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| 1 | Quantitative approach on SEM images of microstructure of clay soils显示文摘The working principles of Videolab Image Processing System (VIPS), the examining methods of orientation of microstructural units of clay soils and analysing results on SEM images of some typical microstructures of clay soils using the VIPS are introduced. | 施斌 李生林 M.Tolkachev | 1995 | Science China Chemistry1995，38，6： | 18 |
| 2 | Review of collapse triggering mechanism of collapsible soils due towetting显示文摘Loess soil deposits are widely distributed in arid and semi-arid regions and constitute about 10% of land area of the world.These soils typically have a loose honeycomb-type meta-stable structure that is susceptible to a large reduction in total volume or collapse upon wetting.Collapse characteristics contribute to various problems to infrastructures that are constructed on loess soils.For this reason,collapse triggering mechanism for loess soils has been of significant interest for researchers and practitioners all over the world.This paper aims at providing a state-of-the-art review on collapse mechanism with special reference to loess soil deposits.The collapse mechanism studies are summarized under three different categories,i.e.traditional approaches,microstructure approach,and soil mechanics-based approaches.The traditional and microstructure approaches for interpreting the collapse behavior are comprehensively summarized and critically reviewed based on the experimental results from the literature.The soil mechanics-based approaches proposed based on the experimental results of both compacted soils and natural loess soils are reviewed highlighting their strengths and limitations for estimating the collapse behavior.Simpler soil mechanics-based approaches with less parameters or parameters that are easy-to-determine from conventional tests are suggested for future research to better understand the collapse behavior of natural loess soils.Such studies would be more valuable for use in conventional geotechnical engineering practice applications. | Ping Li Sai Vanapalli Tonglu Li | 2016 | Journal of Rock Mechanics and Geotechnical Engineering2016，8，2： | 15 |
| 3 | Data-driven estimates of global nitrous oxide emissions from croplands显示文摘Croplands are the single largest anthropogenic source of nitrous oxide(N2O) globally, yet their estimates remain difficult to verify when using Tier 1 and 3 methods of the Intergovernmental Panel on Climate Change(IPCC). Here, we re-evaluate global cropland-N2O emissions in 1961–2014, using N-rate-dependent emission factors(EFs) upscaled from 1206 field observations in 180 global distributed sites and high-resolution N inputs disaggregated from sub-national surveys covering 15593 administrative units. Our results confirm IPCC Tier 1 default EFs for upland crops in 1990–2014, but give a ~15% lower EF in 1961–1989 and a ~67% larger EF for paddy rice over the full period. Associated emissions(0.82 ±0.34 Tg N yr–1) are probably one-quarter lower than IPCC Tier 1 global inventories but close to Tier 3 estimates. The use of survey-based gridded N-input data contributes 58% of this emission reduction, the rest being explained by the use of observation-based non-linear EFs. We conclude that upscaling N2O emissions from site-level observations to global croplands provides a new benchmark for constraining IPCC Tier 1 and 3 methods. The detailed spatial distribution of emission data is expected to inform advancement towards more realistic and effective mitigation pathways. | Qihui Wang Feng Zhou Ziyin Shang Philippe Ciais Wilfried Winiwarter Robert B.Jackson Francesco N.Tubiello Greet Janssens-Maenhout Hanqin Tian Xiaoqing Cui Josep G.Canadell Shilong Piao Shu Tao | 2020 | National Science Review2020，7，2： | 7 |
| 4 | Determination of site-specific soil-water characteristic curve from a limited number of test data-A Bayesian perspective显示文摘Determining soilewater characteristic curve(SWCC) at a site is an essential step for implementing unsaturated soil mechanics in geotechnical engineering practice, which can be measured directly through various in-situ and/or laboratory tests. Such direct measurements are, however, costly and timeconsuming due to high standards for equipment and procedural control and limits in testing apparatus. As a result, only a limited number of data points(e.g., volumetric water content vs. matric suction)on SWCC at some values of matric suction are obtained in practice. How to use a limited number of data points to estimate the site-specific SWCC and to quantify the uncertainty(or degrees-of-belief) in the estimated SWCC remains a challenging task. This paper proposes a Bayesian approach to determine a site-specific SWCC based on a limited number of test data and prior knowledge(e.g., engineering experience and judgment). The proposed Bayesian