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期刊信息/Journal information
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。
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    Importance of periphytic biofilms for carbon cycling in paddy fields:A review

    Lei ZHOUYonghong WUJunzhuo LIUPengfei SUN...
    36-43页
    查看更多>>摘要:Paddy fields play an important role in global carbon(C)cycling and are an important source of methane(CH4)emissions.Insights into the processes influencing the dynamics of soil organic C(SOC)in paddy fields are essential for maintaining global soil C stocks and mitigating climate change.Periphytic biofilms composed of microalgae,bacteria,and other microorganisms are ubiquitous in paddy fields,where they directly mediate the transfer of elements at the soil-water interface.However,their contributions to C turnover and exchange have been largely neglected.Periphytic biofilms affect and participate in soil C dynamics by altering both abiotic(e.g.,pH and redox potential)and biotic conditions(e.g.,microbial community composition and metabolism).This review summarizes the contributions of periphytic biofilms to soil C cycling processes,including carbon dioxide fixation,SOC mineralization,and CH4 emissions.Future research should be focused on:i)the mechanisms underlying periphytic biofilm-induced C fixation and turnover and ii)quantifying the contributions of periphytic biofilms to soil C uptake,stabilization,and sequestration in paddy fields.

    Soil and microbial C∶N∶P stoichiometries play vital roles in regulating P transformation in agricultural ecosystems:A review

    Guanglei CHENJiahui YUANShenqiang WANGYuting LIANG...
    44-51页
    查看更多>>摘要:Stoichiometry plays a crucial role in biogeochemical cycles and can modulate soil nutrient availability and functions.In agricultural ecosystems,phosphorus(P)fertilizers(organic or chemical)are often applied to achieve high crop yields.However,P is readily fixed by soil particles,leading to low P use efficiency.Therefore,understanding the role of carbon:nitrogen:P stoichiometries of soil and microorganisms in soil P transformation is of great significance for P management in agriculture.This paper provides a comprehensive review of the recent research on stoichiometry effect on soil P transformation in agricultural ecosystems.Soil microorganisms play an important role in the transformation of soil non-labile inorganic P to microbial biomass P by regulating microbial biomass stoichiometry.They also mobilize soil unavailable organic P into available P by changing ecoenzyme stoichiometry.Organic materials,such as manure and straw,play an important role in promoting the transformation of insoluble P into available P as well.Additionally,periphytic biofilms can reduce P loss from rice field ecosystems.Agricultural stoichiometries are different from those of natural ecosystems and thereby should receive more attention due to the influences of anthropogenic factors.Therefore,it is necessary to conduct further stoichiometry research on the soil biochemical mechanisms underlying P transformation in agricultural ecosystems.In conclusion,understanding stoichiometry impact on soil P transformation is crucial for P management in agricultural ecosystems.

    Effects of different organic fertilizers on nitrous oxide and methane emissions from double-cropping rice fields

    Mingcheng HUAndrew J.WADEWeishou SHENZhenfang ZHONG...
    52-62页
    查看更多>>摘要:Rice fields are a major source of greenhouse gases,such as nitrous oxide(N2O)and methane(CH4).Organic fertilizers may potentially replace inorganic fertilizers to meet the nitrogen requirement for rice growth;however,the simultaneous effects of organic fertilizers on N2O and CH4 emissions and crop yield in paddy fields remain poorly understood and quantified.In this study,experimental plots were established in conventional double-cropping paddy fields in the Pearl River Delta,China,including an unfertilized control and five fertilizer treatments with fresh organic fertilizer(FOF),successively composted organic fertilizer(SOF),chemically composted organic fertilizer(COF),COF supplemented with inorganic fertilizer(COIF),and chemical fertilizers(CFs)(TFOF,TSOF,TCOF,TCOIF,and TCF,respectively).Paddy field soils behaved simultaneously as an N2O sink(cumulative N2O emission:-196 to-381 g N ha-1)and as a CH4 source(cumulative CH4 emission:719 to 2 178 kg ha-1).Compared to CFs.the effects of organic fertilizers on N2O emission were not significant.In contrast,total annual CH4 emission increased by 157%,132%,125%,and 37%in TFOF,TCOF,TSOF,and TCOIF,respectively,compared to TCF.In TCOIF,rice yield was maintained,while CH4 emission was not significantly increased from the paddy fields characterized by a prolonged flood period.An important next step is to extend these field-based measurements to larger rice cultivation areas to quantify the regional and national-scale impacts on greenhouse gas emissions and to help determine the optimum practice for fertilizer use.

