北美鹅掌楸人工林生长规律及早期选择可行性探究
[目的]北美鹅掌楸为优良的珍贵用材树种，研究其生长发育规律及生长性状早晚期相关对于北美鹅掌楸人工林高效培育有重要的指导意义。[方法]本文利用树干解析的方法对江苏句容24年生的北美鹅掌楸人工林生长规律研究，并在此基础上进行胸径、树高和材积性状的年年相关分析以及早期选择效率评价。[结果]研究结果表明：北美鹅掌楸胸径、树高从6a进入快速生长期，持续到17a，而材积则在1～10a增长缓慢，12a后进入速生期，生长速率在20a达到最大，22a后逐渐降低，林分接近数量成熟。生长性状的年年相关及早期选择效率分析结果表明：胸径、树高在6a与18a显著相关，材积在6a与16a达到显著相关，且此时选择效率最高；若...
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| Published in | 林业科学研究 Vol. 30; no. 5; pp. 878 - 885 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
南京林业大学南方现代林业协同创新中心,江苏南京,210037%南京林业大学下蜀实习林场,江苏句容,212400
2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-1498 |
| DOI | 10.13275/j.cnki.lykxyj.2017.05.023 |
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| Abstract | [目的]北美鹅掌楸为优良的珍贵用材树种，研究其生长发育规律及生长性状早晚期相关对于北美鹅掌楸人工林高效培育有重要的指导意义。[方法]本文利用树干解析的方法对江苏句容24年生的北美鹅掌楸人工林生长规律研究，并在此基础上进行胸径、树高和材积性状的年年相关分析以及早期选择效率评价。[结果]研究结果表明：北美鹅掌楸胸径、树高从6a进入快速生长期，持续到17a，而材积则在1～10a增长缓慢，12a后进入速生期，生长速率在20a达到最大，22a后逐渐降低，林分接近数量成熟。生长性状的年年相关及早期选择效率分析结果表明：胸径、树高在6a与18a显著相关，材积在6a与16a达到显著相关，且此时选择效率最高；若以24a为伐期年龄早晚相关分析，胸径、材积在16a与24a生长量达到显著相关水平，而树高则为14a。[结论]北美鹅掌楸胸径、树高早期增速较快，进入中壮龄阶段竞争加剧，个体间分化增大。随着林分年龄的增长，研究获得的早期选择年龄也相应地延迟。从加速育种角度，在6a进行早期选择较为合理，而在培育大径材北美鹅掌楸方面可以16a之后再进行疏伐选择。 |
|---|---|
| AbstractList | [目的]北美鹅掌楸为优良的珍贵用材树种，研究其生长发育规律及生长性状早晚期相关对于北美鹅掌楸人工林高效培育有重要的指导意义。[方法]本文利用树干解析的方法对江苏句容24年生的北美鹅掌楸人工林生长规律研究，并在此基础上进行胸径、树高和材积性状的年年相关分析以及早期选择效率评价。[结果]研究结果表明：北美鹅掌楸胸径、树高从6a进入快速生长期，持续到17a，而材积则在1～10a增长缓慢，12a后进入速生期，生长速率在20a达到最大，22a后逐渐降低，林分接近数量成熟。生长性状的年年相关及早期选择效率分析结果表明：胸径、树高在6a与18a显著相关，材积在6a与16a达到显著相关，且此时选择效率最高；若以24a为伐期年龄早晚相关分析，胸径、材积在16a与24a生长量达到显著相关水平，而树高则为14a。[结论]北美鹅掌楸胸径、树高早期增速较快，进入中壮龄阶段竞争加剧，个体间分化增大。随着林分年龄的增长，研究获得的早期选择年龄也相应地延迟。从加速育种角度，在6a进行早期选择较为合理，而在培育大径材北美鹅掌楸方面可以16a之后再进行疏伐选择。 S792.21; [目的]北美鹅掌楸为优良的珍贵用材树种,研究其生长发育规律及生长性状早晚期相关对于北美鹅掌楸人工林高效培育有重要的指导意义.[方法]本文利用树干解析的方法对江苏句容24年生的北美鹅掌楸人工林生长规律研究,并在此基础上进行胸径、树高和材积性状的年年相关分析以及早期选择效率评价.[结果]研究结果表明:北美鹅掌楸胸径、树高从6 a进入快速生长期,持续到17 a,而材积则在1～10a增长缓慢,12 a后进入速生期,生长速率在20 a达到最大,22 a后逐渐降低,林分接近数量成熟.生长性状的年年相关及早期选择效率分析结果表明:胸径、树高在6a与18 a显著相关,材积在6a与16a达到显著相关,且此时选择效率最高;若以24 a为伐期年龄早晚相关分析,胸径、材积在16 a与24 a生长量达到显著相关水平,而树高则为14 a.[结论]北美鹅掌楸胸径、树高早期增速较快,进入中壮龄阶段竞争加剧,个体间分化增大.随着林分年龄的增长,研究获得的早期选择年龄也相应地延迟.从加速育种角度,在6a进行早期选择较为合理,而在培育大径材北美鹅掌楸方面可以16 a之后再进行疏伐选择. |
| Abstract_FL | [Objective] To study the growth pattern of Liriodendron tulipifera.[Method] A 24-year-old L.tulipifera plantation in Jurong of Jiangsu Province was used to study its growth pattern by means of stem analysis,and the ageage correlation of growth traits such as diameter at breast height (DBH),tree height and volume were explored.[Result] The results of stem analysis showed that,for DBH and tree height growth,the rapid growth period of L.tulipifera lasted for 12 years (the 6th to 17th year after planting),while the early growth of timber volume of L.tulipifera was slow in the period of the first year to the tenth year.After 12 year,the volume increased quickly,and reached the peak value at 20th year.The results of age-age correlation and early selection efficiency analysis showed that,for the DBH and tree height,the growth in the 6th year were significantly correlated with the growth in the 18th year,while for the volume,the growth in the 6th year were significantly correlated with growth in the 18th year.Setting 24th year as the age of final cutting,the optimum age for early selection in L.tulipifera was the 16th-18th year.