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土壤圈（英文版）
土壤圈（英文版）

周健民

双月刊

1002-0160

eopedos@issas.ac.cn； pedosphere@issas.ac.cn； rmdu@issas.ac.cn eopedo@issas.ac.cn

025-86881235、86881359

210008

南京市北京东路71号中国科学院南京土壤研究所

土壤圈（英文版）/Journal An International Journal PedosphereCSCDCSTPCD北大核心SCI
查看更多>>《PEDOSPHERE》（土壤圈）是中国出版的土壤学科唯一外文版国际性学术期刊，也是我国土壤学领域唯一的SCI源刊。 主要刊登土壤学领域国内外未曾公开发表的具有坚实科学理论和实验基础与创新的最新高水平科研成果，内容包括土壤化学、土壤物理学、土壤生物与生物化学、土壤肥力与植物营养、土壤环境与生态学、土壤微生物学、土壤地理、水土保持、土壤信息与遥感技术、土壤质量与土壤修复等与生物圈、岩石圈、水圈和大气圈密切关联的土壤科学理论、实验技术及应用的学术研究论文、专题综述、研究简报、书评等。旨在及时传播国内外土壤科学最新成果，促进国际学术交流与合作，推动中国和世界土壤科学事业的发展。
正式出版
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    Global and regional soil organic carbon estimates:Magnitudes and uncertainties

    Ziqi LINYongjiu DAIUmakant MISHRAGuocheng WANG...
    685-698页
    查看更多>>摘要：Globally,soil is the largest terrestrial carbon(C)reservoir.Robust quantification of soil organic C(SOC)stocks in existing global observation-based estimates avails accurate predictions in carbon-climate feedbacks and future climate trends.We investigated the magnitudes and distributions of global and regional SOC estimates(i.e.,density and stocks)based on five widely used global gridded SOC datasets,a regional permafrost dataset developed in 2021(UM2021),and a global-scale soil profile database(World Soil Information Service)reporting measurements of a series of physical and chemical edaphic attributes.The five global gridded SOC datasets were the Harmonized World Soil Database(HWSD),World Inventory of Soil Emission Potentials at 30 arc-second resolution(WISE30sec),Global Soil Dataset for Earth System Models(GSDE),Global Gridded Soil Information at 250-m resolution(SoilGrids250m),and Global Soil Organic Carbon Map(GSOCmap).Our analyses showed that the magnitude and distribution of SOC varied widely among datasets,with certain datasets showing region-specific robustness.At the global scale,SOC stocks at the top 30 and 100 cm were estimated to be 828(range:577-1 171)and 1 873(range:1 086-2 678)Pg C,respectively.The estimates from GSDE,GSOCmap,and WISE30sec were comparable,and those of SoilGrids250m and HWSD were at the upper and lower ends.The spatial SOC distribution varied greatly among datasets,especially in the northern circumpolar and Tibetan Plateau permafrost regions.Regionally,UM2021 and WISE30sec performed well in the northern circumpolar permafrost regions,and GSDE performed well in China.The estimates of SOC by different datasets also showed large variabilities across different soil layers and biomes.The discrepancies were generally smaller for the 0-30 cm soil than the 0-100 cm soil.The datasets demonstrated relatively higher agreement in grasslands,croplands,and shrublands/savannas than in other biomes(e.g.,wetlands).The users should be mindful of the gaps between regions and biomes while choosing the most appropriate SOC dataset for specific uses.Large uncertainties in existing global gridded SOC estimates were generally derived from soil sampling density,different sources,and various mapping methods for soil datasets.We call for future efforts for standardizing soil sampling efforts,cross-dataset comparison,proper validation,and overall global collaboration to improve SOC estimates.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Straw return decreases polycyclic aromatic hydrocarbon(PAH)accumulation in winter wheat and human health risk by enhancing PAH dissipation in rhizosphere soil

