亚热带杉木和米槠人工林土壤真菌和细菌残体碳积累差异

doi:10.13287/j.1001-9332.202603.015

应用生态学报 ›› 2026, Vol. 37 ›› Issue (3): 779-786.doi: 10.13287/j.1001-9332.202603.015

亚热带杉木和米槠人工林土壤真菌和细菌残体碳积累差异

吴臻杰¹, 谭思懿¹, 吴福忠^1,2,3, 谢荣樟⁴, 朱晶晶¹, 倪祥银^1,2,3*

¹福建师范大学地理科学学院、碳中和未来技术学院, 福州 350117;
²湿润亚热带生态-地理过程教育部重点实验室, 福州 350117;
³福建三明森林生态系统国家野外科学观测研究站, 福建三明 365002;
⁴福建省三明市三元区林业局, 福建三明 365000

收稿日期:2025-07-07 接受日期:2026-01-23 出版日期:2026-03-18 发布日期:2026-09-18
通讯作者: *E-mail: nixy@fjnu.edu.cn
作者简介:吴臻杰, 男, 2001年生, 硕士研究生。主要从事森林土壤微生物残体研究。E-mail: zhenjiewu2001@163.com
基金资助:
国家自然科学基金项目(32471834, 32022056)、国家重点研发计划项目(2023YFF1305500)和福建省攻关青年基金项目(2025J011012)

Differences in soil fungal and bacterial necromass carbon accumulation between subtropical Cunninghamia lanceolata and Castanopsis carlesii plantations

WU Zhenjie¹, TAN Siyi¹, WU Fuzhong^1,2,3, XIE Rongzhang⁴, ZHU Jingjing¹, NI Xiangyin^1,2,3*

¹School of Geographical Sciences and Carbon Neutrality Future Technology, Fujian Normal University, Fuzhou 350117, China;
²Key Laboratory for Humid Subtropical Eco-Geographical Processes of Ministry of Education, Fuzhou 350117, China;
³Fujian Sanming Forest Ecosystem National Observation and Research Station, Sanming 365002, Fujian, China;
⁴Forestry Bureau of Sanyuan District in Sanming City, Sanming 365000, Fujian, China

Received:2025-07-07 Accepted:2026-01-23 Online:2026-03-18 Published:2026-09-18

摘要/Abstract

摘要： 杉木是我国南方主要的造林树种。与地带性常绿阔叶树种相比,杉木凋落物提供的碳源质量相对较低,可以通过调控土壤微生物群落结构和微生物生物量周转改变微生物残体碳积累,但相关作用机制仍不清晰。本研究对比分析了杉木和米槠人工林土壤有机质(SOM)、颗粒态有机质(POM)和矿物结合态有机质(MAOM)中真菌和细菌残体碳变化。结果表明:杉木人工林土壤真菌和细菌残体碳含量均显著高于米槠人工林。杉木人工林SOM中真菌和细菌残体碳含量平均分别比米槠人工林高32.8%和28.9%,POM中分别高19.7%和31.4%,MAOM中分别高48.2%和37.0%。杉木人工林土壤MAOM具有更高的微生物残体碳积累效率,且与土壤有机碳、碳氮比和微生物生物量碳显著相关,而米槠人工林土壤微生物残体碳主要积累在POM中。与地带性优势树种米槠相比,杉木人工林土壤中更多的微生物残体碳进入MAOM,能够形成较为稳定的土壤有机质以维持土壤肥力。

关键词: 杉木人工林, 颗粒态有机质, 矿物结合态有机质, 氨基糖, 微生物残体碳

Abstract: Cunninghamia lanceolata is a major tree species for afforestation in southern China. Compared with native evergreen broadleaved tree species, C. lanceolata produces litter with low-quality carbon substrates, which may change the accumulation of microbial necromass carbon by controlling microbial community and biomass turnover, but the underlying mechanisms remain poorly understood. In this study, we evaluated the differences in microbial necromass carbon in soil organic matter (SOM), particulate (POM) and mineral-associated organic matter (MAOM) between a C. lanceolata plantation and a Castanopsis carlesii plantation. The results showed that soil microbial necromass carbon was significantly higher in C. lanceolata plantation than that in C. carlesii plantation. The average carbon content of fungal and bacterial residues in the SOM of C. lanceolata plantations was 32.8% and 28.9% higher than that in C. carlesii plantations, respectively. For POM, it was 19.7% and 31.4% higher, and for MAOM, it was 48.2% and 37.0% higher. The MAOM in the soil of C. lanceolata plantations exhibited higher microbial residue carbon accumulation efficiency and was significantly correlated with soil organic carbon, C/N ratio, and microbial biomass carbon, whereas the microbial residue carbon in the soil of C. carlesii plantations was primarily accumulated in the POM. Compared to the dominant endemic tree species C. carlesii, more microbial residue carbon in the soil of C. lanceolata plantations entered the MAOM, forming relatively stable soil organic matter to maintain soil fertility.

Key words: Chinese fir plantation, particulate organic matter, mineral-associated organic matter, amino sugar, microbial necromass carbon

吴臻杰, 谭思懿, 吴福忠, 谢荣樟, 朱晶晶, 倪祥银. 亚热带杉木和米槠人工林土壤真菌和细菌残体碳积累差异[J]. 应用生态学报, 2026, 37(3): 779-786.

WU Zhenjie, TAN Siyi, WU Fuzhong, XIE Rongzhang, ZHU Jingjing, NI Xiangyin. Differences in soil fungal and bacterial necromass carbon accumulation between subtropical Cunninghamia lanceolata and Castanopsis carlesii plantations[J]. Chinese Journal of Applied Ecology, 2026, 37(3): 779-786.

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亚热带杉木和米槠人工林土壤真菌和细菌残体碳积累差异

Differences in soil fungal and bacterial necromass carbon accumulation between subtropical Cunninghamia lanceolata and Castanopsis carlesii plantations

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