[Conclusion] The DBH and tree height grow rapidly at early age.The competition and differentiation among individuals increase significantly during half-mature stage.With the increment of stand age,the age of early selection should be postponed.,n consequence of this result,the authors propose that early selection should be conducted at the 6th year to accelerate the process of tree breeding.While for the cultivation of large-diameter wood,thinning should be conducted after the 16th year. |
| Author | 郝自远 李火根 康昊 温小荣 胡永清 张井义 黄敏仁 涂峰 戴兆霞 |
| AuthorAffiliation | 南京林业大学南方现代林业协同创新中心,江苏南京210037 南京林业大学下蜀实习林场,江苏句容212400 |
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| Author_FL | HAO Zi-yuan ZHANG Jing-yi LI Huo-gen HUANG Min-ren WEN Xiao-rong DAI Zhao-xia KANG Hao HU Yong-qing TU Feng |
| Author_FL_xml | – sequence: 1 fullname: HAO Zi-yuan – sequence: 2 fullname: LI Huo-gen – sequence: 3 fullname: KANG Hao – sequence: 4 fullname: WEN Xiao-rong – sequence: 5 fullname: HU Yong-qing – sequence: 6 fullname: ZHANG Jing-yi – sequence: 7 fullname: HUANG Min-ren – sequence: 8 fullname: TU Feng – sequence: 9 fullname: DAI Zhao-xia |
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| DOI | 10.13275/j.cnki.lykxyj.2017.05.023 |
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| Keywords | Liriodendron tulipifera age-age correlation 北美鹅掌楸 生长规律 growth pattern 年年相关 stem analysis early selection 早期选择 树干解析 |
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| Notes | Liriodendron tulipifera; stem analysis; growth pattern; age-age correlation; early selection [ Objective] To study the growth pattern of Liriodendron tulipifera. [ Method] A 24-year-old L. tulipifera plantation in Jurong of Jiangsu Province was used to study its growth pattern by means of stem analysis, and the ageage correlation of growth traits such as diameter at breast height （ DBH）, tree height and volume were explored. [ Result ] The results of stem analysis showed that, for DBH and tree height growth, the rapid growth period of L. tulipifera lasted for 12 years （the 6th to 17th year after planting）, while the early growth of timber volume of L. tulipifera was slow in the period of the first year to the tenth year. After 12 year, the volume increased quickly, and reached the peak value at 20th year. The results of age-age correlation and early selection efficiency analysis showed that, for the DBH and tree height, the growth in the 6th year were significantly correlated with the growth in the 18th year, |
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| Publisher | 南京林业大学南方现代林业协同创新中心,江苏南京,210037%南京林业大学下蜀实习林场,江苏句容,212400 |
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| Snippet | [目的]北美鹅掌楸为优良的珍贵用材树种，研究其生长发育规律及生长性状早晚期相关对于北美鹅掌楸人工林高效培育有重要的指导意义。[方法]本文利用树干解析的方法对江苏句... S792.21; [目的]北美鹅掌楸为优良的珍贵用材树种,研究其生长发育规律及生长性状早晚期相关对于北美鹅掌楸人工林高效培育有重要的指导意义.[方法]本文利用树干解析的方法对... |
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| SubjectTerms | 北美鹅掌楸 年年相关 早期选择 树干解析 生长规律 |
| Title | 北美鹅掌楸人工林生长规律及早期选择可行性探究 |
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