    Jun CAIHe ZHANGXiangyao WUYifan LIU...
    699-708页
    查看更多>>摘要：Straw return in situ,a common agronomic measure in China,has been widely used not only to increase crop yields and improve soil nutrients but also to remove polycyclic aromatic hydrocarbons(PAHs)from agricultural soils.Nevertheless,the safety risks of food crops(i.e.,human health risk of wheat grains)grown in PAHs-contaminated agricultural soils amended with crop straw remain uncertain.A pot experiment was conducted in a PAHs-contaminated agricultural soil cultivated with winter wheat under different ratios of corn straw addition(0％(control,CK),1％,2.5％,and 5％,weight/weight).Results showed that corn straw addition significantly(P＜0.05)decreased PAH concentrations in rhizosphere soil,roots,straws,and grains by 48.32％-50.01％,11.85％-42.67％,9.78％-28.03％,and 14.16％-31.67％,respectively,compared with CK,whereas the transfer factors of PAHs from roots to straws were significantly(P＜0.05)increased.A correlation heatmap showed that PAH concentrations in roots,straws,and grains were positively(P＜0.01)correlated with those in rhizosphere soil.These indicated that corn straw decreased PAH accumulation in winter wheat due to the increase of PAH dissipation in the rhizosphere soil,although it enhanced PAH transfer in winter wheat.The incremental lifetime cancer risk(ILCR)model indicated that corn straw significantly(P＜0.05)decreased the human health risk of winter wheat grains by 29.73％-45.05％.Overall,corn straw apparently reduced PAH accumulation in winter wheat,ecological risk,and human health risk via enhancing PAH dissipation in the rhizosphere soil.These findings provide an important scientific basis and theoretical guidance for agricultural safety production.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Spatiotemporal evolution and assembly processes of ammonia-oxidizing prokaryotic communities in 1 000-year-old coastal reclaimed soils

    Sarfraz HUSSAINYifan YINSenlin LIUShanshan YAN...
    709-725页
    查看更多>>摘要：Coastal marshes are transitional areas between terrestrial and aquatic ecosystems.They are sensitive to climate change and anthropogenic activities.In recent decades,the reclamation of coastal marshes has greatly increased,and its effects on microbial communities in coastal marshes have been studied with great interest.Most of these studies have explained the short-term spatiotemporal variation in soil microbial community dynamics.However,the impact of reclamation on the community composition and assembly processes of functional microbes(e.g.,ammonia-oxidizing prokaryotes)is often ignored.In this study,using quantitative polymerase chain reaction and the Ion S5TM XL sequencing platform,we investigated the spatiotemporal dynamics,assembly processes,and diversity patterns of ammonia-oxidizing prokaryotes in 1 000-year-old reclaimed coastal salt marshes.The taxonomic and phylogenetic diversity and composition of ammonia oxidizers showed apparent spatiotemporal variations with soil reclamation.Phylogenetic null modelling-based analysis showed that across all sites,the archaeal ammonia-oxidizing community was assembled by a deterministic process(84.71％),and deterministic processes were also dominant(55.2％)for ammonia-oxidizing bacterial communities except for communities at 60 years of reclamation.The assembly process and nitrification activity in reclaimed soils were positively correlated.The abundance of the amoA gene and changes in ammonia-oxidizing archaeal and bacterial diversities significantly affected the nitrification activity in reclaimed soils.These findings suggest that long-term coastal salt marsh reclamation affects nitrification by modulating the activities of ammonia-oxidizing microorganisms and regulating their community structures and assembly processes.These results provide a better understanding of the effects of long-term land reclamation on soil nitrogen-cycling microbial communities.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Cadmium found in peanut(Arachis hypogaea L.)kernels mainly originates from root uptake rather than shell absorption from soil

