植食性害虫危害对塔里木河上游胡杨林叶片-凋落物-土壤化学计量特征的影响

doi:10.13292/j.1000-4890.202608.025

生态学杂志 ›› 2026, Vol. 45 ›› Issue (10): 3410-3418.doi: 10.13292/j.1000-4890.202608.025

植食性害虫危害对塔里木河上游胡杨林叶片-凋落物-土壤化学计量特征的影响

王生龙^1,2，刘慧芳^1,2，裴昊^1,2，JASHENKO Roman³，季荣^1,2，王晗^1,2*

（¹中亚区域跨境有害生物联合控制国际研究中心，新疆特殊环境物种保护与调控生物学实验室，新疆师范大学生命科学学院，乌鲁木齐 830017； ²塔城昆虫迁飞生物学新疆野外科学观测研究站，新疆塔城 834700； ³哈萨克斯坦共和国教育和科学部动物研究所，阿拉木图 050060，哈萨克斯坦）

出版日期:2026-10-10 发布日期:2027-04-12

Impact of herbivorous pests on the stoichiometric characteristics of fresh leaf-litter-soil in Populus euphratica forests of the upper reaches of Tarim River Basin.

WANG Shenglong^1,2, LIU Huifang^1,2, PEI Hao^1,2, JASHENKO Roman³, JI Rong^1,2, WANG Han^1,2*

(¹International Research Center of CrossBorder Pest Management in Central Asia, Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Sciences, Xinjiang Normal University, Urumqi 830017, China; ²Tacheng Research Field (Migratory Biology) Observation and Research Station of Xinjiang, Tacheng 834700, Xinjiang, China; ³Zoology Institute of Ministry of Education and Science of the Republic of Kazakhstan, Almaty 050060, Kazakhstan).

Online:2026-10-10 Published:2027-04-12

摘要/Abstract

摘要： 塔里木河流域胡杨林虫害问题突出，探讨虫害胁迫下胡杨林生态系统化学计量特征，以揭示害虫干扰的生态效应机制，指导脆弱生态系统的精准管理与恢复。本研究以塔里木河流域胡杨林为对象，选取4种害虫危害程度（无、轻度、中度、重度）的胡杨林样地，测定叶片、凋落物及土壤样品C、N、P、K、Ca、Mg含量及化学计量比，采用多元方差分析、Spearman相关分析和主成分分析，分析不同害虫危害程度对胡杨叶片、凋落物与土壤的化学计量特征的影响。结果表明：（1）虫害胁迫导致凋落物N、Ca含量显著增加（P<0.001），C∶N显著降低（P<0.01）；土壤N含量、N∶P显著降低（P<0.01），C∶N显著增加（P<0.01）。（2）各组分间化学计量相关性分析显示，对照组叶片-凋落物、叶片-土壤、凋落物-土壤之间分别有15、11和22对显著相关，而害虫危害组显著相关性明显减少，分别为8、3、0对。（3）害虫危害是驱动叶片-凋落物-土壤化学计量协同变异的主要因素，其中凋落物C∶P贡献度最大，为13.6%。虫害胁迫改变了凋落物和土壤养分化学计量特征，削弱了叶片-凋落物-土壤之间的元素协同关系，进而影响养分循环过程。

关键词:

塔里木河流域, 胡杨林, 害虫危害, 化学计量

Abstract:

To address the prominent pest problem in Populus euphratica forests of the Tarim River Basin, we investigated the stoichiometric characteristics of forests under pest stress. The main aim was to elucidate the ecological effects of pest disturbance and provide a scientific basis for precise management and restoration of this vulnerable ecosystem. Plots of P. euphratica forests were selected based on four levels of pest damage (none, light, moderate, and heavy). The concentrations and stoichiometric ratios of C, N, P, K, Ca, and Mg were determined in leaf, litter, and soil samples. Multivariate analysis of variance (MANOVA), Spearman correlation analysis, and principal com〖HJ*4〗ponent analysis (PCA) were employed to assess the impacts of different pest damage levels on the stoichiometric traits of leaf, litter, and soil. The results showed that: (1) Under pest stress, N and Ca concentrations in litter were significantly increased (P<0.001), while its C∶N ratio was significantly decreased (P<0.01). In contrast, soil N concentration and N∶P ratio were significantly reduced (P<0.01) and soil C∶N ratio was significantly elevated (P<0.01). (2) Stoichiometric correlation analysis among components revealed that there were 15, 11, and 22 significant correlations between leaf-litter, leaf-soil, and litter-soil pairs in the control group, respectively. However, these significant correlations were markedly reduced under pest stress, with only 8, 3, and 0 significant correlations remaining for the respective pairs. (3) Pest damage was a primary factor driving the coordinated variation in leaf-litter-soil stoichiometry, with litter C∶P contributing the most (13.6%) to this variation. Pest stress altered the stoichiometric characteristics of litter and soil nutrients, weakened the elemental interactions among leaf, litter, and soil, and consequently affected nutrient cycling.

Key words: Tarim River Basin, Populus euphratica forest, pest damage, stoichiometry

王生龙, 刘慧芳, 裴昊, JASHENKO Roman, 季荣, 王晗. 植食性害虫危害对塔里木河上游胡杨林叶片-凋落物-土壤化学计量特征的影响[J]. 生态学杂志, 2026, 45(10): 3410-3418.

WANG Shenglong, LIU Huifang, PEI Hao, JASHENKO Roman, JI Rong, WANG Han. Impact of herbivorous pests on the stoichiometric characteristics of fresh leaf-litter-soil in Populus euphratica forests of the upper reaches of Tarim River Basin.[J]. Chinese Journal of Ecology, 2026, 45(10): 3410-3418.

植食性害虫危害对塔里木河上游胡杨林叶片-凋落物-土壤化学计量特征的影响

Impact of herbivorous pests on the stoichiometric characteristics of fresh leaf-litter-soil in Populus euphratica forests of the upper reaches of Tarim River Basin.

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