    Patterns and drivers of seasonal water sources for artificial sand-fixing plants in the northeastern Mu Us sandy land,Northwest China

    Yanwu PEILaiming HUANGMing'an SHAOJiao WANG...
    63-77页
    查看更多>>摘要:Understanding plant water-use patterns is important for improving water-use efficiency and for sustainable vegetation restoration in arid and semi-arid regions.However,seasonal variations in water sources and their control by different sand-fixing plants in water-limited desert ecosystems remain poorly understood.In this study,stable isotopic ratios of hydrogen(δ2H)and oxygen(δ18O)in precipitation,soil water,groundwater,and xylem water were determined to document seasonal changes in water uptake by three representative plant species(Pinus sylvestris var.mongolica Litv.,Amygdalus pedunculata Pall.,and Salix psammophila)in the northeastern Mu Us sandy land,Northwest China.Based on the depth distribution and temporal variation of measured gravimetric soil water content(SWC),the soil water profile of the three species stands was divided into active(0.01 gg-1<SWC<0.08 g g-1,20%<coefficient of variation(CV)<45%),stable(0.02 g g-1<SWC<0.05 g g-1,CV<20%),and moist(0.08 g g-1<SWC<0.20 g g-1,CV>45%)layers.Annually,P.sylvestris,A.pedunculata,and S.psammophila obtained most water from deep(59.2%±9.7%,moist layer and groundwater),intermediate(57.4%±9.8%,stable and moist layers),and shallow(54.4%±10.5%,active and stable layers)sources,respectively.Seasonally,the three plant species absorbed more than 60%of their total water uptake from the moist layer and groundwater in the early(June)dry season;then,they switched to the active and stable layers in the rainy season(July-September)for water resources(50.1%-62.5%).In the late(October-November)dry season,P.sylvestris(54.5%-66.2%)and A.pedunculata(52.9%-63.6%)mainly used water from stable and moist layers,whereas S.psammophila(52.6%-70.7%)still extracted water predominantly from active and stable layers.Variations in the soil water profile induced by seasonal fluctuations in precipitation and groundwater levels and discrepancies in plant phenology,root distribution,and water demand are the main factors affecting the seasonal water-use patterns of artificial sand-fixing plants.Our study addresses the issue of plant water uptake with knowledge of proportional source-water use and reveals important implications for future vegetation restoration and water management in the Mu Us sandy land and similar desert regions around the world.

    Adsorption of trichlorphon on phyllosilicate minerals:Effect of low-molecular-weight organic acids

    Hongfeng CHENZhouyang HEMingxia HOUCilai TANG...
    78-87页
    查看更多>>摘要:The use of trichlorphon in large quantities causes a large number of organic pollutants to enter water,sediments,and soils.Phyllosilicate minerals are considered effective adsorbents for organic pollutants.However,the adsorption behavior of organic pollutants on soil minerals affected by low-molecular-weight organic acids(LMWOAs)is not fully understood.In this study,the effect of LMWOAs on the adsorption behavior of trichlorphon on phyllosilicate minerals was investigated using a combination of adsorption measurements and molecular spectroscopic techniques(attenuated total reflection-Fourier transform infrared spectroscopy(ATR-FTIR)and X-ray photoelectron spectroscopy(XPS)).The adsorption of trichlorphon onto kaolinite(KAO)and montmorillonite(MON)was suppressed by increasing pH,indicating that electrostatic interaction played a key role in adsorption,especially at low pH.In the presence of citric acid(CA),there was an obvious promotion of trichlorphon adsorption on KAO and MON.In the presence of oxalic acid(OA),the adsorption of trichlorphon on KAO was promoted,whereas the adsorption on MON was inhibited,especially at pH 4.0.The presence of CA and OA increased the adsorption by increasing the exposure of hydrophobic sites of KAO and MON.The results from ATR-FTIR and XPS also indicated that the hydrophobic Si-O sites of phyllosilicate minerals were the preferred adsorption sites for trichlorphon in the presence of CA and OA,probably driven by the hydrophobic effect.However,the weak effect of OA on MON caused an increase in the electrostatic repulsion between MON and trichlorphon molecules,thus inhibiting adsorption.This study is significant for a deeper understanding of self-purification of soil and sediment systems in the presence of organic pollutants.

