柳杉人工林枝叶非结构性碳水化合物含量及分配策略

doi:10.16088/j.issn.1001-6600.2025010201

广西师范大学学报（自然科学版） ›› 2026, Vol. 44 ›› Issue (2): 218-227.doi: 10.16088/j.issn.1001-6600.2025010201

柳杉人工林枝叶非结构性碳水化合物含量及分配策略

简毅^1,2, 李冬青^3,4,5, 林静^1,2*, 游成铭^3,4,5, 谭波^3,4,5, 徐振锋^3,4,5, 徐琳^3,4,5, 张可欣^1,2

1.四川龙门山森林生态系统国家定位观测研究站,四川绵阳 622550;
2.森林和湿地生态恢复与保育四川省重点实验室,四川省林业科学研究院,四川成都 610081;
3.长江上游森林生态与保育四川省重点实验室(四川农业大学),四川成都 611130;
4.四川峨眉山森林生态系统国家定位观测研究站(四川农业大学),四川成都 611130;
5.四川农业大学林学院,四川成都 611130

收稿日期:2025-01-02 修回日期:2025-04-07 发布日期:2026-02-03
通讯作者: 林静(1983—),女,四川富顺人,四川省林业科学研究院副研究员,博士。E-mail: linjing121004@163.com
基金资助:
国家科技部科技基础资源调查专项资金(2022FY100200);四川省自然科学基金(2023NSFSC1191);中国博士后科学基金(2023M742511)

Non-structural Carbohydrate Content and Allocation Strategies in Branchesand Leaves of Cryptomeria japonica Plantations

JIAN Yi^1,2, LI Dongqing^3,4,5, LIN Jing^1,2*, YOU Chengming^3,4,5, TAN Bo^3,4,5, XU Zhenfeng^3,4,5, XU Lin^3,4,5, ZHANG Kexin^1,2

1. Longmenshan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Mianyang Sichuan 622550, China;
2. Ecological Restoration and Conservation for Forest and Wetland Key Laboratoryof Sichuan Province, Sichuan Academy of Forestry, Chengdu Sichuan 610081, China;
3. Sichuan Provincial KeyLaboratory of Forest Ecology and Conservation in the Upper Reaches of the Yangtze River (Sichuan AgriculturalUniversity), Chengdu Sichuan 611130, China;
4. Sichuan Mt. Emei Forest Ecosystem National Observation andResearch Station (Sichuan Agricultural University), Chengdu Sichuan 611130, China;
5. College of Forestry, Sichuan Agricultural University, Chengdu Sichuan 611130, China

Received:2025-01-02 Revised:2025-04-07 Published:2026-02-03

摘要/Abstract

摘要： 非结构性碳水化合物是植物生长代谢的重要碳组分,植物通过调节枝叶间非结构性碳水化合物(NSC)的分配格局来优化生存策略。为探究不同林龄柳杉人工林枝叶的NSC含量特征,以华西雨屏区柳杉人工林幼龄林(6 a)、中龄林(12 a)、近熟林(23 a)、成熟林(27 a、32 a)和过熟林(46 a、52 a)为研究对象,测定分析新鲜枝叶和凋落枝叶的非结构性碳水化合物及其组分含量。结果发现:1)柳杉新鲜枝可溶性糖含量、可溶性糖/淀粉含量比值、NSC含量随林龄增加而降低,新鲜叶NSC及其组分含量随林龄增加呈现先升高后降低的趋势;2)凋落枝NSC及其组分含量随林龄增加变化趋势不明显,可溶性糖/淀粉含量比值在12 a最低;3)新鲜叶片、凋落叶片NSC及其组分含量均分别高于新鲜枝条和凋落枝条,且凋落叶淀粉含量与叶片氮、磷含量呈显著正相关;凋落枝NSC与叶片氮含量呈显著负相关;4)同一林龄柳杉新鲜枝叶的NSC及其组分含量与凋落枝叶的比值均大于1,说明柳杉在衰老前会将NSC从凋落组织转移至新鲜组织,以优化碳资源利用。这些结果有助于深入理解不同林龄柳杉维持生长的碳代谢平衡策略,为通过合理调控林龄结构和优化林分管理以提高柳杉林生产力提供了理论依据。

关键词: 柳杉, 人工林, 林龄, 非结构性碳水化合物, 分配策略

Abstract: Non-structural carbohydrates (NSC) are key carbon components for plant growth and metabolism. Plants optimize their survival strategies by regulating NSC allocation patterns between branches and leaves. In order to investigate the content characteristics of NSC in the branches and leaves of Cryptomeria japonica plantations of different ages, young (6 a), middle-aged (12 a), near-mature (23 a), mature (27 a, 32 a) and over-mature (46 a, 52 a) were selected as the research objects. The contents of NSC and its components in fresh and litter branches and leaves were determined. The results showed as follows: 1) The contents of soluble sugar, soluble sugar/starch and NSC decreased with the increase of age. The highest starch content was in 23 a. The content of NSC and its components in fresh leaves increased first and then decreased with the increase of age, and the highest content was found at 32 a. The content of soluble sugar/starch was the highest at 23 a. 2) The change trend of NSC and its component content in litter was not obvious with the increase of stand age. The contents of NSC and its components in litter increased first and then decreased with the increase of stand age, and the highest values were found at 23 a or 27 a. The content of soluble sugar/starch was the lowest in 12 a. 3) The contents of non-structural carbohydrate and its components in fresh and litter leaves were higher than those in fresh and litter branches, respectively. The content of starch in leaf litter was positively correlated with the content of nitrogen and phosphorus. There was a significant negative correlation between NSC and leaf nitrogen content in litter. 4) The ratio of the contents of NSC and its components in the fresh branches and leaves of the same age to that in the litters was greater than 1, indicating that C. japonica transfers NSC from senescent tissues to fresh tissues prior to senescence to optimize carbon resource utilization. These findings not only enhance the understanding of the carbon metabolism balance strategies employed by C. japonica stands of varying ages to sustain growth, but also provide a theoretical basis for improving the productivity of C. japonica plantations through rational regulation of stand age structure and optimization of forest stand management.

Key words: Cryptomeria japonica, artificial forest, forest age, non-structural carbohydrates, allocation strategy

中图分类号: S791.31;Q948

简毅, 李冬青, 林静, 游成铭, 谭波, 徐振锋, 徐琳, 张可欣. 柳杉人工林枝叶非结构性碳水化合物含量及分配策略[J]. 广西师范大学学报（自然科学版）, 2026, 44(2): 218-227.

JIAN Yi, LI Dongqing, LIN Jing, YOU Chengming, TAN Bo, XU Zhenfeng, XU Lin, ZHANG Kexin. Non-structural Carbohydrate Content and Allocation Strategies in Branchesand Leaves of Cryptomeria japonica Plantations[J]. Journal of Guangxi Normal University(Natural Science Edition), 2026, 44(2): 218-227.

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柳杉人工林枝叶非结构性碳水化合物含量及分配策略

Non-structural Carbohydrate Content and Allocation Strategies in Branchesand Leaves of Cryptomeria japonica Plantations

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