抚育间伐对辽东山区日本落叶松人工林碳储量及其组成的影响

doi:10.13287/j.1001-9332.202507.003

应用生态学报 ›› 2025, Vol. 36 ›› Issue (7): 1991-1999.doi: 10.13287/j.1001-9332.202507.003

抚育间伐对辽东山区日本落叶松人工林碳储量及其组成的影响

曹正^1,2,3, 苏宝玲¹, 张岩松^2,3, 孙志虎⁴, 周莉^2,3, 于大炮^2,3, 王庆伟^2,3*

¹沈阳大学生命科学与工程学院, 沈阳 110044;
²中国科学院沈阳应用生态研究所森林生态与管理重点实验室, 沈阳 110016;
³吉林长白山西坡森林生态系统国家定位观测站, 吉林白山 134506;
⁴东北林业大学生态学院, 哈尔滨 150040

收稿日期:2025-03-26 接受日期:2025-04-29 出版日期:2025-07-18 发布日期:2026-01-18
通讯作者: *E-mail: wangqingwei@iae.ac.cn
作者简介:曹正, 男, 1999年生, 硕士研究生。主要从事森林经营管理与碳汇功能提升机制研究。E-mail: 965580739@qq.com
基金资助:
“十四五”国家重点研发计划项目(2021YFD220040202)、国家自然科学基金面上项目(32371860)、国家资助博士后研究人员计划项目(GZC20232876)、辽宁省科学技术计划项目(2023JH2/101800042)和中国科学院重点实验室定向委托项目(KLFES-2023)

Effects of thinning on carbon stocks and fractions of Larix kaempferi plantation in eastern area of Liaoning Province, China

CAO Zheng^1,2,3, SU Baoling¹, ZHANG Yansong^2,3, SUN Zhihu⁴, ZHOU Li^2,3, YU Dapao^2,3, WANG Qingwei^2,3*

¹College of Life Science and Bioengineering, Shenyang University, Shenyang 110044, China;
²CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
³Changbaishan Xipo National Field Observation and Research Station for Forest Ecosystem, Baishan 134506, Jilin, China;
⁴School of Ecology, Northeast Forestry University, Harbin 150040, China

Received:2025-03-26 Accepted:2025-04-29 Online:2025-07-18 Published:2026-01-18

摘要/Abstract

摘要： 抚育间伐是森林经营管理的重要措施,其合理实施对于充分发挥森林生态系统碳汇功能具有重要意义。然而,间伐强度如何影响森林生态系统碳储量及其组成尚不明确。本研究以辽东山区的日本落叶松人工林为研究对象,分析不同间伐强度下(0、10%～30%、30%～50%和50%～70%)日本落叶松人工林碳储量及其组分差异,探讨影响林分生产力和土壤有机碳变化的关键因子。结果表明: 随着间伐强度的增加,日本落叶松人工林乔木生物量碳储量逐渐降低,从110.89 Mg C·hm^-2降到65.77 Mg C·hm^-2,各间伐强度下草本植物生物量碳储量显著低于对照林地,说明较高的间伐强度导致落叶松人工林碳储量严重损失。相较于对照林地,各间伐强度均提高了保留木单木生物量碳增量,而仅轻度间伐(25%)提高了保留木林分生物量碳增量,说明轻度间伐对日本落叶松人工林进行抚育较为合适,太阳散射辐射是影响保留木林分生物量增量的重要因子。在0～20 cm土层,不同间伐强度下土壤颗粒有机碳(POC)储量差异显著,POC储量与凋落物生物量和土壤碳氮比呈显著正相关;在20～40 cm土层,不同间伐强度下土壤有机碳(SOC)和POC储量差异显著,SOC储量与土壤碳氮比呈显著负相关,POC储量与凋落物生物量呈显著负相关。这说明不同土层SOC的形成与稳定机制存在明显差异。

关键词: 日本落叶松, 间伐, 光环境, 生物量碳, 土壤有机碳

Abstract: Thinning is a crucial silvicultural practice in forest management, the rational intensity of which plays an important role in increasing carbon sequestration capacity of forest ecosystems. However, it is not clear how different thinning intensities affect forest ecosystem carbon stocks and their fractions. We investigated Larix kaempferi plantations in the mountainous regions of eastern Liaoning Province, analyzed changes in carbon stocks and fractions with different thinning intensities (0, 10%-30%, 30%-50% and 50%-70%), and explored key factors influencing stand productivity and soil organic carbon dynamics. The results showed that tree biomass carbon stocks gradually decreased with increasing thinning intensity (from 110.89 Mg C·hm^-2 to 65.77 Mg C·hm^-2) and that herbaceous biomass carbon stocks were significantly lower at different thinning intensities than in control stand, indicating that higher thinning intensities resulted in substantial carbon loss. Compared to the control stand, different thinning intensities increased the reserved individual tree biomass C increment, but only light thinning (25%) improved the reserved stand biomass C increment, suggesting that light thinning was the optimal intensity for L. kaempferi plantations. Diffuse solar radiation was the main factor affecting reserved stand biomass increment. In 0-20 cm soil layer, particulate organic carbon (POC) stocks showed significant difference between different thinning intensities. POC stocks were positively correlated with litter biomass and soil C:N. In 20-40 cm soil layer, soil organic carbon (SOC) and POC stocks showed significant difference between different thinning intensities. SOC and POC stocks were negatively related to soil C:N and litter biomass, respectively. These results suggested that there are different mechanisms of SOC formation and stabilization in different soil layers.

Key words: Larix kaempferi, thinning, light environment, biomass carbon, soil organic carbon

曹正, 苏宝玲, 张岩松, 孙志虎, 周莉, 于大炮, 王庆伟. 抚育间伐对辽东山区日本落叶松人工林碳储量及其组成的影响[J]. 应用生态学报, 2025, 36(7): 1991-1999.

CAO Zheng, SU Baoling, ZHANG Yansong, SUN Zhihu, ZHOU Li, YU Dapao, WANG Qingwei. Effects of thinning on carbon stocks and fractions of Larix kaempferi plantation in eastern area of Liaoning Province, China[J]. Chinese Journal of Applied Ecology, 2025, 36(7): 1991-1999.

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抚育间伐对辽东山区日本落叶松人工林碳储量及其组成的影响

Effects of thinning on carbon stocks and fractions of Larix kaempferi plantation in eastern area of Liaoning Province, China

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