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应用生态学报 ›› 2025, Vol. 36 ›› Issue (1): 31-38.doi: 10.13287/j.1001-9332.202501.002

• 研究报告 • 上一篇    下一篇

荒漠植物狭叶锦鸡儿不同地理居群叶片化学计量特征及其影响因子

陈文燕1,2,3, 张雪1,2,3*, 王奕璇1,2,3, 李静尧4, 白小红1,2,3, 王磊1,2,3, 曲文杰1,2,3   

  1. 1宁夏大学生态环境学院, 银川 750021;
    2西北土地退化与生态恢复国家重点实验室培育基地, 银川 750021;
    3西北退化生态系统恢复与重建教育部重点实验室, 银川 750021;
    4宁夏贺兰山国家级自然保护区管理局, 银川 750021
  • 收稿日期:2024-05-15 修回日期:2024-08-26 出版日期:2025-01-18 发布日期:2025-07-18
  • 通讯作者: *E-mail: zhxue@nxu.edu.cn
  • 作者简介:陈文燕, 女, 1998年生, 硕士研究生。主要从事荒漠植物根际微生物研究。E-mail: c2917608452@163.com
  • 基金资助:
    国家自然科学基金青年项目(32100307)和宁夏自然科学基金项目(2020AAC03108)

Leaf C:N:P stoichiometry and influencing factors of different geographic populations of Caragana stenophylla in desert

CHEN Wenyan1,2,3, ZHANG Xue1,2,3*, WANG Yixuan1,2,3, LI Jingyao4, BAI Xiaohong1,2,3, WANG Lei1,2,3, QU Wenjie1,2,3   

  1. 1School of Ecology and Environment, Ningxia University, Yinchuan 750021, China;
    2Breeding Base for Sate Key Laboratory of Land Degradation and Ecological Restoration in Northwestern China, Yinchuan 750021, China;
    3Key Laboratory for Restoration and Reconstruction of Degraded Ecosystems in Northwes-tern China of Ministry of Education, Yinchuan 750021, China;
    4Helan Mountain National Nature Reserve Administration of Ningxia, Yinchuan 750021, China
  • Received:2024-05-15 Revised:2024-08-26 Online:2025-01-18 Published:2025-07-18

摘要: 为探究荒漠植物叶片化学计量学特征及其影响因子,本研究以荒漠植物狭叶锦鸡儿16个不同地理分布居群为研究对象,分析其叶片化学计量特征与环境因子之间的关系。结果表明: 狭叶锦鸡儿各居群叶片C、N、P含量均值分别为407.72、34.21、1.98 g·kg-1,变异系数分别为5.9%、24.2%、34.8%;C∶N、C∶P、N∶P均值分别为13.0、223.8、19.6,变异系数分别为37.1%、26.2%、38.8%,植物生长受P制约;狭叶锦鸡儿各居群土壤C、N、P含量均较低,分别为7.97、0.89、0.38 g·kg-1,变异系数分别为71.3%、70.1%、39.9%;C∶N、C∶P、N∶P均值分别为9.0、22.7、2.5,变异系数分别为28.6%、77.8%、72.7%;土壤EC值、速效磷、pH值和P含量与叶片C含量、C∶N、P含量呈显著正相关,与叶片N含量、C∶P、N∶P呈显著负相关。荒漠植物狭叶锦鸡儿生长除主要受到自身叶片P含量的限制外,与其土壤EC值、速效磷、pH值和P含量也密切相关。

关键词: 荒漠植物, 狭叶锦鸡儿, 化学计量特征, 环境变化

Abstract: To investigate the stoichiometric characteristics of leaves in desert plants and the influencing factors, we analyzed the relationship between leaf stoichiometry and environmental factors of 16 different geographic populations of Caragana stenophylla. The results showed that the mean C, N, and P contents in the leaves of C. stenophylla were 407.72, 34.21, and 1.98 g·kg-1, with coefficients of variation of 5.9%, 24.2%, and 34.8%, respectively. The mean of C:N, C:P, and N:P were 13.0, 223.8, and 19.6, with coefficients of variation of 37.1%, 26.2%, and 38.8%, respectively, indicating that plant growth was primarily constrained by P. Soil C, N, and P contents across C. stenophylla populations were relatively low, at 7.97, 0.89, and 0.38 g·kg-1, respectively, with coefficients of variation of 71.3%, 70.1%, and 39.9%, respectively. The mean C:N, C:P, and N:P were 9.0, 22.7, and 2.5, with coefficients of variation of 28.6%, 77.8%, and 72.7%, respectively. There were significantly positive correlations between soil EC, available P, pH, P content and leaf C content, C:N, and P content, while significant negative correlations with leaf N content, C:P, and N:P. In summary, the growth of C. stenophylla was not only primarily limited by plant P content, but was also closely related to soil EC, available P, pH, and P content.

Key words: desert plant, Caragana stenophylla, stoichiometric characteristic, environmental change