approach quantifies the degrees-of-belief on the estimated SWCC according to site-specific test data and prior knowledge, and simultaneously selects a suitable SWCC model from a number of candidates based on the probability logic. To address computational issues involved in Bayesian analyses, Markov Chain Monte Carlo Simulation(MCMCS), specifically Metropolis-Hastings(M-H) algorithm, is used to solve the posterior distribution of SWCC model parameters, and Gaussian copula is applied to evaluating model evidence based on MCMCS samples for selecting the most probable SWCC model from a pool of candidates. This removes one key limitation of the M-H algorithm, making it feasible in Bayesian model selection problems. The proposed approach is illustrated using real data in Unsaturated Soil Database(UNSODA) developed by U.S. Department of Agriculture. It is shown that the proposed approach properly estimates the SWCC based on a limited number of site-specific test data and prior knowledge, and reflects the degrees-of-belief on the estimated SWCC in a rational and quantitative manner. | Lin Wang Zi-Jun Cao Dian-Qing Li Kok-Kwang Phoon Siu-Kui Au | 2018 | Geoscience Frontiers2018，9，6： | 6 |
| 5 | N_2O emissions from agricultural soils in the North China Plain: the effect of chemical nitrogen fertilizer and organic manure显示文摘An enclosed chamber technique was used to measure N 2O emissions from intensively agricultural soils of the North China Plain during the periods of 1995—1996 and 1997—1998, to reflect distinct components of winter wheat and summer maize growing seasons. The results showed that the continuous application of fertilizer in agricultural soils increased N\-2O emissions by a factor of 24.1—28.1, the calculated annual chemical N fertilizer\|transformed N\-2O\|N emissions was 0.67%. Our results indicated that the application of organic manure also had a significant influence on soil N 2O emissions, which combined with the use of chemical N increased about 20% in a year. It was calculated that there were about 0.11% N of organic manure transformed as N 2O N. Annual mean N 2O emission from our study area of fertilized soils was estimated to be 57.1 μgN 2O/(m 2·h). A weak correlation was also found between N 2O emissions and soil available nitrogen content NH + 4. | DONG Yun\|she 1,2,3 , Dieter Scharffe 2, Manfred Domroes 3, QI Yu chun 1, ZHANG Shen 1 (1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China E\|mail: dongys@dls.iog.ac.cn 2. M | 2000 | Journal of Environmental Sciences2000，12，4： | 6 |
| 6 | Macro-micromechanical approaches for non-coaxiality of coarse grained soils显示文摘For coarse grained soils,their principal stress directions may change when the water level of embankment dam varies instantaneously.In this loading case,the principal directions of stress and strain rate will become non-coaxial.In an effort to model non-coaxial behavior,a modified three-dimensional non-coaxial model is developed in the context of vertex yield(tangent plasticity) theory.Discrete Element Method(PFC) incorporating user-defined interparticle contact models is also employed to gain an insight into microscopic mechanism of non-coaxiality.The analysis focuses on non-coaxial behaviors under simple shear condition.It has been shown that the proposed non-coaxial model gives good predictions for non-coaxiality with reference to microscopic observations while the classical coaxial model fails to simulate the non-coaxial behaviors.In general,non-coaxiality as a result of the rotation of principal stress,is large at a small shear strain,and inclined to become negligible with increasing shear strain.For coarse grained soils,their non-coaxiality tends to largely depend on the initial normal pressure,where a larger degree of non-coaxiality can be observed at a higher pressure. | QIAN JianGu 1,2,HUANG MaoSong 1,2 & SUN HaiZhong 1,2 1 Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai 200092,China 2 Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China | 2011 | Science China(Technological Sciences)2011，54，S1： | 5 |
| 7 | Behavior of diatomaceous soil in lacustrine deposits of Bogota, Colombia显示文摘This work presents a study on the behaviors of diatomaceous soils. Although studies are rarely reported on these soils, they have been identified in Mexico City, the Sea of Japan, the northeast coast of Australia,the equatorial Pacific, and the lacustrine deposit of Bogota(Colombia), among other locations. Features of this kind of soil include high friction angle, high initial void ratio, high compressibility index, high liquid limit, and low density. Some of these features are counterintuitive from a classical soil mechanics viewpoint. To understand the geotechnical properties of the diatomaceous soil, a comprehensive experimental plan consisting of more than 2400 tests was performed, including physical tests such as grain size