不同成因盐碱土的理化性质及微生物特性比较

打开文本图片集

中图分类号：S154.3；S153 文献标志码：A 文章编号：1672-2043（2026）01-0139-09 doi：10.11654/jaes.2025-0074

Comparative studyof physicochemical and microbial communities of diferent origins of saline-alkali soil

YANG Huixuan12，WANGYanan2，JIA Yuehui1*，CHENMinyu3，GAO Jinhua4，XIEXueshi4，ZHOULi4，ZENG Xibai²* （1.BeijingUnivesityofgiculture，Beijn26，a;2IstiteofEnoentadustaiableDevelopntinilure ChineseAcademyofAgriculturalienes，Beiing81，hina;3.ChuangxingFutureBiengineering（ijang）CodUri 831399，China; 4. Stanley Agricultural Group Co.，Ltd.，Linshu 2767o0， China）

Abstract：esiateintetaltactestealuityoiia fdiferetorigins，ndtoanalyzeteintrisiccorrelationsamongthesefactors.Thefindingsaimtoprovidefectivesupportforthe managementandremediationofsalin-alkalilands.Soilsampleswerecolectedfroeightdistictsitesacrosstreetypicalsalialkali regionsinXinjiang，Jilin，andHebeiprovinces.Soilnutrientcontentsandbaseiononcentrationswereanalyzed.High-throughput sequencingtechologyasmploedtosesssoilbacteraldiversityadcommunityomposition.ThesliealkalisoilsfromJilin（， JL2）were characterized by predominant base anions of HCO3 with concentrations exceeding 0.5g⋅kg-1 . These soils exhibited relatively highsoilorganicmaterandtotaltrogencontents，withActiobacteriaidentifiedasthedominantmicrobialpyum.Xinjiangsaline alkali soils（XJ1， XJ2， XJ3， XJ4） were dominated by SO base anions and exhibited high Na+ contents，lower microbial abundance and diversity，with Proteobacteriaas the predominant phylum.In Hebei saline-alkali soils，HB1 showed HCO predominance（0.49 g⋅kg-1， ） whileHB2wasdominated by C |-（29.09g⋅kg-1） .Although significant variations inmicrobial community composition were observed，salt contentdidnotsignificantlyafectmicrobialabundanceordiversity.Thecontentofbaseionsdominantmicrobialpopulations，and physicochemicalpropertiesofsaline-alkalisoilsarecloselylinkedtotheirorigins.Microbialdiversitymainlydependsonthe concentrations of Ca2+ Na+ ，and other ions，exhibiting distinct geographic distribution paterns.Thus，regional distribution and diferences inphysicochemicalandbiologicalpropertiesustbetoroughlyconsideredwhendevelopingsaliealkalilandremediationstategs. Keywords：saline-alkali soil; base ions; high-throughput sequencing; community composition

我国盐碱土广泛分布于西北、华北、东北等干旱半干旱地区及沿海地区，总面积约9900万 hm2[1] ，这些地区的盐碱土是重要的后备耕地资源，对现代农业发展具有深远的影响。（剩余17166字）