草地学报 ›› 2025, Vol. 33 ›› Issue (10): 3307-3317.DOI: 10.11733/j.issn.1007-0435.2025.10.019

• 研究论文 • 上一篇    

退化斑块恢复演替对高寒草甸植被和土壤特征的影响

李成一1,2, 李鑫慧1,2, 柴瑜1,2, 高佩1,2, 李希来1,2   

  1. 1. 青海大学省部共建三江源生态与高原农牧业国家重点实验室, 青海 西宁 810016;
    2. 青海大学农牧学院, 青海 西宁 810016
  • 收稿日期:2024-11-29 修回日期:2025-01-09 发布日期:2025-10-17
  • 通讯作者: 李希来,E-mail:xilai-li@163.com
  • 作者简介:李希来,E-mail:xilai-li@163.com
  • 基金资助:
    国家自然科学基金项目(U21A20191);青海省科学技术厅项目(2023-QY-210);青海大学科研实力提升项目(2025KTSQ11);高等学校学科创新引智计划(D18013)资助

Effects of Restoration and Succession of Degraded Patches on Vegetation and Soil Characteristics of Alpine Meadow

LI Cheng-yi1,2, LI Xin-hui1,2, CHAI Yu1,2, GAO Pei1,2, LI Xi-lai1,2   

  1. 1. State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, Qinghai Province 810016, China;
    2. College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai Province 810016, China
  • Received:2024-11-29 Revised:2025-01-09 Published:2025-10-17

摘要: 为明确退化斑块恢复演替过程中高寒草甸植被和土壤特征的变化规律,本文以黄河源区裸露斑块、短期恢复植物斑块、长期恢复植物斑块和健康高寒草甸为研究对象,分析了退化斑块不同恢复演替阶段下植被与土壤特征及相关性。结果表明:退化斑块恢复演替显著增加了植被碳、氮、磷含量以及植被生物量和物种多样性(P<0.05),该过程也会显著改变土壤含水量、土壤温度、全磷、硝态氮、速效磷、pH值、微生物生物量(P<0.05)。冗余分析进一步揭示硝态氮、土壤含水量、速效磷是影响植被碳、氮、磷含量及物种多样性的主要土壤因子,土壤微生物生物量、硝态氮、pH值、含水量、有机碳是影响植被生物量的主要土壤因子(P<0.05)。说明斑块化退化高寒草甸的快速可持续恢复是非常重要的,研究结果可为退化高寒草甸生态修复提供科学依据。

关键词: 退化斑块, 土壤理化性质, 植被生产力, 物种多样性

Abstract: To clarify the changes of vegetation and soil characteristics of alpine meadows during the restoration and succession processes of degraded patches, this study focused on bare patches, short-term restored vegetation patches, long-term restored vegetation patches, and healthy alpine meadows in the Yellow River source region. The vegetation and soil characteristics, as well as their correlations, were analyzed across different stages of recovery succession in degraded patches. The results showed that recovery succession significantly increased vegetation carbon, nitrogen, and phosphorus content, as well as vegetation biomass and species diversity (P<0.05). This process also significantly altered soil water content, soil temperature, total phosphorus, nitrate nitrogen, available phosphorus, pH and microbial biomass (P<0.05). Redundancy analysis revealed that nitrate nitrogen, soil water content, and available phosphorus were the key soil factors influencing vegetation carbon, nitrogen, phosphorus content, and species diversity, while soil microbial biomass, nitrate nitrogen, pH, soil water content, and organic carbon were the primary soil factors affecting vegetation biomass (P<0.05). These findings highlight the importance of rapid and sustainable recovery of patchily degraded alpine meadows, and the research results could provide scientific basis for ecological restoration of degraded alpine meadows.

Key words: Degraded patches, Soil physicochemical properties, Vegetation productivity, Species diversity

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