distribution, Atterberg limits, density of solid particles, and organic matter content; and mechanical tests such as oedometric compression tests, unconfined compression tests, and triaxial tests.Laboratory tests were complemented with scanning electron microscope(SEM) observations to evaluate the microstructure of the soil. The test results show that there is an increase in liquid limit with increasing diatomaceous content, and the friction angle also increases with increasing diatomaceous content. In addition, several practical correlations were proposed for this soil type for shear strength mobilization and intrinsic compression line. Finally, useful correlations were presented, such as the relationship between the state consistency and the undrained shear strength, the friction angle and the liquid limit, the void ratio at 100 kPa and the liquid limit, the plasticity index and the diatomaceous content, among others. | Bernardo Caicedo Cristhian Mendoza Fernando López Arcesio Lizcano | 2018 | Journal of Rock Mechanics and Geotechnical Engineering2018，10，2： | 5 |
| 8 | 基于Android的车载式土壤电导率和光谱反射率检测系统(英文)显示文摘This paper aims to develop a vehicular integrated system collecting soil electrical conductivity(EC)and spectral reflectance.The system could collect soil EC and spectral reflectance automatically when the vehicle moves and save these measurement results with GPS.The information could reflect the characteristics of soil parameters such as soil salinity and water content.Hence,an Android-based vehicular detection system for soil conductivity and spectral reflectance information was developed.Soil electrical conductivity measurement was performed based on improved'current-voltage'four-terminal method.A STS-NIR spectrometer was used for collecting near-infrared spectral reflectance.The system collected the information of soil electrical conductivity and soil spectral reflectance while collecting GPS,which could be used for precision agriculture.The system was tested in a farm of Beijing on March 25,2014.Soil electrical conductivity of the farmland was measured and soil samples were collected.Water content and soil electrical conductivity were measured in the laboratory.The result of these experiments showed that the system could work stably in farmland and had good prospects. | 裴晓帅 郑立华 孙红 李民赞 杨玮 | 2015 | 农业工程学报2015，31，S2： | 5 |
| 9 | Predicting the entire soil-water characteristic curve using measurements within low suction range显示文摘The soil-water characteristic curve(SWCC) is widely used in the design and evaluation in the practice of geotechnical and geoenvironmental engineering such as the slope stability under the influence of environmental factors. The SWCC has distinct features in the capillary and adsorption zones due to different physical mechanisms. Measurements of the SWCC are typically limited within the capillary zone(i.e., low suction range). It is cumbersome and time-consuming to measure the SWCC in the adsorption zone(i.e., high suction range). This study presents a simple method to predict the entire SWCC within both the capillary and adsorption zones, using measured data only from low suction range(e.g., from 0 to 500 kPa). Experimental studies were performed on a completely weathered granite residual soil to determine its entire SWCC from saturated to dry conditions. The resultant SWCC, along with the SWCC measurements of 14 soils reported in the literature, were used to validate the proposed method. The results indicate that the proposed method has good consistency with a wide array of measured data used in this study. The proposed method is easy to use as it only requires a simple parameter calibration for a commonly used SWCC model. It can be used to improve the reliability in the prediction of the SWCC over the entire suction range when measurements are limited within the low suction range. | YE Yun-xue ZOU Wei-lie HAN Zhong LIU Xiao-wen | 2019 | Journal of Mountain Science2019，16，5： | 4 |
| 10 | Distribution of glycerol ethers in Turpan soils:implications for use of GDGT-based proxies in hot and dry regions显示文摘Proxies based on glycerol dialkyl glycerol tetraethers (GDGTs),a suite of membrane lipids occurring ubiquitously in soils,have generated increasing interest in quantitative paleo-environmental reconstruction.Hot and dry climates are likely to have occurred in the geological past;however,the limitations and applicability of these proxies to hot and dry environments are still unknown.In this study,we analyzed the GDGT distribution in the Turpan (TRP)basin of China,where the highest soil temperature can be approximately 70℃,and the mean annual precipitation (MAP)is 15.3 mm.We compared GDGT-based proxies among TRP soils,Nanyang (NY) soils,and Kunming (KM)soils;these three sites exhibit similar mean annual air temperature (MAAT)albeit contrasting temperature seasonality and MAP.Archaeal isoprenoidal GDGTs (isoGDGTs)dominate over bacterial branched GDGTs (brGDGTs)in most TRP soils;this is a characteristic GDGT distribution pattern for soils from dry regions globally.Another feature is the anomalously high GDGT-0/crenarchaeol ratio,which is generally attributed to the contribution of anaerobic methanogenic archaea by previous studies;however,these anaerobic archaea are unlikely to be highly abundant in the dry TRP soils, indicating that certain uncultured halophilic Euryarchaeota are likely to produce a significant amount of GDGT-0that finally results in a high GDGT-0/Cren ratio.The changes in the salinity of the TRP soils appear to be an important factor affecting the MBT'5ME and the relative abundance of 6-vs.5-methyl pentamethylated brGDGTs (IRIIa,).This is likely to introduce certain scatters in the correlations between MBT'5ME and MAAT and that between IRIIa,and pH determined at the global scale.A comparison of the MBT'5ME-inferred temperature between TRP,NY,and KM soils does not indicate a significant bias toward summer temperature,indicating that brGDGT paleo- thermometers in soils could reflect the MAAT. | Jingjie ZANG Yanyan LEI Huan YANG | 2018 | Frontiers of Earth Science2018，12，4： | 4 |
| 11 | Pseudo-Static Elasto-Plastic Cyclic Creep Model and Cyclic Stability of Offshore Soft Foundation显示文摘The accumulative shear deformation of soft clays under cyclic loads is considered as pseudo-staticcreep.A pseudo-static elasto-plastic cyclic creep model is developed based on the visco-elasto-plastic theory.Theparameters in the model are determined by cyclic triaxial soil tests.A method for analyzing the stability of offshoresoft foundation under wave loads is given by combining the model with pseudo-static creep analysis.An exampleis analyzed by the method.The results show that the horizontal and vertical stability of foundations under waveloads can be analyzed by it and the analytical results are qualitatively consistent with the observed failure modes ofshallow foundations. | 王建华 刘振纹 秦崇仁 | 1999 | China Ocean Engineering1999，14，3： | 4 |
| 12 | Impact of municipal solid waste incineration on heavy metals in the surrounding soils by multivariate analysis and lead isotope analysis显示文摘Municipal solid waste(MSW) incineration has become an important anthropogenic source of heavy metals(HMs) to the environment. However, assessing the impact of MSW incineration on HMs in the environment, especially soils, can be a challenging task because of various HM sources. To investigate the effect of MSW incineration on HMs in soils, soil samples collected at different distances from four MSW incinerators in Shanghai, China were analyzed for their contents of eight HMs(antimony, cadmium, chromium, copper,lead, mercury, nickel, and zinc) and lead(Pb) isotope ratios. Source identification and apportionment of HMs were accomplished using principal component analysis and Pb isotope analysis. Results indicated that the relatively high contents of cadmium, lead,antimony, and zinc in the soils at 250 m and 750–1250 m away from the MSW incinerators were related to MSW incineration, while the elevated contents of the other four HMs were associated with other anthropogenic activities. Based on Pb isotope analysis, the contribution ratio of MSW incineration(which had been operated for more than 14 years)to the accumulation of Pb in soil was approximately 10% on average, which was lower than coal combustion only. Incinerator emissions of Pb could have a measurable effect on the soil contamination within a limited area(≤1500 m). | Yang Li Hua Zhang Liming Shao Xiaoli Zhou Pinjing He | 2019 | Journal of Environmental Sciences2019，31，8： | 4 |
| 13 | Contents and Distribution of Rare Earth Elementsin Main Types ofSoilsin China显示文摘Forty four soils representing the eight types of soils in China were sampled, and their total rare earths and La, Ce, Nd, Sm and Y contents were measured by spectrophotometric and ICP AES methods, averaging 264, 43 7, 86 2, 35 8, 8 38, and 21 8 μg·g -1 , respectively. Rare earth elements were accumulated and leached to a different extent in the various soil forming processes, but REE contents in the soils showed no zonal variation. The available rare earth contents in the sixty one soil samples, averaging 24 9 μg·g -1 , present a decreasing trend from the South to the North in China. About 17% of the total acid soil samples are lower than 10 μg·g -1 in available rare earths, whereas 77% of the total neutral and calcareous soil samples are below the value. Availability of soil REE is primarily affected by pH, Eh(redox potential), and clay contents in the soils. | 冉勇 刘铮 | 1999 | Journal of Rare Earths1999，17，3： | 4 |
