福建师范大学学报（自然科学版）2026，Vol.42Issue(3)：28-36,9.DOI:10.12046/j.issn.1000-5277.2026020002
滨海湿地互花米草入侵和治理后土壤碳氮磷生态化学计量比及固碳微生物特征
Characteristics of Soil C∶N∶P Ecological Stoichiometry and Carbon-Sequestering Microorganisms Following Spartina alterniflora Invasion and Control in Coastal Wetlands
摘要
Abstract
Spartina alterniflora invasion poses a threat to the ecological security of coastal wet-lands.By taking bare tidal flats,S.alterniflora-invaded wetland,and restored mangrove wetland after S.alterniflora control as research objects,this study explored the impacts of soil carbon(C),nitrogen(N),and phosphorus(P)and their stoichiometric ratios on soil carbon-sequestering microorganisms in typical coastal wetlands of Fujian Province.The results showed that:S.alterniflora invasion signifi-cantly increased soil organic carbon(SOC)content,C∶P ratio,and N∶P ratio by 15.30%,27.68%,and 23.87%,respectively(P<0.05).Compared with the S.alterniflora-invaded wetland,the soil C∶N∶P stoichiometric ratios in the mangrove wetland after restoration showed a further in-crease.Pseudomonadota was the dominant phylum of carbon-sequestering microorganisms across all habitats.At the genus level,Hyphomicrobium was the dominant genus in both bare tidal flat and S.alterniflora-invaded wetlands,while Herbaspirillum was the dominant genus in mangrove wetlands after restoration.Soil C,N,and P contents and their stoichiometric ratios exerted significant habitat-specific regulatory effects on the dominant carbon-sequestering genera,while carbon and nutrient conditions showed a selective screening effect on the community structure of carbon-sequestering mi-croorganisms.关键词
互花米草入侵/碳氮磷/生态化学计量比/固碳微生物/滨海湿地Key words
Spartina alterniflora invasion/C,N,P/ecological stoichiomety/carbon-sequeste-ring microorganisms/coastal wetlands分类
生物科学引用本文复制引用
王霖,廖亦阳,杨柳明,陈骏马,王维奇..滨海湿地互花米草入侵和治理后土壤碳氮磷生态化学计量比及固碳微生物特征[J].福建师范大学学报（自然科学版）,2026,42(3):28-36,9.基金项目
国家自然科学基金区域创新发展联合基金重点支持项目(U25A20801) （U25A20801）
