Quantification of freeze-thaw related structure in cultivated topsoils using X-ray computer tomography. (Special Issue: Biological, chemical and physical processes in seasonally frozen soils.)

Taina I. A.; Heck R. J.; Deen W.; Ma E. Y. T.

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Quantification of freeze-thaw related structure in cultivated topsoils using X-ray computer tomography. (Special Issue: Biological, chemical and physical processes in seasonally frozen soils.)

机译：使用X射线计算机体层摄影术定量测定耕作表层土壤中的冻融相关结构。（特刊：季节性冻土中的生物，化学和物理过程。）

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The aim of this work was to test the utility of various CT procedures for the investigation of topsoil microstructural features formed under the influence of annual freeze-thaw processes in an agricultural Orthic Gray Brown Luvisol. Assuming that various tillage systems have different propensity to develop and preserve these features, soil cores were collected, prior to spring tillage, from plots characterized by no-till, moldboard plow and disc tillage systems. Micromorphological characterization of CT imagery indicated that soils from no-till treatments exhibited clearly developed platy structures. However, for two of these treatments, quantitative determinations of porosity in binary imagery did not reveal the presence of fine planar mesovoids associated with platy structures. Semivariograms of attenuation, in the three orthogonal axes of the CT imagery, revealed a higher dissimilarity in the vertical direction than in either horizontal direction in all the treatments that were most affected by freeze-thaw processes. The variability of the grayscale values along the soil vertical and horizontal directions were also employed to establish morphometric indices for the platy structure.Digital Object Identifier http://dx.doi.org/10.4141/cjss2012-044

机译：这项工作的目的是测试各种CT程序在研究农业正交灰棕Luvisol中每年冻融过程的影响下形成的表土微结构特征方面的实用性。假定各种耕作系统具有发展和保留这些特征的倾向，在春季耕作之前，从以免耕，mold草犁和圆盘耕作系统为特征的地块收集土壤核心。 CT图像的微观形态特征表明，免耕处理的土壤表现出明显发育的板状结构。然而，对于其中的两种处理，二进制图像中孔隙度的定量测定并没有揭示出与板状结构相关的精细的平面中空。在CT影像的三个正交轴上，衰减的半变异函数显示，在所有受冻融过程影响最大的处理中，垂直方向的相异性高于水平方向的相异性。灰度值沿土壤垂直和水平方向的变化也被用于建立板状结构的形态计量指标。数字对象标识符http://dx.doi.org/10.4141/cjss2012-044

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来源
《Canadian Journal of Soil Science》 |2013年第4期|共21页
作者
Taina I. A.; Heck R. J.; Deen W.; Ma E. Y. T.;
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正文语种 eng
中图分类土壤学;
关键词
X-ray computer tomography; tillage systems; porosity analysis; 3D semivariance; Z-axis profile; platy structure;

机译：X射线计算机体层摄影术;耕作系统;孔隙率分析;3D半方差;Z轴轮廓;板状结构;

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1. Quantification of freeze-thaw related structure in cultivated topsoils using X-ray computer tomography. (Special Issue: Biological, chemical and physical processes in seasonally frozen soils.) [J] . Taina I. A., Heck R. J., Deen W., Canadian Journal of Soil Science . 2013,第4期

机译：使用X射线计算机体层摄影术定量测定耕作表层土壤中的冻融相关结构。（特刊：季节性冻土中的生物，化学和物理过程。）
2. In situ measurement of snowmelt infiltration under various topsoil cap thicknesses on a reclaimed site. (Special Issue: Biological, chemical and physical processes in seasonally frozen soils.) [J] . Christensen A. F., He HaiLong, Dyck M. F., Canadian Journal of Soil Science . 2013,第4期

机译：在填海区不同厚度的表土盖上进行融雪入渗的原位测量。（特刊：季节性冻土中的生物，化学和物理过程。）
3. Crop residue incorporation alters soil nitrous oxide emissions during freeze-thaw cycles. (Special Issue: Biological, chemical and physical processes in seasonally frozen soils.) [J] . Pelster D. E., Chantigny M. H., Rochette P., Canadian Journal of Soil Science . 2013,第4期

机译：作物残渣的掺入在冻融循环中改变了土壤一氧化二氮的排放。（特刊：季节性冻土中的生物，化学和物理过程。）
4. PHYSICAL AND CHEMICAL PROPERTIES OF TOPSOIL USED FOR BIOLOGICAL RESTORATION OF COAL MINE WASTE-BASED STRUCTURES IN THE UPPER SILESIAN COAL BASIN IN POLAND [C] . A. Patrzalek, M. Pozzi National Meetings of the American Society of Mining and Reclamation . 2007

机译：波兰上部Silesian煤盆地煤矿废物结构生物恢复的表土物理和化学性质
5. Special Issue of Photonic Sensors for Chemical Biological and Physical Parameter Detection [O] . Gary Pickrell 2006

机译：用于化学生物和物理参数检测的光子传感器特刊
6. Multiparameter Data Acquisition System with a Mini-Computer (Special Issue on Physical, Chemical and Biological Effects of Gamma Radiation, XVI) [O] . Miyanaga Toshihiro, Ohsawa Takao, Tanaka Seiji, 1976

机译：带有微型计算机的多参数数据采集系统（关于伽马辐射的物理，化学和生物效应的专题，XVI）

Quantification of freeze-thaw related structure in cultivated topsoils using X-ray computer tomography. (Special Issue: Biological, chemical and physical processes in seasonally frozen soils.)

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