河北师范大学地理科学学院,河北省环境演变与生态建设重点实验室,石家庄 050024
陈雅轩(2001—),女,硕士研究生,主要从事森林生态研究。E-mail: cyx15933626222@163.com
刘倩愿(1990—),女,博士,副教授,主要从事森林生态研究。E-mail: qianyuan@hebtu.edu.cn
收稿:2025-09-08,
修回:2025-10-16,
录用:2025-10-21,
网络首发:2025-12-31,
纸质出版:2026-04-01
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陈雅轩,艾昌奇,陈艳梅,等.不同林龄人工林根系性状、枯落物特性对土壤质量的影响[J].水土保持学报,2026,40(2):287-298.
CHEN Yaxuan, AI Changqi, CHEN Yanmei, et al. Effects of root traits and litter characteristics on soil quality of artificial plantations of different stand ages[J].Journal of Soil and Water Conservation,2026,40(2):287-298.
陈雅轩,艾昌奇,陈艳梅,等.不同林龄人工林根系性状、枯落物特性对土壤质量的影响[J].水土保持学报,2026,40(2):287-298. DOI: 10.13870/j.cnki.stbcxb.2026.02.020. CSTR: 32310.14.stbcxb.2026.02.020.
CHEN Yaxuan, AI Changqi, CHEN Yanmei, et al. Effects of root traits and litter characteristics on soil quality of artificial plantations of different stand ages[J].Journal of Soil and Water Conservation,2026,40(2):287-298. DOI: 10.13870/j.cnki.stbcxb.2026.02.020. CSTR: 32310.14.stbcxb.2026.02.020.
目的
2
探讨不同林龄人工林根系性状与枯落物特性对土壤质量的影响及其驱动作用,明确影响土壤质量随林龄增加而变化的关键植物因素。
方法
2
以不同林龄毛白杨(
Populus tomentosa
)、侧柏(
Platycladus orientalis
)和国槐(
Styphnolobium japonicum
)人工林为研究对象,测定其土壤理化性质、根系性状、枯落物碳氮质量分数与持水特性,并探讨根系与枯落物对土壤质量的驱动作用及其随林龄变化的规律。
结果
2
1)随林龄增加,人工林土壤质量指数均增大,相对高龄人工林土壤质量指数在树种间无显著差异。2)影响土壤质量指数的主要因素包括枯落物氮质量分数(贡献率为39.8%)、根系碳质量分数(21.3%)、根直径(12.4%)和枯落物自然水分体积分数(8.3%)。3)毛白杨和侧柏人工林土壤质量指数主要受枯落物(72.1%和56.9%)影响,国槐人工林土壤质量指数主要受根系性状(56.7%)影响。4)枯落物对土壤质量指数的影响随林龄增加而减小(83.0%~52.9%),而根系性状的影响则增大(17.0%~47.1%)。
结论
2
不同林龄和树种人工林根系性状、枯落物特性对土壤质量的影响不同,其土壤管理策略应根据根系和枯落物的特性进行优化,研究可为实践中基于林龄和树种差异的人工林生态系统理想群落构建提供依据。
Objective
2
To explore the influence of root traits and litter characteristics of artificial plantations of different stand ages on soil quality and their driving effects, and to identify the key plant factors that affect the variation of soil quality with increasing stand age.
Methods
2
In this study,
Populus tomentosa
,
Platycladus orientalis
, and
Styphnolobium japonicum
plantations of different stand ages were taken as the research objects. The soil physicochemical properties, root traits, and the carbon and nitrogen contents and the water-holding capacity of the litter were determined, and the driving effects of roots and litter on soil quality and their variation patterns with increasing stand age were explored.
Results
2
1) The soil quality index of plantations increased with increasing stand age. There was no significant difference in the soil quality index among tree species in relatively old plantations. 2) The main factors affecting the soil quality index were the nitrogen content of litter (with a contribution rate of 39.8%), the carbon content of root (21.3%), root diameter (12.4%), and natural water content of litter (8.3%). 3) The soil quality indices of
P. tomentosa
and
P. orientalis
plantations were mainly affected by litter (72.1% and 56.9%), while the soil quality index of
S. japonicum
plantations was mainly affected by root traits (56.7%). 4) The impact of litter on the soil quality index decreased with increasing stand age (83.0%-52.9%), while that of root traits increased (17.0%-47.1%).
Conclusion
2
The effects of root traits and litter characteristics on soil quality in plantations of different stand ages and tree species are different, and the soil management strategies should be optimized according to the characteristics of roots and litter. This study can provide a theoretical basis for constructing the ideal community of plantation ecosystems based on differences in stand age and tree species.
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