    Xin TANGYurong WANGChangfeng DINGYuepeng YIN...
    726-735页
    查看更多>>摘要：Roots and shells are two potential organs through which peanut plants absorb cadium(Cd)from soils;however,the relative contributions of the two uptake pathways(root uptake and shell absorption)to kernel Cd accumulation and their translocation characteristics are poorly understood.In this study,the relative contributions of the two pathways to Cd accumulation in two peanut cultivars,Xianghua2008(XH)and Yueyou43(YY),were accurately assessed by labeling rooting and podding zone soils with 113Cd and 111Cd isotopes(0.3 mg kg-1 dry soil),respectively,in a split-pot design.The results showed that approximately 96％of the Cd accumulated in the peanut kernels was derived from root uptake,while only 4％originated from shell absorption.Only 1％of the Cd accumulated in whole peanut plants was attributed to shell absorption,of which 41％-44％was retained in shells and 56％-59％ was translocated to kernels.In contrast,the Cd absorbed by roots was efficiently translocated into all plant organs,of which 80％-84％was distributed in shoots.Although YY accumulated 1.3 times more Cd in whole plants than XH,the relative contributions of the two pathways to Cd accumulation in each plant organ were barely affected by peanut cultivars.Due to the strong retention effect of shells,shell-derived Cd was approximately 2 times higher than root-derived Cd in shells.These results would improve the understanding of Cd accumulation processes in peanut plants,revealing that the root uptake pathway contributes predominantly to the Cd concentration in peanut kernels,based on which strategies and technology for the reduction of Cd in peanut plants could be designed and developed.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Co-occurrence of per-and polyfluoroalkyl substances,heavy metals and polycyclic aromatic hydrocarbons and their composite impacts on microbial consortium in soil:A field study

    Meng ZHANGQing WANGXin SONGMukhtiar ALI...
    736-748页
    查看更多>>摘要：This is the first study to report the co-occurrence of per-and polyfluoroalkyl substances(PFASs),heavy metals,and polycyclic aromatic hydrocarbons(PAHs)and their impacts on the native microbial consortium in soil due to the long-term exposure.The PFASs,heavy metals,and PAHs were detected in soil samples collected at 2-6 m below the ground surface at different sampling locations in a steel-making factory.The total concentrations of PFASs varied from 6.55 to 19.79 ng g-1,with perfluorooctane sulfonate(PFOS),perfluorobutane sulfonate,and 6:2 chlorinated polyfluorinated ether sulfonate(alternative of PFOS)being the predominant PFASs.The concentrations of arsenic,cadmium,and lead were detected in the ranges of 4.40-1 270.00,0.01-8.67,and 18.00-647.00 mg kg-1,respectively,and the concentration of total PAHs was detected in the range of 1.02-131.60 mg kg-1.The long-term exposure to mixed contaminants of PFASs,heavy metals,and PAHs led to lower richness and diversity of microbial communities in soil.The soil bacterial communities were mainly composed of Pseudomonas,norank_p_GAL15,Leptothrix,norank_o_Rokubacteriales,and Acinetobacter.Correlations between soil environmental factors and microbial communities indicated that cation exchange capacity and total phosphorus were two key factors in shaping the composition of native microbial communities.Furthermore,Arthrobacter,Leptothrix,and Sphingobium were found to be significantly positively correlated with PFAS concentrations,indicating that these genera could tolerate the stress exerted by PFASs,along with the stress imposed due to the presence of heavy metals or/and PAHs.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    15N tracers and microbial analyses reveal in situ N2O sources in contrasting water regimes of a drained peatland forest

