文献类型：期刊文献

英文题名：Spartina alterniflora-Derived Biochar Alters Biomass Allocation and Root Traits of Native Scirpus mariqueter

作者：Tang, Yaoyao[1] Gao, Jingwen[2] Jiang, Pengcheng[2] Li, Junzhen[2] Wu, Ming[2] Jiao, Shengwu[2] Zhang, Long[2] Li, Niu[2] Shao, Xuexin[2]

第一作者：Tang, Yaoyao

通信作者：Li, N[1];Shao, XX[1]

机构：[1]Zhejiang Agr & Forestry Univ, Coll Forestry & Biotechnol, Hangzhou 311300, Peoples R China;[2]Chinese Acad Forestry, Res Inst Subtrop Forestry, Wetland Ecosyst Res Stn Hangzhou Bay, Hangzhou 311400, Peoples R China

年份：2025

卷号：17

期号：5

外文期刊名：DIVERSITY-BASEL

收录：;Scopus(收录号：2-s2.0-105006574038);WOS:【SCI-EXPANDED(收录号:WOS:001496150400001)】；

基金：This study was supported by the Pioneer and Leading Goose R&D Program of Zhejiang Province (Grant No. 2024C02002); the Zhejiang Province Commonwealth Projects (Grant No. LQ23C030003); the Cooperation Program between Zhejiang Province and the Chinese Academy of Forestry (Grant No. 2023SY11); the Special Fund for Basic Scientific Research Operations of Central Public Welfare Research Institutes (Grant No. CAFYBB2024MA029); the Zhejiang Provincial Science and Technology Program (Grant No. 2023C03120); the Pioneer and Leading Goose R&D Program of Zhejiang Province (Grant Nos. 2025C02050 and 2025C02230); and the National Key Research and Development Program of China (Grant No. 2023YFE0101700).

语种：英文

外文关键词：allochthonous inputs; carbon sequestration; coastal wetlands; invasive species; native halophyte; root morphology

摘要：Coastal wetlands provide vital ecosystem services, yet large-scale removal of invasive Spartina alterniflora disrupts soil carbon pools and fragments habitats. Converting this biomass to biochar may enhance restoration outcomes, though ecological effects remain poorly understood. We evaluated how Spartina alterniflora-derived biochar (0%, 0.5%, 1%, and 3%) influences growth performance, clonal reproduction, root morphology, and rhizosphere properties of native Scirpus mariqueter. Moderate biochar addition (1%) significantly boosted plant performance, increasing total biomass by 64.5%, aboveground biomass by 36.7%, and belowground biomass by 115.0%, while root length increased by 135.8%. Biochar improved soil moisture and nutrient availability, including nitrate nitrogen (NO3(-)-N), ammonium nitrogen (NH4(+)-N), and available phosphorus (AP), while stimulating nitrification and promoting clonal propagation. In contrast, high-dose biochar (3%) elevated soil salinity and electrical conductivity, leading to suppressed plant growth and reproductive allocation. Correlation analysis revealed strong positive associations between root volume and soil nutrient levels. Our findings demonstrate that moderate application of Spartina alterniflora-derived biochar enhances plant productivity and soil function, potentially improving carbon sequestration in restored coastal wetlands. This study provides insights into ecological recycling of invasive biomass and supports biochar as a viable tool for sustainable wetland restoration, though potential risks at high concentrations warrant further investigation.