[1]高 伟,林国江,颜 耀,等.阔叶化改培对马尾松林土壤碳氮转化的影响[J].南京师大学报(自然科学版),2025,48(03):63-72.[doi:10.3969/j.issn.1001-4616.2025.03.008]
　Gao Wei,Lin Guojiang,Yan Yao,et al.Effects of Broad-Leaved Cultivation on Soil Carbon and Nitrogen Transformation in Pinus massoniana Plantation[J].Journal of Nanjing Normal University(Natural Science Edition),2025,48(03):63-72.[doi:10.3969/j.issn.1001-4616.2025.03.008]
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阔叶化改培对马尾松林土壤碳氮转化的影响()

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
48
期数:
2025年03期
页码:
63-72
栏目:
生态学
出版日期:
2025-06-20

文章信息/Info

Title:
Effects of Broad-Leaved Cultivation on Soil Carbon and Nitrogen Transformation in Pinus massoniana Plantation
文章编号:
1001-4616(2025)03-0063-10
作者:
高 伟1; 2; 林国江1; 2; 颜 耀1; 2; 郑兆飞3; 郑清东4
(1.福建林业职业技术学院森林生态与碳汇计量研究所,福建 南平 353000)
(2.福建林业职业技术学院林学系,福建 南平 353000)
(3.南平市林业局,福建 南平 353000)
(4.福建农林大学林学院,福建 福州 350001)
Author(s):
Gao Wei1; 2; Lin Guojiang1; 2; Yan Yao1; 2; Zheng Zhaofei3; Zheng Qingdong4
(1.Institute of Forest Ecology and Carbon Sink Measurement,Fujian Forestry Vocational and Technical College,Nanping 353000,China)
(2.Department of Forestry,Fujian Forestry Vocational and Technical College,Nanping 353000,China)
(3.Nanping Forestry Bureau,Nanping 353000,China)
(4.College of Forestry,Fujian Agriculture and Forestry University,Fuzhou 350001,China)
关键词:
马尾松人工林; 阔叶树; 质量提升; 土壤呼吸; 氮矿化
Keywords:
Pinus massoniana plantation; broad-leaved tree; quality improvement; soil respiration; nitrogen mineralization
分类号:
S714.2
DOI:
10.3969/j.issn.1001-4616.2025.03.008
文献标志码:
A
摘要:
深入探究亚热带地区不同阔叶化改培措施对马尾松人工林土壤碳氮转化过程的具体影响及其微观机制,为解决低效马尾松人工林改造及经营管理中的实际问题提供科学且精准的理论依据. 选取亚热带地区27a生马尾松人工林作为研究对象,设置未间伐马尾松林作为对照,以间伐套种木荷、间伐套种毛红椿两种改培模式为处理组,通过对土壤呼吸、氮矿化等指标的测定,系统研究不同阔叶化改培模式对马尾松人工林土壤碳氮转化过程的影响及作用机制. 结果显示:(1)3种改培模式的土壤呼吸速率在春季、夏季和秋季均表现出明显的日变化,最高值均出现在12:00—16:00,最低值基本都出现在2:00左右,而在冬季均没有明显的日变化;(2)3种改培模式的土壤呼吸速率季节变化均为夏高冬低,且在不同季节均为间伐套种木荷模式最高,未间伐马尾松纯林最低;(3)3种改培模式的土壤铵态氮、硝态氮、总矿质氮含量、土壤净氨化速率、净硝化速率和总矿化速率季节变化均为单峰曲线,不同季节中,2种套种模式的氮转化速率均高于对照;(4)3种改培模式的土壤呼吸除受土壤温度变化外,还受到土壤湿度的调控,土壤呼吸的温度敏感系数最高为间伐套种木荷模式. 年凋落物量、土壤全碳、土壤全氮、土壤pH和细根生物量与土壤呼吸速率和总氮矿化速率呈显著正相关,凋落物碳氮比、凋落物木质素/N、土壤容重、细根碳氮比与土壤呼吸速率和总氮矿化速率呈显著负相关. 间伐初期的林窗效应和由套种不同阔叶树介导的土壤有机碳输入数量和质量、土壤理化性质和微生物活性差异,导致阔叶化改培提高了马尾松林的土壤呼吸速率、土壤呼吸温度敏感性和土壤氮转化速率.
Abstract:
To conduct an in-depth exploration of the specific impacts and micro-mechanisms of different broad-leaved transformation and cultivation measures on the soil carbon and nitrogen transformation processes in Pinus massoniana plantations in subtropical regions,and to provide a scientific and precise theoretical basis for solving practical problems in the transformation and management of inefficient Pinus massoniana plantations. Taking 27-year-old Pinus massoniana plantations in subtropical regions as the research objects,the un-thinned Pinus massoniana plantations were set as the control group,and the two transformation and cultivation modes of thinning and interplanting Schima superba and thinning and interplanting Toona ciliata were used as the treatment groups. Through the determination of indicators such as soil respiration and nitrogen mineralization,the impacts and action mechanisms of different broad-leaved transformation and cultivation modes on the soil carbon and nitrogen transformation processes in Pinus massoniana plantations were systematically studied. The results showed that:(1)The soil respiration rates of the three transformation and cultivation modes showed obvious daily variations in spring,summer and autumn. The highest values all occurred in 12:00-16:00,and the lowest values basically appeared around 2:00. However,there was no obvious daily variation in winter.(2)The seasonal variation of the soil respiration rates of the three transformation and cultivation modes was higher in summer and lower in winter. In different seasons,the soil respiration rate of the thinning and interplanting Schima superba mode was the highest,and that of the un-thinned Pinus massoniana plantation was the lowest.(3)The seasonal changes of soil ammonium nitrogen,nitrate nitrogen,total mineral nitrogen content,soil net ammonification rate,net nitrification rate,and total mineralization rate of the three transformation and cultivation modes all presented unimodal curves. In different seasons,the nitrogen transformation rates of the two interplanting modes were higher than those of the control.(4)The soil respiration of the three transformation and cultivation modes was not only affected by the change of soil temperature but also regulated by soil moisture. The temperature sensitivity coefficient of soil respiration was the highest in the thinning and interplanting Schima superba mode. Annual litterfall,soil total carbon,soil total nitrogen,soil pH,and fine root biomass were significantly positively correlated with soil respiration rate and total nitrogen mineralization rate,while litter carbon-nitrogen ratio,litter lignin/N,soil bulk density,and fine root carbon-nitrogen ratio were significantly negatively correlated with soil respiration rate and total nitrogen mineralization rate. The forest gap effect in the early stage of thinning and the differences in the quantity and quality of soil organic carbon input,soil physical and chemical properties,and microbial activity mediated by interplanting different broad-leaved trees led to the improvement of soil respiration rate,soil respiration temperature sensitivity,and soil nitrogen transformation rate in Pinus massoniana plantations through broad-leaved transformation and cultivation.

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备注/Memo

备注/Memo:
收稿日期:2024-01-03.
基金项目:福建省中青年教师教育科研重点项目(JZ230077)、福建省林业科学研究项目(2023FKJ31)、福建省科技计划项目(2021Y6003).
通讯作者:高伟,博士,高级工程师,研究方向:森林生态系统碳氮循环研究. E-mail:gao01271@163.com
更新日期/Last Update: 2025-06-20