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中国农学通报 ›› 2026, Vol. 42 ›› Issue (15): 119-128.doi: 10.11924/j.issn.1000-6850.casb2026-0041

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

呼伦贝尔草原6种不同植物群落与土壤耦合特征

张俊青1(), 吴少阳2, 张艳2, 侯健2, 吴海龙1()   

  1. 1 天津理工大学环境科学与安全工程学院, 天津 300384
    2 北京林业大学水土保持学院, 北京 100083
  • 收稿日期:2026-01-20 修回日期:2026-03-24 出版日期:2026-08-15 发布日期:2026-08-13
  • 通讯作者:
    吴海龙,男,1986年出生,重庆人,副教授,博士,主要从事水土保持和生态修复研究。通信地址:300384 天津理工大学环境科学与安全工程学院,Tel:022-60214184,E-mail:
  • 作者简介:

    张俊青,男,1999年出生,天津人,硕士,研究方向:水土保持和生态修复。通信地址:300384 天津理工大学环境科学与安全工程学院,Tel:022-60214184,E-mail:

  • 基金资助:
    内蒙古自治区科技计划项目“内蒙古东部草原废弃矿区生态修复技术研发与应用示范”(2023YFDZ0025)

Coupling Characteristics of 6 Different Plant Communities and Soil in Hulunbuir Grassland

ZHANG Junqing1(), WU Shaoyang2, ZHANG Yan2, HOU Jian2, WU Hailong1()   

  1. 1 School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384
    2 College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083
  • Received:2026-01-20 Revised:2026-03-24 Published:2026-08-15 Online:2026-08-13

摘要:

呼伦贝尔草原受矿区扰动、气候、放牧等因素影响处于退化现状,其植被恢复与土壤改良过程密切相关,为揭示不同优势植物群落与土壤环境的耦合机制。本研究选取隐子草(Cleistogenes chinensis)、莓叶委陵菜(Potentilla fragarioides)、苔草(Carex tristachya Thunb)、羊草(Leymus chinensis)、野豌豆(Vicia sepium)和委陵菜(Potentilla chinensis Ser)6种不同群落,构建植被(7项指标)与土壤(6项指标)的综合评价体系,采用AHP与熵权法确定权重,并利用耦合协调度模型进行定量分析。结果表明:(1)不同群落在植株平均高、盖度、生物量及多样性指数上差异显著(P<0.05),苔草群落多样性最高,野豌豆群落覆盖度与生物量最大;(2)土壤含水率、养分含量及理化性质在不同群落间存在显著差异;(3)植物-土壤系统耦合协调度为0.697~0.956,总体表现为良好协调,其中羊草与隐子草群落达到优质同步协调,而苔草与野豌豆群落表现为土壤滞后型协调。综上,植被类型显著调控土壤水分与养分动态,而土壤特性反过来塑造群落结构。隐子草与羊草群落在植被-土壤耦合中优势明显,可作为东部草原矿区生态恢复的优选物种。

关键词: 草原生态系统, 植物群落特征, 土壤理化性质, 耦合特性

Abstract:

The Hulunbuir grassland is currently in a state of degradation due to disturbances from mining areas, climate, grazing and other factors, and its vegetation recovery is closely related to soil improvement processes. This study aims to reveal the coupling mechanism between dominant plant communities and the soil environment. 6 typical plant communities, including Cleistogenes chinensis, Potentilla fragarioides, Carex tristachya Thunb., Leymus chinensis, Vicia sepium and Potentilla chinensis Ser, were selected. A comprehensive evaluation system comprising 7 vegetation indices and 6 soil indices was constructed. The analytic hierarchy process and entropy-weight method were combined to assign weights, and a coupling-coordination model was applied for quantitative analysis. The results showed that: (1) communities differed significantly (P<0.05) in mean height, coverage, biomass and diversity indices; Carex tristachya Thunb showed the highest diversity, whereas Vicia sepium achieved the greatest coverage and biomass; (2) soil moisture, nutrient contents and physicochemical properties varied markedly among communities; (3) the plant-soil coupling-coordination degree ranged from 0.697 to 0.956, indicating an overall good coordination; Leymus chinensis and Cleistogenes chinensis reached premium synchronous coordination, whereas Carex tristachya Thunb and Vicia sepium exhibited soil-lagged coordination. In conclusion, vegetation type strongly modulates soil moisture and nutrient dynamics, while soil properties in turn shape community structure. Cleistogenes chinensis and Vicia sepium demonstrates superior plant-soil coupling performance and are recommended as priority species for ecological restoration of mining-affected grasslands in eastern Inner Mongolia.

Key words: grassland ecosystem, plant community characteristics, soil physical and chemical properties, coupling characteristics

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