| 14 | The Soil-Borne Identity and Microbiome-Assisted Agriculture:Looking Back to the Future显示文摘Looking forward includes looking back every now and then.In 2007,David Weller looked back at 30 years of biocontrol of soil-borne pathogens by Pseudomonas and signified that the progress made over decades of research has provided a firm foundation to formulate current and future research questions.It has been recognized for more than a century that soil-borne microbes play a significant role in plant growth and health.The recent application of high-throughput omics technologies has enabled detailed dissection of the microbial players and molecular mechanisms involved in the complex interactions in plant-associated microbiomes.Here,we highlight old and emerging plant microbiome concepts related to plant disease control,and address perspectives that modern and emerging microbiomics technologies can bring to functionally characterize and exploit plant-associated microbiomes for the benefit of plant health in future microbiome-assisted agriculture. | Peter A.H.M.Bakker Roeland L.Berendsen Johan A.Van Pelt Gilles Vismans Ke Yu Erqin Li Sietske Van Bentum Sanne W.M.Poppeliers Juan J.Sanchez Gil Hao Zhang Pim Goossens Ioannis A.Stringlis Yang Song Ronnie de Jonge CornéM.J.Pieterse | 2020 | Molecular Plant2020，13，10： | 3 |
| 15 | Reflection and transmission of seismic waves at an interface betwen two saturated soils显示文摘ReflectionandtransmisionofseismicwavesataninterfacebetwentwosaturatedsoilsJUNYANG(杨峻)SHIMINGWU(吴世明)ZhejiangUniversity,Hangz... | 杨峻 吴世明 | 1997 | Acta Seismologica Sinica(English Edition)1997，10，1： | 3 |
| 16 | Laboratory test on the combined cooling effect of L-shaped thermosyphons and thermal insulation on high-grade roadway construction in permafrost regions显示文摘With the completion of the Qinghai-Tibetan Railway,economic development of related areas has been greatly accelerated.This,in return,calls for building or upgrading more roadways,especially high-grade roadways.In cold regions,the thawing of permafrost can induce settlement damage of and even failure to railway (or roadway) embankments.Thermosyphons (self-powered refrigera-tion devices that are used to help keep the permafrost cool) have proved effective in mitigating thaw settlement by maintaining the thermal stability of the embankments.However,for high-grade roadway embankments of great width,stabilizing or cooling ef-fects of traditional geotechnological measures may be limited.To enhance the cooling effect of thermosyphons,an L-shaped thermosyphon was designed.A laboratory test was carried out to study the combined cooling effect of the L-shaped thermosyphon and thermal insulation applying to roadbed construction.The angle between the evaporator and condenser sections of the L-shaped thermosyphon is 134 degrees,and the L-shaped thermosyphon was inserted into the soil at an angle of 5 degrees with the road surface.The tested results show that the L-shaped thermosyphon is effective in removing heat from a roadway in winter.When the ambient air temperature is lower than the soil temperature,the thermosyphon is active and extracts the heat in the soil around it.When the ambient air temperature is higher than the soil temperature,the thermosyphon is inactive,and no heat is in-jected into the soil through the L-shaped thermosyphon.Compared to embankments with straight thermosyphons,the inner parts of the embankments with L-shaped thermosyphons were significantly cooled.It is hoped that the present study would be useful to the application of L-shaped thermosyphons in the construction of high-grade roadways in cold regions. | YuanHong Dong,YuanMing Lai,MingYi Zhang,ShuangYang Li State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China. | 2009 | Research in Cold and Arid Regions2009，1，4： | 3 |
| 17 | Review of methods for predicting in situ volume change movementof expansive soil over time显示文摘The soil movement information over time is required for the design of foundations placed in expansive soils. This information is also helpful for the assessment of pre-wetting and controlled wetting mitigation alternatives for expansive soils. Several researchers during the past fifteen years have proposed different methods for the prediction of the soil movements over time. The available methods can be categorized into(i) consolidation theory-based methods,(ii) water content-based methods, and(iii) suction-based methods. In this paper, a state-of-the-art of the prediction methods is succinctly summarized. The methods are critically reviewed in terms of their predictive capacity along with their strengths and limitations. The review highlights the need for prediction methods that are conceptually simple yet efficient for use in conventional engineering practice for different types of expansive soils. | Hana H. Adem Sai K. Vanapalli | 2015 | 岩石力学与工程学报2015，34，1： | 3 |
