中南林业科技大学学报

红锥人工林养分重吸收和化学计量对氮添加的短期响应

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舒韦维 ¹^,² , 杨坤 ¹ , 马俊旭 ¹ , 闵惠琳 ¹ , 李武志 ¹ , 许基煌 ¹

中南林业科技大学学报 | 生态学 2026,46(10): 146-155

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中南林业科技大学学报 |生态学 2026 , 46 (10) : 146 -155

红锥人工林养分重吸收和化学计量对氮添加的短期响应

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舒韦维¹^,², 杨坤¹, 马俊旭¹, 闵惠琳¹, 李武志¹, 许基煌¹

作者信息

^1.中国林业科学研究院热带林业实验中心，广西　凭祥　532600

^2.广西友谊关森林生态系统定位观测研究站/崇左凭祥友谊关森林生态系统广西野外科学观测研究站，广西　凭祥　532600

通讯作者:

许基煌（xjhsoso@163.com），高级工程师。

作者简介:

舒韦维（shuweiwei_@outlook.com），工程师。

Short-term responses of nutrient resorption and stoichiometry to nitrogen addition in Castanopsis hystrix plantation

Weiwei Shu¹^,², Kun Yang¹, Junxu Ma¹, Huilin Min¹, Wuzhi Li¹, Jihuang Xu¹

Affiliations

^1.Experimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, Guangxi, China

^2.Guangxi Youyiguan Forest Ecosystem Observation and Research Station/Youyiguan Forest Ecosystem Observation and Research Station of Guangxi, Pingxiang 532600, Guangxi, China

出版时间: 2026-10-25 doi: 10.14067/j.cnki.1673-923x.2026.10.013

文章导航

摘要

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【目的】

植物从衰老组织中重新吸收养分被认为是其适应养分缺乏的一种策略。然而，养分重吸收如何调节植物体内养分元素的平衡仍不清楚，特别是在土壤氮有效性增加的情况下。

【方法】

研究不同氮添加条件下（对照CK，0 kg·hm^-2·a^-1、低氮LN，50 kg·hm^-2·a^-1、中氮MN，100 kg·hm^-2·a^-1、高氮HN，150 kg·hm^-2·a^-1），南亚热带红锥Castanopsis hystrix人工林绿叶和衰老叶中N、P、K、Ca、Mg含量和土壤养分含量的变化，以及养分重吸收效率及其化学计量比的总体规律和主要驱动因素。

【结果】

HN处理显著提高了土壤可溶性无机氮（DIN）含量，导致土壤DOC∶DIN显著降低，DIN∶AP显著升高（P<0.05），说明长期高氮输入会加剧土壤磷限制。氮添加条件下绿叶和衰老叶的N、P、Ca、Mg浓度均呈上升趋势。MN、HN显著提高了绿叶TN含量，MN显著提高TP含量，LN、HN显著增加Ca含量；LN、MN、HN显著提高了衰老叶TN含量，HN显著提高Ca含量。LN、MN、HN显著降低了氮重吸收效率（NRE）；磷重吸收效率（PRE）仅在LN处理下显著降低，氮添加对K、Ca、Mg重吸收效率（KRE、CaRE、MgRE）均无显著影响。此外，衰老叶养分含量与重吸收效率呈显著负相关，表明红锥养分重吸收效率主要受衰老叶养分的调控。

【结论】

研究结果可为南亚热带红锥人工林养分管理及氮沉降背景下的生态适应性策略提供理论依据。

关键词

养分重吸收效率 / 氮添加 / 化学计量 / 红锥人工林 / 绿叶养分

Abstract

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【Objective】

Nutrient resorption from senescing tissues is recognized as a strategy for plants to adapt to nutrient deficiency. However, how nutrient resorption regulates the balance of nutrient elements within plants remains unclear, particularly under conditions of increased soil nitrogen availability.

【Method】

This study investigated the changes in nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) content in green and senescent leaves, as well as soil nutrient contents, in a subtropical Castanopsis hystrix plantation under different N addition treatments (Control, CK: 0 kg·hm^-2·a^-1; Low N, LN: 50 kg·hm^-2·a^-1; Medium N, MN: 100 kg·hm^-2·a^-1; High N, HN: 150 kg·hm^-2·a^-1). The overall patterns and main drivers of nutrient resorption efficiency and its stoichiometric ratios were also examined.

【Result】

The results showed that the HN treatment significantly increased soil dissolved inorganic N (DIN) content, leading to a significant decrease in soil DOC∶DIN and a significant increase in soil DIN∶AP (P<0.05), indicating that long-term high N input exacerbates soil P limitation. Under N addition, the concentrations of N, P, Ca, and Mg in both green and senescent leaves showed an increasing trend. MN and HN significantly increased green leaf total N (TN) content; MN significantly increased green leaf total P (TP) content; LN and HN significantly increased green leaf Ca content. LN, MN, and HN significantly increased senescent leaf TN content; HN significantly increased senescent leaf Ca content. LN, MN, and HN significantly decreased nitrogen resorption efficiency (NRE); phosphorus resorption efficiency (PRE) was significantly reduced only under the LN treatment. N addition had no significant effect on potassium, calcium, or magnesium resorption efficiency (KRE, CaRE, MgRE). Furthermore, senescent leaf nutrient content was significantly negatively correlated with resorption efficiency, indicating that nutrient resorption in C. hystrix is primarily regulated by senescent leaf nutrient status.

【Conclusion】

Our findings provide a theoretical basis for nutrient management in subtropical C. hystrix plantations and for understanding ecological adaptation strategies under nitrogen deposition.

Key words

nutrient resorption efficiency / N addition / stoichiometry / Castanopsis hystrix plantation / green leaf nutrients

引用本文

舒韦维, 杨坤, 马俊旭, 闵惠琳, 李武志, 许基煌. 红锥人工林养分重吸收和化学计量对氮添加的短期响应. 中南林业科技大学学报, 2026 , 46 (10) : 146 -155 . DOI: 10.14067/j.cnki.1673-923x.2026.10.013

Weiwei Shu, Kun Yang, Junxu Ma, Huilin Min, Wuzhi Li, Jihuang Xu. Short-term responses of nutrient resorption and stoichiometry to nitrogen addition in Castanopsis hystrix plantation[J]. Journal of Central South University of Forestry & Technology, 2026 , 46 (10) : 146 -155 . DOI: 10.14067/j.cnki.1673-923x.2026.10.013

基金

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国家重点研发计划项目(2023YFE0105100-1)
广西壮族自治区自然科学基金项目(2023GXNSFBA026143)

参考文献

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文献

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参考文献引证文献

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2026年第46卷第10期

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doi: 10.14067/j.cnki.1673-923x.2026.10.013

接收时间：2025-09-27
首发时间：2026-10-30
出版时间：2026-10-25

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出版历史

收稿日期：2025-09-27
修回日期：2025-11-30

基金

国家重点研发计划项目(2023YFE0105100-1)

广西壮族自治区自然科学基金项目(2023GXNSFBA026143)

作者信息

^1.中国林业科学研究院热带林业实验中心，广西　凭祥　532600

^2.广西友谊关森林生态系统定位观测研究站/崇左凭祥友谊关森林生态系统广西野外科学观测研究站，广西　凭祥　532600

通讯作者:

许基煌（xjhsoso@163.com），高级工程师。

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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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