University (Natural Science Edition), 2019, 62(04): 185-191.DOI: 10.3969/j.issn.1000-2006.201805011.

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幼龄南方红豆杉人工林树冠形态特征与生长形质通径分析

Path analysis between canopymorphological characteristics and growth form quality of Taxus chinensis var. mairei plantation at young age

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