生态学杂志2025，Vol.44Issue(12)：3898-3905,8.DOI:10.13292/j.1000-4890.202512.031
碳添加对入侵互花米草生物量和根、叶形态性状的影响
Effect of carbon addition on biomass and root and leaf morphological traits of Spartina alterniflora
摘要
Abstract
Elevated nitrogen levels in the environment enhance the adaptability and invasive ability of Spartina al-terniflora.However,there is limited research on reducing soil nitrogen content by carbon addition to control Sparti-na alterniflora.In this study,under simulated tidal conditions,we used carbon addition to reduce available soil ni-trogen.We set up an experiment with two types of carbon sources(glucose and sodium acetate),two carbon addi-tion levels(400 and 800 g C·m-2),and a control(CK)to analyze the effects of carbon addition on S.alterniflora biomass and root and leaf morphological traits.The results showed that carbon addition significantly decreased soil nitrate nitrogen and the biomass of roots,stems,and leaves of S.alterniflora(P＜0.05).When the rate of carbon addition reached 800 g C·m-2,it significantly reduced lateral root length,adventitious root length,root surface area,specific root length,leaf length,leaf width,leaf perimeter,leaf area,and specific leaf area,and significant-ly increased the ratio of lateral root length to adventitious root length and root tissue density(P＜0.05).However,carbon addition treatments had no significant effect on stem-to-leaf ratio and leaf length-width ratio of S.alterniflora(P＞0.05).S.alterniflora biomass was significantly negatively correlated with carbon addition level,while root tis-sue density and the ratio of lateral root length to adventitious root length were significantly positively correlated with carbon addition level(P＜0.05).Overall,carbon addition reduced soil nitrate nitrogen content and significantly in-hibited the biomass of S.alterniflora as well as the biomass of roots and leaves.Our findings could contribute to pre-dicting the response of invasive plants to nutrient management measures and provide new insights for the manage-ment of invasive S.alterniflora.关键词
互花米草/碳添加/硝态氮/根形态性状/叶形态性状/生物量Key words
Spartina alterniflora/carbon addition/nitrate nitrogen/root morphological trait/leaf morphological trait/biomass引用本文复制引用
陈昊,辛琨,熊燕梅,钱威,曾书军,李泽瑞,艾熙航,张迪娜,胡凯杰..碳添加对入侵互花米草生物量和根、叶形态性状的影响[J].生态学杂志,2025,44(12):3898-3905,8.基金项目
国家林业和草原局应急揭榜挂帅项目(202302)资助. （202302）
