泉州湾洛阳江河口湿地土壤肥力质量特征分析  

Study on the Characteristics of Soil Fertility Quality of Estuarine Wetlands in Luoyang River of Quanzhou Bay

作　　者：周贵尧[1,2] 吴沿友[1,3] 张明明[1] 

机构地区：[1]江苏大学现代农业装备与技术教育部重点实验室,江苏镇江212013 [2]复旦大学生物多样性和生态工程教育部重点实验室,上海200433 [3]中国科学院地球化学研究所环境地球化学国家重点实验室,贵州贵阳550002

出　　处：《土壤通报》2015年第5期1138-1144,共7页Chinese Journal of Soil Science

基　　金：国家科技支撑计划专题(2009BADB2B04-03);国家自然基金(31070365);江苏省高校优势学科(苏政办[2014]37号)资助

摘　　要：土壤质量的综合评价是湿地土壤管理的前提,由于土壤评价涉及众多因子,因此,科学浓缩评价信息成为评价湿地健康发展的重要基础。本文以泉州湾洛阳江河口湿地桐花树、秋茄、白骨壤和互花米草等4种红树覆盖下的土壤为研究对象,同时以空地作为参考,选取铵态氮、硝态氮、有效磷以及有效铁、有效锰、有效铜和有效锌等指标,利用主成分分析法分析评估不同植被下土壤肥力质量。结果表明,不同红树植被对土壤肥力质量影响差异明显,互花米草促进土壤营养成分的累积,四种红树植物下土壤肥力质量表现为互花米草>桐花树>白骨壤>秋茄;红树植物种植时间、根系构型、生物量大小以及微环境差异是引起土壤肥力质量分异的主要原因;不同红树植物对土壤无机氮磷和金属有效态的空间分布影响具有明显差异;金属元素相关性分析揭示出该湿地金属元素具有良好的同源特性。本研究可为河口湿地差异性修复提供一定的理论依据。Comprehensive assessment on soil fertility quality was the basis for the management of wetlands. Scientific concentrating the evaluation information became the important foundation to evaluation the healthy development of wetland, due to soil assessment concerning several factors. In this study, soils covered with Aegiceras corniculatum,Kandelia candel, Avicennia marina and Spartina alterniflora were selected as research objectives, meanwhile, soils without vegetations were selected as reference. Ammonium nitrogen, nitrate nitrogen, available phosphorus, available iron, available manganese, available copper and available zinc were chosen as indices to evaluate the influence of different species on soil fertility quality based on the principal component analysis method. Results showed that soil fertility quality varied from species to species and the Spartina alterniflora facilitated the accumulation of soil nutrition.Soil fertility quality of four mangrove species followed the order: Spartina alterniflora > Aegiceras corniculatum >Avicennia marina > Kandelia candel. The difference of soil fertility quality was induced by mangrove species planting time, root system architecture, biomass and microenvironment. The varied mangrove species significantly influenced the distribution of inorganic nitrogen, phosphorus and available metals. Correlation analysis of metal elements revealed that the metal elements of this wetland owned well homologous. This work would provide theoretical basis for differential restoration of estuarine wetlands.

关 键 词：土壤肥力质量 红树林植物 河口湿地 主成分分析 

分 类 号：S158[农业科学—土壤学]