Integrative Biology Journals

Plant Diversity ›› 2026, Vol. 48 ›› Issue (02): 373-380.DOI: 10.1016/j.pld.2025.12.009

• Articles • Previous Articles     Next Articles

The context dependency of nitrogen deposition impacts on the compositional coupling between aboveground vegetation and soil seed bank

Niwu Tea,b,c, Wen-Tao Luoa, Péter Törökd,e,f, Xiao-Ru Zhanga,b, Xiao-Sa Lianga, Yuan-Xiu Wua,b, Xiao-Jing Zhanga,b, Anke Jentschc, Xiao-Tao Lüa   

  1. a. Erguna Forest-Steppe Ecotone Research Station, CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    b. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100081, China;
    c. Disturbance Ecology and Vegetation Dynamics, University of Bayreuth, Bayreuth 95447, Germany;
    d. Department of Ecology, University of Debrecen, Debrecen 4032, Hungary;
    e. HUN-REN-UD Functional and Restoration Ecology Research Group, Debrecen 4032, Hungary;
    f. Polish Academy of Sciences, Botanical Garden - Centre for Biological Diversity Conservation in Powsin, Warszawa 02-973, Poland
  • Received:2025-09-17 Revised:2025-12-13 Online:2026-05-19 Published:2026-03-25
  • Contact: Xiao-Tao Lü,E-mail:lvxiaotao@iae.ac.cn
  • Supported by:
    We appreciate the logistical support from the National Field Observation and Research Station of Shenyang Agro-ecosystems and the constructive comments and suggestions from three anonymous reviewers. This study was supported by the National Key Research and Development Program of China (2023YFD1301702), Natural Science Foundation of China (32171543 and 32422057), and the China Scholarship Council joint Ph.D. program. PT was supported by the National Research, Development and Innovation Office [KKP144068 and K137573] during the manuscript preparation.

The context dependency of nitrogen deposition impacts on the compositional coupling between aboveground vegetation and soil seed bank

Niwu Tea,b,c, Wen-Tao Luoa, Péter Törökd,e,f, Xiao-Ru Zhanga,b, Xiao-Sa Lianga, Yuan-Xiu Wua,b, Xiao-Jing Zhanga,b, Anke Jentschc, Xiao-Tao Lüa   

  1. a. Erguna Forest-Steppe Ecotone Research Station, CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    b. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100081, China;
    c. Disturbance Ecology and Vegetation Dynamics, University of Bayreuth, Bayreuth 95447, Germany;
    d. Department of Ecology, University of Debrecen, Debrecen 4032, Hungary;
    e. HUN-REN-UD Functional and Restoration Ecology Research Group, Debrecen 4032, Hungary;
    f. Polish Academy of Sciences, Botanical Garden - Centre for Biological Diversity Conservation in Powsin, Warszawa 02-973, Poland
  • 通讯作者: Xiao-Tao Lü,E-mail:lvxiaotao@iae.ac.cn
  • 基金资助:
    We appreciate the logistical support from the National Field Observation and Research Station of Shenyang Agro-ecosystems and the constructive comments and suggestions from three anonymous reviewers. This study was supported by the National Key Research and Development Program of China (2023YFD1301702), Natural Science Foundation of China (32171543 and 32422057), and the China Scholarship Council joint Ph.D. program. PT was supported by the National Research, Development and Innovation Office [KKP144068 and K137573] during the manuscript preparation.

Abstract: The compositional coupling between aboveground vegetation and soil seed bank is critical for community stability and successional trajectories, but such relationships are highly sensitive to environmental changes. Although nitrogen (N) deposition has been reported to decouple the associations between aboveground vegetation and the soil seed bank in grasslands, it remains unclear whether and how grassland management practices, such as mowing, mediate N deposition effects. We evaluated the impacts of N input and mowing on the diversity and composition of the aboveground vegetation and soil seed bank, as well as their compositional coupling in a decadal grassland experiment. N addition increased the compositional dissimilarity between the soil seed bank and aboveground vegetation by increasing abundance gradient, but only in unmown plots. N addition did not affect the compositional dissimilarity between aboveground vegetation and the soil seed bank in mown plots. Mowing increased the graminoid abundance in the aboveground vegetation, but increased the forb abundance in the soil seed bank, and thus increased the compositional dissimilarity between aboveground vegetation and the soil seed bank by promoting balanced variation in abundance. Our results reveal the importance of context dependence in the consequences of N inputs on the compositional coupling between aboveground vegetation and the soil seed bank in grasslands. The land-use context should be fully considered when evaluating the impacts of global change drivers on grassland community dynamics and succession.

Key words: Compositional coupling, Grassland management, Hay harvest, Nitrogen enrichment, Soil seed bank, Temperate steppe

摘要: The compositional coupling between aboveground vegetation and soil seed bank is critical for community stability and successional trajectories, but such relationships are highly sensitive to environmental changes. Although nitrogen (N) deposition has been reported to decouple the associations between aboveground vegetation and the soil seed bank in grasslands, it remains unclear whether and how grassland management practices, such as mowing, mediate N deposition effects. We evaluated the impacts of N input and mowing on the diversity and composition of the aboveground vegetation and soil seed bank, as well as their compositional coupling in a decadal grassland experiment. N addition increased the compositional dissimilarity between the soil seed bank and aboveground vegetation by increasing abundance gradient, but only in unmown plots. N addition did not affect the compositional dissimilarity between aboveground vegetation and the soil seed bank in mown plots. Mowing increased the graminoid abundance in the aboveground vegetation, but increased the forb abundance in the soil seed bank, and thus increased the compositional dissimilarity between aboveground vegetation and the soil seed bank by promoting balanced variation in abundance. Our results reveal the importance of context dependence in the consequences of N inputs on the compositional coupling between aboveground vegetation and the soil seed bank in grasslands. The land-use context should be fully considered when evaluating the impacts of global change drivers on grassland community dynamics and succession.

关键词: Compositional coupling, Grassland management, Hay harvest, Nitrogen enrichment, Soil seed bank, Temperate steppe