植物研究 ›› 2026, Vol. 46 ›› Issue (2): 348-360.doi: 10.7525/j.issn.1673-5102.2026.02.013
• 研究论文column:Original Paper • 上一篇 下一篇
温海瑞1, 杨雨春2(
), 刘月2, 矫春晶2, 王君2, 王芳2, 杨叶磊1, 李依桐2, 王杰3
收稿日期:2025-11-24
出版日期:2026-03-20
发布日期:2026-04-02
通讯作者:
杨雨春
E-mail:yang-yu-chun@163.com
作者简介:温海瑞(1999—),男,硕士研究生,主要从事森林经理等方面研究。
基金资助:
Hairui WEN1, Yuchun YANG2(
), Yue LIU2, Chunjing JIAO2, Jun WANG2, Fang WANG2, Yelei YANG1, Yitong LI2, Jie WANG3
Received:2025-11-24
Online:2026-03-20
Published:2026-04-02
Contact:
Yuchun YANG
E-mail:yang-yu-chun@163.com
摘要:
非结构性碳水化合物(non-structural carbohydrates, NSC)与生态化学计量特征共同构成了植物碳-养分平衡的核心,分别调控植物能量储存与养分利用效率,是揭示植物环境适应策略的关键。然而,疏伐条件下不同器官间NSC的分配规律和元素化学计量特征尚不明确。因此,本研究以吉林省上营森林经营局人工红松(Pinus koraiensis)中龄林为研究对象,设置对照(control,CK,0)、轻度(light,LT,10%)、中度(moderate,MT,20%)和重度(heavy,HT,30%)4个疏伐处理,探究叶、枝、干、根器官中NSC、碳(C)、氮(N)、磷(P)含量及其化学计量特征对疏伐的响应。结果表明:疏伐显著提高了各器官NSC含量(P<0.05),且均在MT处理下达到最高值。针叶C含量保持稳定,而N、P含量呈现单峰趋势,在MT处理时较高,分别较CK处理增加17.6%和34.9%,同时C∶N(质量比)和C∶P(质量比)较低。HT处理导致枝、干N、P含量显著下降,分别较CK下降8.9%和26.9%(P<0.05)。根系C含量随疏伐强度增加而上升,HT处理较CK增加11.3%,N、P变化趋势与叶片一致,C∶N、C∶P在HT处理下较CK分别升高23.5%、33.3%。此外,主成分分析(principal component analysis,PCA)结果显示,LT处理中主成分1(principal component 1,PC1)和主成分2(principal component 2,PC2)的累积贡献率为82.6%;MT处理下前2个主成分的累积贡献率为93.8%;HT处理下前2个主成分的累积贡献率为92.2%。在3种疏伐强度下,PC1中可溶性糖、NSC、P的贡献较大,而PC2中C、N和N∶P(质量比)的贡献较大。综上,中度疏伐较为适宜,研究结果为深入理解疏伐对林木NSC和化学计量学的影响提供了重要参考。
中图分类号:
温海瑞, 杨雨春, 刘月, 矫春晶, 王君, 王芳, 杨叶磊, 李依桐, 王杰. 红松不同器官非结构性碳水化合物和化学计量特征对疏伐的响应[J]. 植物研究, 2026, 46(2): 348-360.
Hairui WEN, Yuchun YANG, Yue LIU, Chunjing JIAO, Jun WANG, Fang WANG, Yelei YANG, Yitong LI, Jie WANG. Responses of Non-structural Carbohydrates and Stoichiometric Characteristics of Pinus koraiensis to Thinning[J]. Bulletin of Botanical Research, 2026, 46(2): 348-360.
表1
红松人工林样地基本情况调查
处理 Treatment | 疏伐强度 Thinning intensity/% | 坡位 Slope position | 坡向 Aspect | 海拔 Elevation/m | 平均树高 Average tree height/m | 平均胸径 Average DBH/cm | Hegyi竞争指数 Hegyi competition index |
|---|---|---|---|---|---|---|---|
| 对照CK | 0 | 中 | 东 | 384 | 20.87±1.97d | 22.40±1.98c | 2.30±0.35a |
| 轻度疏伐LT | 10 | 下 | 东 | 371 | 21.23±2.18c | 22.53±2.85c | 1.79±0.79b |
| 中度疏伐MT | 20 | 下 | 东 | 377 | 22.15±3.62a | 23.22±2.23a | 1.17±0.63c |
| 重度疏伐HT | 30 | 下 | 东 | 369 | 21.63±2.53b | 22.81±1.67b | 0.95±0.22d |
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