    Agronomic performances of biodegradable and non-biodegradable plastic film mulching on a maize cropping system in the semi-arid Loess Plateau,China

    Hao ZHANGMengqiong CHENRuiquan QIAOFan DING...
    88-96页
    查看更多>>摘要:Biodegradable plastic film mulch(PFM)is considered an alternative to non-biodegradable PFM to mitigate the negative impacts of residual film.However,the agronomic performance of biodegradable PFM in comparison to non-biodegradable PFM still needs to be tested.In this study,we evaluated the effects of biodegradable and non-biodegradable PFM on soil physicochemical properties,microbial community,and enzyme activities,as well as maize growth performance.Biodegradable and non-biodegradable PFM both increased soil temperature,water content,N content,and microbial biomass and maize yield by up to 30%,but decreased soil enzyme activities as compared to no mulching(control,CK).Most soil physicochemical properties,microbial community,and enzyme activities were similar under non-biodegradable and biodegradable PFM at the early stages of maize growth.However,at the late stages,soil temperature,water content,mineral N,NO3--N,ammonia monooxygenase(AMO)activity,and total phospholipid fatty acids(PLFAs)decreased under biodegradable PFM owing to film fragmentation.White PFM increased soil temperature,water content,and total PLFAs at the early stages of maize growth but decreased soil mineral N and total PLFAs at the late stages,as compared to black PFM.As soil temperature and N availability were the major factors affecting soil microbial community,microbial activity decreased after the fragmentation of biodegradable PFM,owing to the decreased soil temperature,water content,and mineral N.Notably,biodegradable PFM could decrease NO3-N accumulation in topsoil by decreasing N transformation due to the lower microbial and N-related enzyme(e.g.,AMO)activities,compared with non-biodegradable PFM,which may avoid negative environmental impacts,such as NO3-N leaching or gas emission after harvest.Maize yield,height,aboveground biomass,and N uptake under biodegradable PFM were similar to those under non-biodegradable PFM during maize growth,implying that biodegradable PFM has no negative impact on crop growth and yield.In general,biodegradable PFM was equivalent to non-biodegradable PFM in terms of maize yield increase and N uptake,but was environmentally friendly.Therefore,biodegradable PFM can be used as an alternative to non-biodegradable PFM in semi-arid areas for sustainable agricultural practices.

    Organo-mineral complexes in soil colloids:Implications for carbon storage in saline-alkaline paddy soils from an eight-year field experiment

    Mengmeng CHENShirong ZHANGLu LIUBaojian CHANG...
    97-109页
    查看更多>>摘要:The combination of organic carbon(OC)and reactive minerals is a crucial mechanism of soil carbon(C)storage,which is regulated by the formation of organo-mineral complexes on the surface of soil colloids.The effect of organic fertilizer on the storage mechanism of OC in soil colloids was studied through an 8-year field experiment,which included four treatments:i)no fertilization(control,CK),ii)only mineral N,P,and K fertilization(NPK),iii)NPK plus a low level(450 kg C ha-1 year-1)of organic fertilization(NPKC1).and iv)NPK plus a high level(900 kg C ha-1 year-1)of organic fertilization(NPKC2).The main results indicated that organic fertilizer addition significantly increased the content of aromatic-C,which was 158.7%and 140.0%higher in soil colloids than in bulk soil in the NPKC1 and NPKC2 treatments,respectively.X-ray photoelectron spectroscopy further demonstrated that the relative proportion of C=C group on the surface of soil colloids was increased by 20.1%and 19.1%in the NPKC1 and NPKC2 treatments,respectively,compared with the CK.In addition,compared with the NPK treatment,the content of reactive minerals(such as Fe and Al oxides)significantly increased with organic fertilization,which was positively correlated with C=C group in soil colloids.This indicates that aromatic-C may be retained by the formation of aromatic-mineral complexes with reactive minerals in soil colloids.Organic fertilization also significantly increased OC storage efficiency(OCSE),which was significantly higher in the NPKC1 treatment than in the NPKC2 treatment.Therefore,a moderate amount of organic fertilizer application is a better agronomic practice to increase OCSE and OC storage in saline-alkaline paddy soils.

    Effects of organic fertilizers produced using different techniques on rice grain yield and ammonia volatilization in double-cropping rice fields

    Mingcheng HUAndrew J.WADEWeishou SHENZhenfang ZHONG...
    110-120页
    查看更多>>摘要:Ammonia(NH3)volatilization from rice fields contributes to poor air quality and indicates low nitrogen use efficiency.Although organic fertilizers can meet the nitrogen requirement for rice growth,the simultaneous effects of organic fertilizers on NH3 volatilization and rice yield in paddy fields are poorly understood and quantified.To address this gap in our knowledge,experimental field plots were established in a conventional double-cropping paddy field in the Pearl River Delta region,southern China.Five fertilizer treatments were used besides the control with no fertilizer:fresh organic fertilizer,successively composted organic fertilizer,chemically composted organic fertilizer,mixture of chemically composted organic fertilizer with inorganic fertilizer,and chemical fertilizer.Ammonia volatilization was measured using a batch-type airflow enclosure method.No significant differences in grain yield were observed among organic and chemical fertilizer treatments.However,compared with chemical fertilizer,chemically composted organic fertilizer and successively composted organic fertilizer significantly decreased total NH3 volatilization by 70%and 68%,respectively.The ammonium-nitrogen concentration in field surface water correlated strongly(P<0.01)and positively with NH3 volatilization across fertilization treatments.Our findings demonstrate that chemically composted organic fertilizer can sustain rice yield while reducing NH3 volatilization.An important future step is to promote these field measurements to similar rice cultivation areas to quantify the regional-and national-scale impact on air quality and nitrogen deposition in sensitive areas,and to design and implement better fertilizer management practices.

