Fragipan formation in argillic brown earths (Fragiudalfs) of the Milfield Plain, north-east England. II. Post Devensian developmental processes and the origin of fragipan consistence

Pedogenetic processes following a permafrost stage of development in four argillic brown earths with fragipans (Glossic and Ochreptic Fragiudalfs) are investigated by soil microscopy, including SEM observations of unimpregnated soil material, and by determination of clay mineralogy. Micromorphology of the apparently massive fragipan confirms both the presence of subhorizontal fissures infilled with illuvial deposits separating dense lenticular structures formed by ice-lens growth, and former vertical fissures formed by dessication on freezing with subsequent widening by ice-vein development. The firmness and brittle failure of the fragipans are attributed to a closely-packed, well-graded matrix of skeleton grains bonded by clay bridges consisting of non-swelling illite and chlorite and to weak interconnection of macrovoids. Weak cementation is rejected as an explanation of fragipan consistence. Sequential stages of particle translocation have been critical to fragipan formation. High bulk density is attributed not only to irregular compression and contraction of the soil matrix under permafrost conditions but also to the infilling of voids by illuvial silt and clay. The full development of the fragipans has depended on Flandrian clay migration which has contributed to clay-bridge formation, void infilling and localized seasonal impedance of drainage resulting in eluviation of iron oxides, the development of grey polygonal patterning, and processes of degradation at the pan surface leading to glossic features.     

Fragipan formation in argillic brown earths (Fragiudalfs) of the Milfield Plain, north-east England. I. Evidence for a periglacial stage of development

In this first of three papers, the parent materials, morphology and field relationships of soils with fragipans, similar to those in north-eastern United States, are described and analyses of their chemical and physical properties are presented to support a periglacial stage of development. The soil materials have been affected by periglacial processes, including ice-wedge formation, the age of which has been established by reference to a buried paleosol. The fine earth bulk density of the fragipans is between 1.75 and 1.91 g cm⁻³ whereas the density of overlying Eb horizons is < 1.40 g cm⁻³. The formation of the compact lenticular structures and polygonal fissuring of fragipans is ascribed to the former presence of permafrost during the Loch Lomond Stadia1 11 000 to 10 000 years B.P. The polygonal fissures, after subsequent infilling with illuvial material, have determined the position of the greyish polygonal zones which have formed by the eluviation of Fe and Mn from fissure infill and fissure walls by redox processes. Clay migration from the Eb horizon into the fragipan is well marked. Clay and silt have also been locally removed from the upper parts of the greyish zones and redeposited towards their lower parts. Similar textural degradation has affected eluvial pockets in the upper fragipan. It is concluded that periglacial processes fully explain the genesis of macrostructural features but not the distinctive consistence of the fragipan.     

Pore‐size distribution and particle arrangement in fragipan and nonfragipan horizons

Fragipan is a widely distributed subsoil horizon that induces severe limitations to plant growth and land use, mainly because of its high bulk density. In this work, we evaluated the pore‐size distribution through the analysis of the cumulative curve of intruded mercury volume in some soils with fragipan horizons. This approach provides information also about the arrangement of particles, thus we compared the results obtained for fragipan and nonfragipan horizons to relate porosity and particle arrangement with the specific physical properties of fragipans. The total volume of intruded mercury did not allow to discriminate between fragipan and nonfragipan horizons. However, from the variation of the pore volume as a function of the radius, two modal classes of pores were found, coarse and fine, respectively. The fine‐pore class arose from the arrangement of clay particles, and its volume was correlated to clay contents (r = 0.787) and to clay packing density (r = –0.621). The clay fractions in fragipans were less densely packed than in the other B horizons, even if they had similar clay contents. The coarser‐pore modal class is known to arise from the interactions between clay, silt, and sand particles, and its volume was different among horizons. Fragipan had a low volume of this modal pore class. In addition, a packing density for the coarser phase of 0.74, corresponding to a rhombohedral packing, was found only in fragipans. Thus, the low permeability and high bulk density of fragipans are linked to specific arrangements of the particles: an open packing of the clay phase is associated to an extremely dense packing of silt and sand. This combination is not present in any other soil horizon.     