    Mohit MASTAMikk ESPENBERGLaura KUUSEMETSJaan P?RN...
    749-758页
    查看更多>>摘要：Managed peatlands are a significant source of nitrous oxide(N2O),a powerful greenhouse gas and stratospheric ozone depleter.Due to the complexity and diversity of microbial N2O processes,different methods such as tracer,isotopomer,and microbiological technologies are required to understand these processes.The combined application of different methods helps to precisely estimate these processes,which is crucial for the future management of drained peatlands,and to mitigate soil degradation and negative atmospheric impact.In this study,we investigated N2O sources by combining tracer,isotopomer,and microbial analysis in a drained peatland forest under flooded and drained treatments.On average,the nitrification genes showed higher abundances in the drained treatment,and the denitrification genes showed higher abundances in the flooded treatment.This is consistent with the underlying chemistry,as nitrification requires oxygen while denitrification is anaerobic.We observed significant differences in labelled N2O fluxes between the drained and flooded treatments.The emissions of N2O from the flooded treatment were nearly negligible,whereas the N2O evolved from the nitrogen-15(15N)-labelled ammonium(15NH4+)in the drained treatment peaked at 147 pg 15N m-2 h-1.This initially suggested nitrification as the driving mechanism behind N2O fluxes in drained peatlands,but based on the genetic data,isotopic analysis,and N2O mass enrichment,we conclude that hybrid N2O formation involving ammonia oxidation was the main source of N2O emissions in the drained treatment.Based on the 15N-labelled nitrate(15NO3-)tracer addition and gene copy numbers,the low N2O emissions in the flooded treatment came possibly from complete denitrification producing inert dinitrogen.At atomic level,we observed selective enrichment of mass 45 of N2O molecule under 15NH4+amendment in the drained treatment and enrichment of both masses 45 and 46 under 15NO3-amendment in the flooded treatment.The selective enrichment of mass 45 in the drained treatment indicated the presence of hybrid N2O formation,which was also supported by the high abundances of archaeal genes.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    In-situ warming does not change soil priming effect induced by glucose addition in a temperate forest

    Xiaohan DONGYunting FANGDongwei LIUXin GUAN...
    759-769页
    查看更多>>摘要：Priming effect(PE)on soil organic carbon(SOC)decomposition caused by the addition of organic carbon(C)is an important ecological process in regulating soil C cycle.Additionally,most priming studies are confined to laboratory trials,while the assessment of soil PE under field conditions with variable weather conditions is scarce.This study assessed the direct effects of glucose addition and in-situ warming on the extent of PE under field conditions in a temperate forest.We evaluated soil PE using 13C-glucose labelling,a simple and novel technique,based on the Keeling plot method.Glucose addition significantly enhanced native SOC decomposition and induced strong PE.However,the effect of in-situ warming on the extent of PE was not significant.This study confirms the importance of PE in regulating SOC turnover under field conditions.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Change of pore water near the freezing front during soil freezing:Migration and mechanisms

    Yajun SHIWei MALianhai ZHANGChengsong YANG...
    770-782页
    查看更多>>摘要：The formation and growth of segregation ice dominate the frost heave during soil freezing,which is closely related to water migration.To analyze segregation ice during soil freezing for different soils,a freezing-thawing experiment was conducted with Lanzhou loess(LZL)and Qinghai-Tibet Plateau silty clay(QSC)using a novel layered nuclear magnetic resonance approach.During LZL freezing,the unfrozen water content first increased and then decreased with decreasing temperature near the freezing front,but decreased with decreasing temperature in other layers,whereas during the freezing of QSC,the unfrozen water content in different layers(including the freezing front)decreased with decreased temperature.Notably,the increased liquid water near the freezing front during LZL freezing was primarily adsorbed water.In addition to the temperature gradient,the squeezing action during soil freezing was another important factor affecting water migration,especially at the early stage of soil freezing.However,which of the two factors,squeezing action and temperature gradient,was the dominant one causing water migration depended on soil structure.At the early stage of soil freezing,the squeezing action had a significant effect on the water migration of LZL,but no significant effect on that of QSC.Furthermore,water accumulation of LZL near the freezing front due to squeezing action at the early stage of freezing limited the formation and growth of segregation ice.This study provided an improved understanding for ice segregation and water migration during soil freezing.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Combining conservation tillage with nitrogen fertilization promotes maize straw decomposition by regulating soil microbial community and enzyme activities