    Alterations of soil aggregates and intra-aggregate organic carbon fractions after soil conversion from paddy soils to upland soils:Distribution,mineralization and driving mechanism

    Longfei KANGJiamei WUChunfeng ZHANGBaoguo ZHU...
    121-135页
    查看更多>>摘要:Investigating the impacts of soil conversion on soil organic carbon(OC)content and its fractions within soil aggregates is essential for defining better strategies to improve soil structure and OC sequestration in terrestrial ecosystems.However,the consequences of soil conversion from paddy soil to upland soil for soil aggregates and intra-aggregate OC pools are poorly understood.Therefore,the objective of this study was to quantify the effects of soil conversion on soil aggregate and intra-aggregate OC pool distributions.Four typical rice-producing areas were chosen in North and South China,paired soil samples(upland soil converted from paddy soil more than ten years ago vs.adjacent paddy soil)were collected(0-20 cm)with three replicates in each area.A set of core parameters(OC preservation capacity,aggregate carbon(C)turnover,and biological activity index)were evaluated to assess the responses of intra-aggregate OC turnover to soil conversion.Results showed that soil conversion from paddy soil to upland soil significantly improved the formation of macro-aggregates and increased aggregate stability.It also notably decreased soil intra-aggregate OC pools,including easily oxidized OCa(EOCa),particulate OCa(POCa),and mineral-bound(MOCa)OC,and the sensitivity of aggregate-associated OC pools to soil conversion followed the order:EOCa(average reduction of 21.1%)>MOCa(average reduction of 15.4%)>POCa(average reduction of 14.8%).The potentially mineralizable C(Co)was significantly higher in upland soil than in paddy soil,but the corresponding decay constant(k)was lower in upland soil than in paddy soil.Random forest model and partial correlation analysis showed that EOCa and pH were the important nutrient and physicochemical factors impacting k of C mineralization in paddy soil,while MOCa and C-related enzyme(β-D-cellobiohydrolase)were identified as the key factors in upland soil.In conclusion,this study evidenced that soil conversion from paddy soil to upland soil increased the percentage of macro-aggregates and aggregate stability,while decreased soil aggregate-associated C stock and k of soil C mineralization on a scale of ten years.Our findings provided some new insights into the alterations of soil aggregates and potential C sequestration under soil conversion system in rice-producing areas.

    Zokor activity promotes soil water infiltration in the Mu Us sandy land of northern Shaanxi,China

    Miao GANXuchao ZHUXueqin YANGXiaorong WEI...
    136-145页
    查看更多>>摘要:Zokors are common subterranean rodents that inhabit agricultural fields,shrublands,and grasslands in the arid and semi-arid regions of China.Zokor burrowing activities can alter soil structure and affect soil hydrological processes;however,there are few studies regarding their effects on soil preferential flow in the Mu Us sandy land.An evaluation of the effects of zokor disturbance on their habitat and soil water is important for understanding the ecological role of zokors in the soil ecosystem of the Mu Us sandy land.A field dye-tracing experiment was conducted in the Gechougou watershed on the southeastern edge of the Mu Us sandy land to investigate the effect of zokor burrowing activity on soil preferential flow characteristics.Our results showed that the density of zokor tunnels was the highest(0.40-0.46 m m-2)under 30%-50%vegetation coverage and that the tunnels were approximately 3 cm from the surface.Both stained area ratio and stained path number were higher at sites with zokors than without zokors.Stained path widths were 10-80 and>80 mm at zokor-harboring sites exhibiting homogeneous flow and heterogeneous finger flow,respectively.In the absence of zokors,homogeneous flow and highly interacted macropore flow were predominant.Soil water content below the zokor tunnels was higher than that above the tunnels.Moderate disturbance of soil structure by zokor activity facilitated soil water infiltration.These results enabled a better understanding of the effect of soil fauna on soil structure and hydrological processes and provided recommendations for ecological construction and renovation in arid and semi-arid regions.