Clues to the genesis of a discontinuously distributed fragipan in the northern Apennines,Italy

At about 1000 m above sea level in the Vallombrosa Forest, northern Apennines, Central Italy, a dense pan that meets the diagnostic criteria for fragipans is discontinuously distributed. The unusual slope-parallel “digitate” distribution of the pan suggests that it could have formed on water-saturated soil material that moved as earthflows. Actually, several soils in the Vallombrosa Forest have buried or truncated horizons, indicating episodes of mass movement and deposition. However, the fragipan under study shows a homogeneous morphology throughout, hence not providing clues about the occurrence of episodes that have contributed to the emplacement of the parent material. Also, the physical, chemical, and mineralogical analyses of the fragipan do not reveal discontinuities that help to resolve distinct episodes of deposition. Nevertheless, discontinuities in features such as the degree of alteration of biotite grains and the amount of plasma, seen through the micromorphological investigation at 50–60 cm of the current depth, suggest the occurrence of at least two depositional events. Radiocarbon dating of large-size pieces of charcoal collected at three depths within the fragipan yielded three ages that may reflect different times of accumulation of the parent material during the last glacial period. Post-depositional micromorphological features, such as relatively undamaged clay coatings and a weak platy structure, indicate pedogenesis with the absence of intense pedoturbation.     

Fragipan formation in argillic brown earths (Fragiudalfs) of the Milfield Plain, north-east England. III. Micromorphological, SEM and EDXRA studies of fragipan degradation and the development of glossic features

The micromorphology of eluvial and glossic areas with weak soi1, strength from the upper fragipan, and the upper parts of grey polygonal zones, in some argillic brown earths (Glossic Fragiudalfs) from north-east England shows unstable void walls stripped of clay with remnants of ferri-argillans, pale grey grainy clay coatings and darker grainy coatings. These occur alongside loose surface residues of skeleton grains and thin grey fine silt coatings of quartz and muscovite. SEM and EDAX studies of coating surfaces, and optical microscopy, SEM and EDXRA of very thin polished sections, show that some grainy clay coatings form as alteration rims of ferri-argillans through localized waterlogging, iron oxide loss and micro-erosion leading to micropitting and disoriented fabrics. The inclusion of coarse clay to fine silt-sized quartz, feldspar and muscovite in other grainy coatings suggests either alteration of impure ferri-argillans or accumulation of degradational products derived from elsewhere on void walls. This is more certainly the case for dark grainy coatings in layered compound illuviation coatings adjacent to glossic areas. These fragipans are degrading from the top downwards by processes which are partly a consequence of the effects that the fragipan has on water percolation and root penetration. The destabilization of void walls, the degradation of ferri-argillans and the remobilization of clay to form glossic features did not begin until seasonal waterlogging in parts of the upper pan was sufficient to mobilize iron.     

Geomorphology and soils distribution under paraglacial conditions in an ice-free area of Admiralty Bay, King George Island, Antarctica

The main pedological, geomorphological and cryogenic features of Keller Peninsula, part of Admiralty Bay, King George Island, Maritime Antarctica, were mapped and quantified with emphasis on the relationship between the ice retreat process, melt-out, landform development and soil distribution. Moraines, protalus, scree slopes, inactive glacial cirques, uplift marine terraces, biogenic landforms, arêtes and Felsenmeer were mapped. Scree slope is the main landform, covering approximately 25% of the peninsula, indicating prominent paraglacial features. Inherited, glacial landforms, such as lateral moraines, highland plateau and exhumed U shaped-valleys, are now being exposed in north Keller by ice shrinkage of former ice protecting cover. Landforms influenced soil formation and stability. Cryosols and Leptosols (WRB) roughly corresponding to Gelisols and Entisols (SSS), respectively, are the most common soil classes, with an overall tendency of absent permafrost in the coastal areas, changing to sporadic permafrost at mid-slope, and discontinuous permafrost with greater altitude and substrate stability.     