    Houping ZHANGXueqin TANGQuanming HOUYuanpeng ZHU...
    783-796页
    查看更多>>摘要：Straw return can effectively improve farmland soil microenvironment and fertility.However,excessive straw in the topsoil adversely affects seed germination and crop growth.At present,the characteristics and key driving factors of straw decomposition in dry farmlands are unclear.Based on the interactions between tillage practices including zero tillage(ZT),chisel tillage(CT),and plow tillage(PT)and nitrogen(N)fertilization,i.e.,low N(N1,180 kg ha-1),normal N(N2,240 kg ha-1),and high N(N3,300 kg ha-1),quantitative polymerase chain reaction technology and an enzymatic detection kit were used to investigate the effects of key straw C-degrading enzyme activities and microbial abundance in soil on maize straw decomposition during the growth period of winter wheat in the winter wheat/summer maize double cropping system in a dry farmland of the Loess Plateau,China.Between 2018 and 2020,ZT and CT significantly increased winter wheat yield(by 10.94％and 12.79％,respectively)and straw decomposition velocity(by 20％and 26.67％,respectively),compared with PT.Compared to N1 and N3,N2 significantly increased wheat yield(by 4.65％and 5.31％,respectively)and straw decomposition velocity(by 26.33％and 13.21％,respectively).The partial least squares pathway modelling showed significant positive direct effects of soil moisture,N03,NH4,total N,bacteria,and cellulase,laccase,and xylanase activities on straw decomposition,while soil pH,fungi,and Actinomycetes had significant negative direct effects.Overall,conservation tillage(ZT and CT)combined with N2 was beneficial for straw decomposition in the drylands of the Loess Plateau and improved straw resource utilization and basic soil fertility.The results of the study clarified the key drivers of straw decomposition in dry farmlands and provided new ideas for developing updated soil management practices and adaptive N application strategies to promote the resource utilization of straw and achieve the goals of carbon peaking and carbon neutrality.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Assessment of SoilGrids data for soil erosion estimation at watershed scale:A case study in northern Thailand

    Chike Onyeka MADUEKEDhruba Pikha SHRESTHAPanagiotis NYKTAS
    797-813页
    查看更多>>摘要：Soil erosion has been identified as one of the most destructive forms of land degradation,posing a threat to the sustainability of global economic,social and environmental systems.This underscores the need for sustainable land management that takes erosion control and prevention into consideration.This requires the use of state-of-the-art erosion prediction models.The models often require extensive input of detailed spatial and temporal data,some of which are not readily available in many developing countries,particularly detailed soil data.The soil dataset Global Gridded Soil Information(SoilGrids)could potentially fill the data gap.Nevertheless,its value and accuracy for soil erosion modelling in the humid tropics is still unknown,necessitating the need to assess its value vis-à-vis field-based data.The major objective of this study was to conduct a comparative assessment of the value of SoilGrids and field-based soil data for estimating soil loss.Soil samples were collected from five physiographic positions(summit,shoulder,back slope,foot slope,and toe slope)using the soil catena approach.Samples were collected using a 5-cm steel sample ring(undisturbed)and a spade(disturbed).Data of the landform,predominant vegetation types,canopy cover,average plant height,land use,soil depth,shear strength,and soil color were recorded for each site.The soil samples were subjected to laboratory analysis for saturated hydraulic conductivity,bulk density,particle size distribution,and organic matter content.Pedotransfer functions were applied on the SoilGrids and field-based data to generate soil hydrological properties.The resultant field-based data were compared with the SoilGrids data for corresponding points/areas to determine the potential similarities of the two datasets.Both datasets were then used as inputs for soil erosion assessment using the revised Morgan-Morgan-Finney model.The results from both datasets were again compared to determine the degree of similarity.The results showed that with respect to point-based comparison,both datasets were significantly different.At the hillslope delineation level,the field-based data still consistently had a greater degree of variability,but the hillslope averages were not significantly different for both datasets.Similar results were recorded with the soil loss parameters generated from both datasets;point-based comparison showed that both datasets were significantly different,whereas the reverse was true for parcel/area-based comparison.SoilGrids data are certainly useful,especially where soil data are lacking;the utility of this dataset is,however,dependent on the scale of operation or the extent of detail required.When detailed,site-specific data are required,SoilGrids may not be a good alternative to soil survey data in the humid tropics.On the other hand,if the average soil properties of a region,area,or land parcel are required for the implementation of a particular project,plan,or program,SoilGrids data can be a very valuable alternative to soil survey data.
      原文链接:
    • NETL
    • NSTL
    • 万方数据