草地学报 ›› 2026, Vol. 34 ›› Issue (3): 891-904.DOI: 10.11733/j.issn.1007-0435.2026.03.014

• 研究论文 • 上一篇    

盐胁迫下羧甲基纤维素对植被混凝土中狗牙根生理特性的影响

李铭怡1,3,4, 杨毅1,3, 郭士维1,3,4, 耿启明1,3, 贾濠基1,3, 王福豪1,3, 朱祥祥1,3, 刘瑛2, 许文年1,3,4   

  1. 1. 三峡库区地质灾害教育部重点实验室(三峡大学), 湖北 宜昌 443002;
    2. 湖北工业大学河湖智慧健康感知与生态修复教育部重点实验室, 湖北 武汉 430000;
    3. 三峡大学土木与建筑学院, 湖北 宜昌 443002;
    4. 水泥基生态修复技术湖北省工程研究中心(三峡大学), 湖北 宜昌 443002
  • 收稿日期:2025-04-27 修回日期:2025-09-14 发布日期:2026-03-23
  • 通讯作者: 耿启明,E-mail:gengqimingctgu@163.com
  • 作者简介:李铭怡(1988-),女,汉族,河北邯郸人,博士,副教授,主要从事边坡与生态防护研究,E-mail:limingyi@ctgu.edu.cn;
  • 基金资助:
    国家自然科学基金项目(42207544);湖北省教育厅科学技术研究项目(D20231203);三峡库区地质灾害教育部重点实验室开放基金(2023KDZ11);湖北工业大学河湖健康智慧感知与生态修复教育部重点实验室开放研究基金项目(HGKFYB08)资助

Effects of Carboxymethyl Cellulose on the Physiological Characteristics of Cynodon Dactylon under Salt Stress in Vegetation Concrete

LI Ming-yi1,3,4, YANG Yi1,3, GUO Shi-wei1,3,4, GENG Qi-ming1,3, JIA Hao-ji1,3, WANG Fu-hao1,3, ZHU Xiang-xiang1,3, LIU Ying2, XU Wen-nian1,3,4   

  1. 1. Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education(China Three Georges University), Yichang, Hubei Province 443002, China;
    2. Key Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakes, Ministry of Education, Hubei University of Technology, Wuhan, 430000, China;
    3. College of Civil Engineering &Architecture, China Three Gorges University, Yichang, Hubei Province Hubei Province 443002, China;
    4. Hubei Provincial Engineering Research Center of Cement-based Ecological Restoration Technology, China Three Georges University, Yichang, Hubei Province 443002, China
  • Received:2025-04-27 Revised:2025-09-14 Published:2026-03-23

摘要: 为探究羧甲基纤维素(CMC)对盐胁迫下植被混凝土中狗牙根(Cynodon dactylon)生理特性的影响。选择狗牙根为试验材料,通过开展控制性模拟试验,设置正常条件(0 g·kg-1)、轻度盐胁迫(3 g·kg-1)、中度盐胁迫(6 g·kg-1)、重度盐胁迫(9 g·kg-1)四种盐分梯度和0%,0.1%,0.2%,0.4%四种羧甲基纤维素浓度处理,研究羧甲基纤维素对不同盐胁迫程度下狗牙根生理特性的影响。结果表明:随着盐胁迫程度的加剧和胁迫时间的延长,狗牙根生理性能下降;羧甲基纤维素处理能有效提升狗牙根的株高、生物量、净光合速率、蒸腾速率、气孔导度和脯氨酸含量,降低胞间CO2浓度和丙二醛含量,增强狗牙根的耐盐能力。正常盐分、轻度盐胁迫和中度盐胁迫施加0.4%羧甲基纤维素效果最佳,重度盐胁迫施加0.2%羧甲基纤维素效果最佳。

关键词: 盐胁迫, 植被混凝土, 生态修复, 羧甲基纤维素, 生理特性

Abstract: To investigate the effects of Carboxymethyl cellulose (CMC) on the physiological characteristics of Cynodon dactylon under Salt Stress in vegetation concrete, a controlled simulation experiment was conducted. The experiment utilized Cynodon dactylon as the test material, with four salinity gradients [normal salt level (0 g·kg-1), mild Salt Stress (3 g·kg-1), moderate Salt Stress (6 g·kg-1), and severe Salt Stress (9 g·kg-1)] and four CMC concentration treatments (0%, 0.1%, 0.2%, 0.4%),The study examined the impacts of CMC on the physiological characteristics of Cynodon dactylon under varying Salt Stress intensities. The results showed that with the intensification of Salt Stress and the extension of stress duration, the physiological performance of Cynodon dactylon decreased. Carboxymethyl cellulose (CMC) treatment effectively enhanced the plant height, biomass, net photosynthetic rate, transpiration rate, stomatal conductance, and proline content of Cynodon dactylon, reduced the intercellular CO2 concentration and malondialdehyde content ,and enhanced its ability of salt stress. Specifically, under normal salt conditions, mild salt stress, and moderate salt stress, the application of 0.4% CMC yielded the best promoting effect on the growth of Cynodon dactylon; whereas under severe Salt Stress, 0.2% CMC showed the optimal growth-promoting efficacy.

Key words: Salt Stress, Vegetation concrete, Ecological remediation, Carboxymethyl cellulose, Physiological property

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