波兰喀尔巴阡山麓漂白淋溶土中铁锰结核的分布、形态和化学组成研究

Iron and manganese oxides are common components of soils. They frequently occur in nodules constituting important soil sorbents and play a crucial role in a number of chemical reactions in the soil environment. In addition, the oxides are very sensitive to environmental changes (moisture, pH, Eh) constituting important indicators of soil-forming processes and water movement in the landscape. The objectives of the study were: i) to examine the distribution and size of Fe-Mn nodules in Albeluvisols containing a fragipan horizon; ii) to determine the morphology and chemical composition of the nodules, and iii) to estimate the effect of the fragipan horizon on water movement within the soil profile. An investigation was carried out on five soil profiles containing a fragipan horizon and classified as Fragic Albeluvisols within the Carpathian Foothills in Poland. In the Albeluvisols studied, the maximum concentration of Fe-Mn nodules occurred in the horizon lying directly on the fragipan horizon. This suggests that the pan acts as a natural barrier restricting water infiltration and leads to the seasonal development of a perched water table promoting redox processes. The most common are coarse (1--0.5 mm) and medium (0.5--0.25 mm) irregular Fe-Mn nodules showing a gradual boundary and undifferentiated internal fabric. Eluvial horizons contained also larger amounts of round and dense nodules with a sharp boundary, suggesting frequent oxidation and reduction. The fragipan horizon contained mainly irregular and soft nodules, suggesting longer saturation with water during the year. Concentrations of trace elements (Cu, Zn) and P were higher within Fe-Mn nodules than in the surrounding soil materials, showing that iron and manganese oxides adsorbed and immobilised these elements.     

Saturated hydraulic conductivity in pedogenetic characterization of podzols with fragipans in quebec

Saturated hydraulic conductivity (K) values were measured in the laboratory on two podzolic soils (Spodosols) with fragipans developed from till deposits in the Appalachian and Laurentian Highlands of Quebec. The main difference between these tills lies in their contrasting textures. Due to the presence of coarse fragments and to a brittle and compact horizon, usual methods of measuring K in the field could not be used. Instead, blocks of soil were carved out and encased in paraffin. The technique insures minimum disturbance of the samples and accommodates variations in sample size due to stones.Sainte-Agathe sandy loam (sandy, mixed, frigid Fragiorthod) had higher K values than Arago loam (fine-loamy, mixed, frigid Fragiorthod) throughout the profile. In both soils, K decreased with depth largely as a result of an increase in bulk density. At any given bulk density, however, K was always lower in Arago than in Sainte-Agathe soil. This was attributed to illuviation and reorganization of particles within pores and partings. In the Arago profile, rearrangement of clay-size particles created an important vesicular porosity, thus closing off a portion of the pore volume to water transmission. In the Sainte-Agathe profile, material ranging from fine silt to clay was deposited selectively according to size class. Accessibility of the pore volume to percolating water was thus maintained.A second eluvial horizon Aex (A'2x) is present in the Arago, but not in the Sainte-Agathe soil, just above the fragipan, probably as a result of the very abrupt increase in bulk density from the podzolic B horizon to the fragipan. Water accumulating at the top of the fragipan seeps laterally, enhancing the eluviated character of the Aex horizon. Hydraulic conductivity was higher in this horizon than in over- and underlying horizons, although bulk density was greater.     

Thawing permafrost alters nematode populations and soil habitat characteristics in an Antarctic polar desert ecosystem

Spatial distribution of soil nematode populations in Antarctic terrestrial ecosystems is tightly controlled by environmental factors and thus highly sensitive to changes in soil properties. Increases in the magnitude and frequency of episodic warming events as well as eventual warming trends are likely to result in increased water availability due to glacial melting and permafrost thaw, and may also incite changes in soil physical and chemical characteristics that determine nematode habitat suitability. We hypothesized that climate warming would result in new suitable soil habitats leading to heightened diversity and activity in nematode communities. In order to test this hypothesis, we compared nematode populations in patches of soil wetted by naturally enhanced permafrost thaw versus adjacent soils unaffected by thaw. We found that thaw sites had significantly lower nematode abundances and living to dead ratios, contradicting our hypothesis. We also observed significantly altered soil texture (finer particle size), lower pH and higher salinity in permafrost seeps. These observations suggest that current and future changes in climate may alter soil properties and result in significant changes in nematode population structure, distribution and function.     

Morphology and properties of the soils of permafrost peatlands in the southeast of the Bol’shezemel’skaya tundra

The morphology and properties of the soils of permafrost peatlands in the southeast of the Bol’shezemel’skaya tundra are characterized. The soils developing in the areas of barren peat circles differ from oligotrophic permafrost-affected peat soils (Cryic Histosols) of vegetated peat mounds in a number of morphological and physicochemical parameters. The soils of barren circles are characterized by the wellstructured surface horizons, relatively low exchangeable acidity, and higher rates of decomposition and humification of organic matter. It is shown that the development of barren peat circles on tops of peat mounds is favored by the activation of erosional and cryogenic processes in the topsoil. The role of winter wind erosion in the destruction of the upper peat and litter horizons is demonstrated. A comparative analysis of the temperature regime of soils of vegetated peat mounds and barren peat circles is presented. The soil–geocryological complex of peat mounds is a system consisting of three major layers: seasonally thawing layer–upper permafrost–underlying permafrost. The upper permafrost horizons of peat mounds at the depth of 50–90 cm are morphologically similar to the underlying permafrost. However, these layers differ in their physicochemical properties, especially in the composition and properties of their organic matter.     