| 18 | Interaction of silver nanoparticles with mediterranean agricultural soils: Lab-controlled adsorption and desorption studies显示文摘The production of silver nanoparticles(AgNPs) has increased tremendously during recent years due to their antibacterial and physicochemical properties. As a consequence, these particles are released inevitably into the environment, with soil being the main sink of disposal. Soil interactions have an effect on AgNP mobility, transport and bioavailability. To understand AgNP adsorption processes, lab-controlled kinetic studies were performed.Batch tests performed with five different Mediterranean agricultural soils showed that cation exchange capacity and electrical conductivity are the main parameters controlling the adsorption processes. The adsorption kinetics of different sized(40, 75, 100 and 200 nm)and coated(citrate, polyvinylpyrrolidone and polyethyleneglycol(PEG)) AgNPs indicated that these nanoparticle properties have also an effect on the adsorption processes.To assess the mobility and bioavailability of AgNPs and to determine if their form is maintained during adsorption/desorption processes, loaded soils were submitted to leaching tests three weeks after batch adsorption studies. The DIN 38414-S4 extraction method indicated that AgNPs were strongly retained on soils, and single-particle inductively coupled plasma mass spectrometry confirmed that silver particles maintained their nanoform, except for 100 nm PEG-AgNPs and 40 nm citrate-coated AgNPs. The DTPA(diethylenetriaminepentaacetic acid) leaching test was more effective in extracting silver,but there was no presence of AgNPs in almost all of these leachates. | Laura Torrent Eva Margui Ignasi Queralt Manuela Hidalgo Monica Iglesias | 2019 | Journal of Environmental Sciences2019，31，9： | 2 |
| 19 | Interaction between Cd and Pb in the soil-plant system: a case study of an arid oasis soil-cole system显示文摘The Hexi Corridor,our study area,is located in Northwest China and is also the most developed area of oasis farming in arid regions of Northwestern China.However,the rapid development of metallurgy and chemical industries in this region poses a great threat to the accumulation of heavy metals in crops.The objectives of this study are(1)to determine the influence of heavy metals on plant growth;(2)to assess the translocation capability of heavy metals in soil-plant system;and(3)to investigate the interaction between heavy metals.Pot experiments were conducted on cole(Brassica campestris L.)grown in the arid oasis soils singly and jointly treated with cadmium(Cd)and lead(Pb).Nine treatments were applied into the pots.Under the same planting conditions,three scenarios of Cd,Pb and Cd–Pb were designed to compare the interaction between Cd and Pb.The results showed that the response of cole weights to Cd,Pb and Cd–Pb treatments was slight,while Cd and Pb uptakes in cole were more sensitive to the single effects of Cd and Pb concentration in soils from the lower treatment levels.Under the influence of the single Cd,Pb and joint Cd–Pb treatments,Cd concentrations were lower in the cole roots than in the shoots,while for Pb,the results were opposite.Comparison studies revealed that the interaction of Cd and Pb could weaken the cole’s ability to uptake,concentrate and translocate heavy metals in arid oasis soils. | ZhuanJun ZHAO ZhongRen NAN ZhaoWei WANG YiMing YANG Masayuki SHIMIZU | 2014 | Journal of Arid Land2014，6，1： | 2 |
| 20 | Interrelationship between soil depth and soil properties of Pieniny National Park forest(Poland)显示文摘The purpose of this research was to investigate the relationship between soil biota such as microbial activity,soil fauna(e.g.,earthworms and enchytraeids),and soil physical and chemical properties.The study area was located in Pieniny National Park(PNP)in the Carpathian Mountains in southern Poland.Soil samples were collected from six forest monitoring areas of PNP from two soil layers(at 0–15 cm and 15–30 cm down,respectively).The investigated soils were classified to eutric cambisols and had silt or silt loam soil texture.Upon analysis,soil aggregate stability index was connected with other physical,chemical,and biological soil properties.It was noted that the stability index of 3 mm to 5 mm soil aggregates influenced pH and dissolved organic carbon.The stability index of 2 mm to 3 mm soil aggregates was positively correlated with dissolved organic carbon,soil moisture,microbial biomass carbon,total organic carbon,total nitrogen,and enchytraeid density,and negatively correlated with bulk density,particle density,porosity,and permanent wilting point.The stability index of 1 mm to 2 mm soil aggregates was positively correlated with total nitrogen,enchytraeid and earthworm density and negatively correlated with particle density,porosity,and permanent wilting point.The study has shown what factors create a stable soil structure in the forest soils of PNP. | Justyna SOKO?OWSKA Agnieszka JóZEFOWSKA Karolina WO?NICA Tomasz ZALESKI | 2019 | Journal of Mountain Science2019，16，7： | 2 |
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