中南林业科技大学学报

宁夏罗山4种混交群落植物-凋落物-土壤生态化学计量特征

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杨盈盈 ¹ , 杨天宇 ² , 郭邵华 ¹ , 刘芳妤 ¹ , 曹兵 ¹ , 杨君珑 ¹ , 徐雪蕾 ¹

中南林业科技大学学报 | 生态学 2026,46(5): 137-148

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中南林业科技大学学报 |生态学 2026 , 46 (5) : 137 -148

宁夏罗山4种混交群落植物-凋落物-土壤生态化学计量特征

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杨盈盈¹, 杨天宇², 郭邵华¹, 刘芳妤¹, 曹兵¹, 杨君珑¹, 徐雪蕾¹

作者信息

^1.宁夏大学　a. 林业与草业学院；b. 林木资源高效生产全国重点实验室，宁夏　银川　750021

^2.宁夏沙坡头国家级自然保护区管理局，宁夏　中卫　755000

通讯作者:

徐雪蕾（xuxuelei@nxu.edu.cn），副教授，博士，硕士研究生导师。

作者简介:

杨盈盈（1735484852@qq.com），硕士研究生。

Ecological stoichiometric characteristics of plant-litter-soil continuum in four mixed communities on Luo mountain, Ningxia

Yingying YANG¹, Tianyu YANG², Shaohua GUO¹, Fangyu LIU¹, Bing CAO¹, Junlong YANG¹, Xuelei XU¹

Affiliations

^1.a. School of Forestry and Grassland Science; b. State Key Laboratory of Efficient Production of Forest Resources, Ningxia University, Yinchuan 750021, Ningxia, China

^2.Administration of Shapotou National Nature Reserve, Zhongwei 755000, Ningxia, China

出版时间: 2026-05-25 doi: 10.14067/j.cnki.1673-923x.2026.05.014

文章导航

摘要

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【目的】

研究宁夏罗山混交群落植物各器官、凋落物、土壤生态化学计量特征及养分再吸收率与利用率，以揭示混交群落养分分配和利用策略，为罗山植被保护和合理经营提供科学依据。

【方法】

以宁夏罗山高山灌木混交群落、浅山灌木混交群落、针叶混交群落、针阔混交群落4种典型混交群落为研究对象，探讨植物叶、枝、根、凋落物，以及土壤C、N、P含量及其化学计量比的差异和相关关系，分析植物各器官与土壤间的耦合关系和内稳性特征，明晰各混交群落C、N、P养分再吸收率和利用率。

【结果】

1）各混交群落C含量在根中最低，N、P含量在叶中最高。碳氮比（C/N）在叶中最低，碳磷比（C/P）在枝中最高，氮磷比（N/P）在根中最低。2种灌木混交群落植物P含量低于2种乔木混交群落，而C/P、N/P高于乔木混交群落。2）针阔混交群落凋落物C/N显著高于高山灌木混交群落（F=7.72，P<0.05）。3）2种乔木混交群落土壤C、C/P（F=33.44，P<0.05；F=47.64，P<0.05）以及针叶混交群落土壤N、N/P（F=17.76，P<0.05；F=55.00，P<0.05）均显著高于2种灌木混交群落。4）植物各器官、凋落物、土壤的P含量两两之间均呈显著正相关（P<0.05）。坡位和坡向对各组分生态化学计量特征的影响较大。叶、枝、根的P、C/P、N/P均为敏感型。5）2种乔木混交群落的N、P再吸收率高于2种灌木混交群落。各混交群落P的养分利用率高于N和C。

【结论】

2种灌木混交群落的生长主要受P元素限制，而2种乔木混交群落的生长主要受N元素限制。P元素在各组分间联系紧密，且利用率较高。

关键词

生态化学计量特征 / 混交群落 / 内稳性 / 养分再吸收率与利用率 / 宁夏罗山

Abstract

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【Objective】

This study investigated the ecological stoichiometric characteristics of the plant-litter-soil continuum, as well as nutrient resorption and utilization efficiency, in mixed communities of Luo mountain, Ningxia, to reveal the nutrient allocation and utilization strategies, and to provide a scientific foundation for vegetation protection and sustainable management in this region.

【Method】

Four typical mixed communities were investigated: mixed alpine shrub community, mixed low-mountain shrub community, mixed coniferous community and mixed conifer-broadleaf community. This study systematically analyzed the differences in C, N, P contents, and stoichiometric ratios across plant organs, litter and soil. It quantified their coupling relationships, homeostasis, resorption and utilization efficiencies of C, N, and P nutrients.

【Result】

1) Across all communities, the C content was lowest in roots, while the N and P contents were the highest in leaves. The C/N was the lowest in leaves; The C/P was the highest in branches; And the N/P was the lowest in roots. In addition, the plant P content was lower in the two shrub mixed communities compared to the two tree mixed communities, while the C/P and N/P were higher; 2) The litter C/N of the mixed conifer-broadleaf community was significantly higher than that in the mixed alpine shrub community (F=7.72, P<0.05); 3) Soil C and C/P (F=33.44, P<0.05; F=47.64, P<0.05) in the two mixed tree communities, and soil N and N/P (F=17.76, P<0.05; F=55.00, P<0.05) in the mixed coniferous community were all significantly higher than in the two mixed shrub communities; 4) Significant positive correlations were found in P content across plant organs, litter, and soil (P<0.05). Position and aspect significantly influenced ecological stoichiometric characteristics. The homeostasis of P, C/P, and N/P in leaves, branches, and roots was found to be sensitive; 5) The N and P reabsorption efficiency was stronger in the two mixed tree communities compared to the two mixed shrub communities. The nutrient utilization efficiency of P was higher than that of N and C across all communities.

【Conclusion】

Plant growth in mixed shrub communities was P-limited, while mixed tree communities were N-limited. P exhibited strong interconnections among components and higher utilization efficiency.

Key words

ecological stoichiometric characteristics / mixed communities / homeostasis / nutrient resorption and utilization efficiency / Luo mountain in Ningxia

引用本文

杨盈盈, 杨天宇, 郭邵华, 刘芳妤, 曹兵, 杨君珑, 徐雪蕾. 宁夏罗山4种混交群落植物-凋落物-土壤生态化学计量特征. 中南林业科技大学学报, 2026 , 46 (5) : 137 -148 . DOI: 10.14067/j.cnki.1673-923x.2026.05.014

Yingying YANG, Tianyu YANG, Shaohua GUO, Fangyu LIU, Bing CAO, Junlong YANG, Xuelei XU. Ecological stoichiometric characteristics of plant-litter-soil continuum in four mixed communities on Luo mountain, Ningxia[J]. Journal of Central South University of Forestry & Technology, 2026 , 46 (5) : 137 -148 . DOI: 10.14067/j.cnki.1673-923x.2026.05.014

基金

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国家自然科学基金项目(32260421)
宁夏青年科技托举人才培养项目

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2026年第46卷第5期

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doi: 10.14067/j.cnki.1673-923x.2026.05.014

接收时间：2025-05-09
首发时间：2026-10-30
出版时间：2026-05-25

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收稿日期：2025-05-09
修回日期：2025-07-08

基金

国家自然科学基金项目(32260421)

宁夏青年科技托举人才培养项目

作者信息

^1.宁夏大学　a. 林业与草业学院；b. 林木资源高效生产全国重点实验室，宁夏　银川　750021

^2.宁夏沙坡头国家级自然保护区管理局，宁夏　中卫　755000

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徐雪蕾（xuxuelei@nxu.edu.cn），副教授，博士，硕士研究生导师。

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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