退火对冷冻干燥固态果蔬食品模拟体系冰晶结构和质构的影响

为探究冷冻过程中退火条件对真空冷冻干燥固体果蔬食品模拟体系冰晶结构、干燥特性、微观结构和质构的影响,该试验通过建立真空冷冻干燥果胶-蔗糖凝胶体系模拟果蔬天然网络结构,考察了不同退火条件对冷冻模拟体系的冰晶结构、冷冻干燥模拟体系的微观结构和质构等品质的影响。结果表明,退火温度范围和退火次数是影响冰晶结构、干燥过程和产品质构的重要因素。研究发现,冷冻模拟体系冰晶的直径均值、冰晶比例随退火温度范围增加和退火次数增加而降低;模拟体系的冷冻干燥速率随退火温度范围和退火次数增加而加快;冻干模拟体系的硬度和脆度随退火温度范围和退火次数增加而降低。采用0 ℃退火3次条件下,干燥时间最短约为14.0 h,此时模拟体系冰晶分形维数为1.616,冰晶直径极差为0.98 mm,直径切尾均值为0.16 mm,冰晶比例为75.00%,在脆度阈值为0.784 N时脆度保留效果最好,峰个数为4.33。相关性分析结果表明,模拟体系的干燥时间与冰晶直径分布的离散程度、直径均值呈正相关,与分形维数呈负相关,与冰晶的直径均值和退火到达温度呈正相关。该研究明确了退火条件对模拟体系冰晶形态和冻干后多孔结构的影响,可为真空冷冻干燥食品预冻过程中控制冰晶形成提供理论依据。     

Suprapermafrost organic-accumulative horizons in the tundra cryozems of northern Yakutia

Organic-accumulative horizons above the permafrost table have been described in the profiles of cryozems developing on interfluve surfaces in the tundra zone of northern Yakutia. The organic matter content in these suprapermafrost horizons is comparable with or even exceeds the organic matter content in the surface horizons. The dynamics of seasonal thawing specify the annual involvement of the material of these horizons into the zone of active pedogenesis or its exclusion from it in the case of their frozen state. The analysis of the morphology of cryozems of the Kolyma Lowland along a 1000-km-long sublatitudinal transect shows that the accumulation and migration of raw organic materials (predominantly, differently decomposed peat) above the permafrost table take place upon the particular combinations of local factors (the soil moistening, ice content, freezing-thawing conditions, nanotopography of the permafrost table, etc.) at the lower boundary of the active layer. The well-pronounced accumulation of the raw organic material in the suprapermafrost horizons can be reflected in the substantive characteristics of these horizons and should be taken into account in classification decisions.     

Crop yield and rooting as affected by fragipan depth in loess soils in the southeast USA

The combination of soil erosion and restrictive subsurface features can adversely influence root growth and crop productivity. The effects of depth to a restrictive layer on yield and root development were determined for soybean (Glycine max (L.) Merr.) and corn (Zea mays L.) grown on Grenada silt loam (Oxyaquic Fraglossudalfs) in West Tennessee. Seven sites were selected in a cropped field where depth to the fragipan ranged from 0 to 107 cm below the soil surface. Across-the-site comparisons involving bulk density, soil color, exchangeable acidity and organic carbon indicated that at the sites that were shallow to the fragipan, profile modification had occurred as a result of soil erosion. Soils were sampled to 120 cm depths in 15 cm increments within the row and 25 and 51 cm from the row. Roots were extracted and total root lengths were determined by the line-intercept method. Greater total root lengths were observed with increasing depth to the fragipan. Crop yields decreased significantly as depth to the fragipan decreased. Soybean yields ranged from 0.5 Mg ha⁻¹ on the 0 cm depth site to 2.8 Mg ha⁻¹ on the 107 cm depth site, whereas corn yields ranged from 5.5 Mg ha⁻¹ on the 0 cm depth site to 10.0 Mg ha⁻¹ on the 107 cm depth site. Erosion was not measured directly; however, the reduced soil depth due to erosion caused an easily demonstrated reduction in root growth and yield in both corn and soybean.     

