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应用生态学报 ›› 2021, Vol. 32 ›› Issue (4): 1163-1174.doi: 10.13287/j.1001-9332.202104.001

• 研究论文 • 上一篇    下一篇

亚热带红壤侵蚀区马尾松不同套种模式生态系统碳平衡

程分生1,2, 尤龙辉1,3*, 叶功富1, 游惠明1, 聂森1, 林文泉1,2   

  1. 1福建省林业科学研究院, 福州 350012;
    2福建农林大学林学院, 福州 350002;
    3福州市林业局自然保护地规划发展中心, 福州 350007
  • 收稿日期:2020-04-20 接受日期:2020-07-15 发布日期:2021-10-25
  • 通讯作者: *E-mail: m378384996@126.com
  • 作者简介:程分生, 男, 1996年生, 硕士研究生。主要从事退化森林生态修复研究。E-mail: 15770843331@163.com
  • 基金资助:
    福建省林业科研项目(闽林科便函〔2019〕16号)、国家科技支撑计划项目(2014BAD15B00)和福建省公益类科研院所专项(2017R1011-2)资助

Carbon balance in an interplanting Pinus massoniana stand in subtropical eroded red soil region, China.

CHENG Fen-sheng1,2, YOU Long-hui1,3*, YE Gong-fu1, YOU Hui-ming1, NIE Sen1, LIN Wen-quan1,2   

  1. 1Fujian Academy of Forestry Sciences, Fuzhou 350012, China;
    2College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    3Planning and Development Center of Nature Reserves, Fuzhou Forestry Bureau, Fuzhou 350007, China
  • Received:2020-04-20 Accepted:2020-07-15 Published:2021-10-25
  • Contact: *E-mail: m378384996@126.com
  • Supported by:
    Forestry Research Project of Fujian Province (Letter No. 16, 2019 from Fujian Forestry Department), the National Science and Technology Support Program (2014BAD15B00), and the Special Project of Fujian Public Welfare Scientific Research Institute (2017R1011-2).

摘要: 以福建省长汀县红壤侵蚀区马尾松低效林套种杨梅、无患子、油茶及黄栀子的改造模式林分为研究对象,对林分各组分生物量年净生长量、含碳率及土壤异养呼吸进行定位观测,分析套种模式对低效马尾松林分生态系统碳储量格局及碳平衡的影响。结果表明: 杨梅、无患子、油茶、黄栀子和马尾松不同器官含碳率的变化范围分别为41.1%~50.1%、42.2%~50.6%、45.1%~48.9%、44.7%~49.6%和46.1%~51.9%。不同树种同一器官之间的含碳率存在显著差异。马尾松套种杨梅及马尾松套种无患子模式植被层碳储量及年净增碳储量最高,分别为67.62~68.42 t·hm-2和9.21~9.45 t·hm-2·a-1,马尾松套种油茶和马尾松套种黄栀子模式较小,分别为31.96~36.24 t·hm-2和4.09~4.16 t·hm-2·a-1,马尾松纯林对照最小,分别为17.01 t·hm-2和2.00 t·hm-2·a-1。土壤异养呼吸年通量从高到低依次为马尾松套种杨梅模式(7.41 t·hm-2·a-1)>马尾松套种油茶模式(5.89 t·hm-2·a-1)>马尾松套种无患子模式(5.86 t·hm-2·a-1)>马尾松套种黄栀子模式(4.95 t·hm-2·a-1)>马尾松纯林对照(2.45 t·hm-2·a-1)。马尾松套种杨梅和马尾松套种无患子模式的年净生态系统碳平衡分别为2.04和3.27 t C·hm-2·a-1,表现为“碳汇”,马尾松套种油茶和马尾松套种黄栀子模式及马尾松纯林对照的年净生态系统碳平衡分别为-1.80、-0.80和-0.45 t C·hm-2·a-1,表现为“碳源”。总体上,短期内马尾松低效林套种杨梅或无患子能够提升林分的固碳增汇效益。

关键词: 马尾松, 套种模式, 碳储量, 碳平衡

Abstract: We measured the annual net biomass growth, carbon content of each component and soil heterotrophic respiration in four low-efficiency interplanting patterns, i.e., Pinus massoniana stands interplanting Myrica rubra, Sapindus mukurossi, Camellia oleifera and Gardenia jasminoides in Changting County, Fujian Province, with the aim to analyze the effects of interplanting patterns on carbon storage pattern and carbon balance of low-efficiency P. massoniana stand. The ranges of carbon content in different organs of M. rubra, S. mukurossi, C. oleifera, G. jasminoides and P. massoniana were 41.1%-50.1%, 42.2%-50.6%, 45.1%-48.9%, 44.7%-49.6% and 46.1%-51.9%, respectively. Carbon content of the same organ significantly differed among tree species. The pattern of P. massoniana interplanting M. rubra and S. mukurossi had the highest carbon stock and annual net carbon increase reserves, with values of 67.62-68.42 t·hm-2 and 9.21-9.45 t·hm-2·a-1, respectively. Followed by the lower pattern of C. oleifera, G. jasminoides, with values of 31.96-36.24 t·hm-2 and 4.09-4.16 t·hm-2·a-1, respectively. The P. massoniana pure forest was the lowest, with values of 17.01 t·hm-2 and 2.00 t·hm-2·a-1, respectively. Annual flux of soil heterotrophic respiration was following the order of P. massoniana interplanting M. rubra pattern (7.41 t·hm-2·a-1) > P. massoniana interplanting C. oleifera pattern (5.89 t·hm-2·a-1)> P. massoniana interplanting S. mukurossi pattern (5.86 t·hm-2·a-1) > P. massoniana interplanting G. jasminoides pattern (4.95 t·hm-2·a-1) > P. massoniana pure forest (2.45 t·hm-2·a-1). Annual net ecosystem carbon balance of P. massoniana interplanting M. rubra and S. mukurossi patterns were 2.04 and 3.27 t C·hm-2·a-1, showing a “carbon sink” pattern. The net carbon balance in the patterns of P. massoniana interplanting C. oleifera and G. jasminoides along with P. massoniana pure forest were -1.80, -0.80 and -0.45 t C·hm-2·a-1, which expressed a “carbon source” pattern. In the short-term, interplanting with M. rubra or S. mukurossi could improve the carbon income of the low-efficiency P. massoniana stand ecosystem.

Key words: Pinus massoniana, interplanting pattern, carbon stock, carbon balance