山东科学2024，Vol.37Issue(5)：95-102,8.DOI:10.3976/j.issn.1002-4026.20240048
三种提取态硅在典型滨海湿地中的分布特征及影响因素分析
Distribution patterns and influencing factors of three types of soil extractable silicon in typical coastal wetlands
摘要
Abstract
As the second most abundant element on earth,silicon plays an important role in soil biogeochemical processes.However,the geochemical characteristics of soil silicon in different forms in coastal wetlands still need further investigation.In this study,we selected four typical coastal wetlands(nonflooding Phragmites australis,tidal P.australis,freshwater P.australis,and tidal Suaeda salsa wetlands)as sampling sites and collected soils from 0 to 20 cm depth.Furthermore,we determined oxalate-extractable silicon,dithionite-citrate-extractable silicon,pyrophosphate-extractable silicon and analyzed their soil physical and chemical properties,distribution patterns,and influencing factors in typical coastal wetlands.Results showed that dithionite-citrate-extractable silicon and pyrophosphate-extractable silicon showed no significant differences among four wetlands(p＞0.05),while oxalate-extractable silicon in nonflooding P.australis wetlands was significantly lower than tidal P.australis wetlands(p＜0.05).As for the profile distribution,the three types of extractable silicon in soils from 0 to 10 cm were generally higher than in soils from 10 cm to 20 cm.Additionally,the correlation analysis revealed that soil organic matter,total nitrogen,bulk density,pH,silt and moisture were important factors influencing these three types of extractable silicon.关键词
草酸提取态硅/连二硫酸钠-柠檬酸钠提取态硅/焦磷酸钠提取态硅/地球化学特征/滨海湿地Key words
oxalate-extractable silicon/dithionite-citrate-extractable silicon/pyrophosphate-extractable silicon/geochemical properties/coastal wetlands分类
天文与地球科学引用本文复制引用
季晓晖,赵庆庆,展海银,王加宁,张闻,黄玉杰,宋繁永,魏小兵..三种提取态硅在典型滨海湿地中的分布特征及影响因素分析[J].山东科学,2024,37(5):95-102,8.基金项目
山东省重点研发计划(重大科技创新工程)(2021CXGC011201) （重大科技创新工程）
国家重点研发计划(2023YFC3709004-03) （2023YFC3709004-03）
山东省自然科学基金(ZR2022MD116) （ZR2022MD116）
济南市"高校20条"资助项目(2020GXRC059) （2020GXRC059）