热融湖塘对青藏高原土壤饱和导水率的影响及因素分析

为研究多年冻土区热融湖塘对湖岸生态水文过程的影响,该文基于湖岸不同迹地植被发育、导水性及土壤理化性质的分析,并结合土壤转换函数(pedo-transfer functions,PTFs),对土壤导水性及其影响因素进行研究。结果表明:热融湖塘的形成使土壤环境发生了重要演变,其中湖岸死根区土壤饱和导水率相比于未影响区域(110.88 cm/d)增加了70.1%之多,而其在盐渍化区域相比于未影响区域减少了33.8%,同时土壤饱和导水率随着坡度的增加而增强;通过比较ROSETTA、CAMPBELL和VAUCLIN 3种土壤转换函数的预测能力,发现VAUCLIN模型更适合于模拟青藏高原高寒草甸土壤饱和导水率。热融湖塘影响迹地对土壤饱和导水率的变化,是植被盖度、有机质含量、颗粒组成等因素耦合影响作用的结果,运用土壤转换函数对其进行预测时,须综合考虑以上因子。对热融湖塘不同迹地土壤水力参数的研究可为区域土壤侵蚀,产流模式及水文过程的研究提供理论基础。     

Linking fragipans,perched water tables,and catchment-scale hydrological processes

Soils with very slowly permeable fragipans and fragipan-like argillic horizons are extensive throughout the Palouse Region of northern Idaho and eastern Washington, USA. These soils develop seasonal perched water tables (PWTs) under the xeric moisture regime of the region. The objective of this study was to utilize a hydropedology approach to examine the linkages between fragipans, PWTs, and catchment-scale hydrological processes such as soil water storage, runoff, and lateral throughflow. A 1.7-ha catchment dominated by Fragixeralfs (Fragic Luvisols) was instrumented with 135 automated shallow wells to monitor PWTs. Soil water content was measured with water content reflectometry probes, and catchment outflow was measured with a flume. A 35 m × 18 m plot was isolated hydrologically from the surrounding hillslope using tile drains and plastic sheeting to measure perched water outflow. Results show that during the wet winter and spring months, the transition from unsaturated to saturated conditions is accompanied by changes in volumetric water storage of only 4–5%. PWT levels are at the surface of ∼ 26–45% of the catchment soils during periods of high rainfall and snowmelt, thereby generating saturation-excess surface runoff from hillslopes. Observed solute movement via subsurface flow is very rapid and ranges between 2.9 and 18.7 m d^− 1 when PWTs are maintained in more-permeable Ap and Bw horizons. Subsurface lateral flow accounts for as much as 90% of the incident precipitation and snowmelt during early spring. Data indicate that the relatively shallow depth to the fragipans and high K_sat in surface soil layers combine to create a very flashy hydrological system characterized by considerable temporal and spatial variation in patterns of saturation-excess runoff.     

Soil formation and the underlying permafrost

The composition and fabric of the upper permafrost layer and its relationships with the permafrost-affected soils developing from the loamy substrates on the interfluves within coastal lowlands of northern Yakutia are considered. The studied area is characterized by the maximum activity of cryogenic processes and a shallow depth of seasonal thawing. The permafrost layer affected by the maximum thawing during the Holocene has a specific morphology attesting to the impact of soil processes on it. In general, the modern soil profile and the underlying permafrost layer can be distinguished as the soil-permafrost complex. It is subdivided into the soil profile, the transient layer, and the intermediate layer. The morphology and properties of the transient layer depend on the character of the soil horizons above the permafrost table. The lateral migration of raw organic substances takes place above the permafrost surface between the particular elements of the cryogenic soil complexes; this material tends to accumulate within the transient layer.     

Condition of Quercus robur L. along a natural Luvisol microtoposequence on loess in Central Belgium

Abstract. This research aims to assess how the variability in soil morphology of Luvisols along a microtopographic sequence influences the condition of pedunculate oak ( Quercus robur ). The condition of 205 pedunculate oaks was observed during one growth season and related to morphological soil properties. Results show that the presence of a consolidated argillic B horizon or fragipan in Luvisols, has a negative influence on the condition of Q.robur .     

Permafrost microbial community traits and functional diversity indicate low activity at in situ thaw temperatures

Previously-frozen stores of organic carbon (C) are now subject to decomposition due to a warming Arctic climate and associated permafrost thaw; however, estimates of the amount of greenhouse gases (GHG) that may be released are not well constrained. Knowing more about the functions of the extant permafrost microbial community will inform this knowledge gap. The exploration of microbial functional traits may be useful to elucidate the relationship between microbial diversity and ecosystem function. We characterized the community traits and functional diversity of the bacterial and Archaeal component of the microbial community from three depths of permafrost, as well as the organic and mineral horizons of the seasonally-thawed active layer, by assessing ‘substrate-use richness,’ ‘substrate preference,’ ‘growth rate,’ ‘and substrate specific growth rate.’ We measured the microbial community response to 31 substrates with an EcoPlate (Biolog, Inc.) assay at three incubation temperatures (1, 10, and 20 °C) using a kinetic approach, and modeled the microbial response to each substrate with a modified logistic growth function. We hypothesized that the permafrost communities would be selected for high functional potential and activity at cold temperatures. Rather, we found that the permafrost community did not have a higher functional diversity or activity at 1 °C than the organic active layer soils. In addition, permafrost communities increased their growth rates with increasing temperature, indicating that the highest incubation temperature (20 °C) was below their temperature optimum for growth. As predicted, the permafrost communities did exhibit temperature dependent substrate preferences. Thus, permafrost microbial communities did not appear to be selected for higher metabolism and the ability to use a broad suite of substrates at low temperatures, which suggests that they may have limited function immediately following thaw when temperatures are near 0 °C. However, changes in community composition or additional permafrost warming will increase the functional capabilities of permafrost microbes to decompose the C stored in those soils.     

Cryometamorphic gleyzems in the taiga of Western Siberia: Chemical and mineralogical properties,ecology, and genesis

Earlier studies showed considerable differences in the properties of automorphic loamy soils developing under middle-taiga vegetation in Western Siberia and on the Russian Plain. It was found that the soils without clear features of textural differentiation are common in Western Siberia. In particular, they are represented by cryometamorphic gleyzems. In this study, we analyze the properties of a cryometamorphic gleyzem in the Vakh area (the Khanty-Mansi Autonomous Okrug). The distribution pattern of clay minerals in the soil profile is analyzed in relation to the specific features of the soil hydrothermic regime. In the upper mineral horizons, the clay fraction is enriched in minerals of the group of soil chlorites and somewhat depleted of labile phyllosilicates. In the cryometamorphic horizon and in the underlying permafrost, the degree of crystallization of the clay minerals somewhat decreases. An even distribution pattern of aluminum oxide in the soil profile is explained by the increased content of Al in the clay fraction from the upper horizons combined with the loss of Al from the coarse fractions (as judged from data on the bulk elemental composition of clay-free samples). These features can be explained by the specificity of the hydrothermic regime of the cryometamorphic gleyzems with late thawing of the soil profile and frequent phase transitions of soil water in the upper humus and middle-profile cryometamorphic horizons.     

磁场辅助冻结对冷冻熟制面条品质的影响

在食品的冻结方式中,磁场是一种新兴的物理方法,其特点是在食品原料中具有很强的穿透性。为改善冷冻熟制面条的品质,该研究探究了磁场辅助冻结对冷冻熟制面条品质的影响。选取不同的磁场强度：3、6、9、12、15、18 Gs,辅助冻结面条。结果表明：磁场强度为12 Gs时,与未加磁场的空白组相比,冷冻熟制面条的冻结时间显著（P<0.05）缩短了4 min、白度显著（P<0.05）增大2.37%、硬度显著（P<0.05）提升7.40%、咀嚼性显著（P<0.05）增大12.41%、剪切力显著（P<0.05）增大19.20%、蒸煮损失显著（P<0.05）降低17.88%、微观结构中冰晶更细小、可冻结水含量显著（P<0.05）降低9.44%、水分分布状态中结合水含量显著（P<0.05）提升10.95%、淀粉分子的峰强度比值降低,老化程度显著（P<0.05）降低0.22%,结果表明,磁场辅助冻结可以改善冷冻熟制面条的品质,12 Gs的磁场强度冻结效果较好。