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首页> 外文学位 >Evaluating differences in soil appearance from field to photographs to aid in developing soil profile photography guidelines.
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Evaluating differences in soil appearance from field to photographs to aid in developing soil profile photography guidelines.

机译：评估从田野到照片的土壤外观差异，以帮助制定土壤剖面摄影指南。

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摘要

Scope and method of study. The purpose of this study was to (1) evaluate the effect that changing the chosen factors and conditions has on soil appearance in photographs, (2) evaluate color difference using comparisons between spectrophotometric measurements and visual measurements, and (3) develop soil profile photography guidelines. Nine factors (film, distance from lens to soil profile, soil profile surface moisture, camera settings, filters, angles, time of day, night photography (using artificial lighting), and color matching) suspected to affect soil appearance in photographs were studied. Soil profiles representing two soil series (Teller and Grainola) were photographed using a Graflex Crown Graphic large format camera with a 150 mm lens. Distinguishing features and characteristics obtained from field description sheets for each soil were compared to the photographic prints for each factor. Comparisons were made to determine if the chosen factors affected the ability to distinguish each soil's observable attributes. Spectrophotometric measurements were taken of both a 22 x 28 cm Munsell color sheet and the prints containing the same sheet.; Findings and conclusions. All factors affected overall soil color. Use of different films affected the ability to clearly see key soil features. Porta 160 NC film most accurately represented the two soils. The distance that captured the soil solum plus 25% of the soil solum depth was chosen as the best distance that would allow viewing all the soil's attributes. Water sprayed on the soil profile affected how pronounced the soil features appeared. Aperture and shutter speed settings as well as filters affected the clarity of features. A 90° angle between camera lens and soil profile resulted in no distortion of features. The time of day chosen affected shadowing on the soil profile. Photographs taken at night using artificial lighting most clearly expressed the features and characteristics of both soils. Color matching to a standard resulted in accurate representations of soil color. Spectrophotometric results indicated that photographs of soil profiles are redder in hue than the soil the photographs represent. Spectrophotometric measurements did not consistently agree with visual measurements. Soil profile photography guidelines were suggested.
机译：研究范围和方法。这项研究的目的是（1）评估改变所选因素和条件对照片中土壤外观的影响；（2）使用分光光度法测量值和目测值之间的比较评估色差；以及（3）进行土壤剖面摄影准则。研究了九个影响照片外观的因素（胶片，镜头到土壤剖面的距离，土壤剖面的表面湿度，相机设置，滤镜，角度，一天中的时间，夜间摄影（使用人工照明）和色彩匹配）。使用配有150 mm镜头的Graflex Crown Graphic大幅面相机拍摄了代表两个土壤系列（Teller和Grainola）的土壤剖面。从田间描述表获得的每种土壤的区别特征与特征与每种因素的照相照片进行比较。进行比较以确定所选因素是否影响区分每种土壤的可观察属性的能力。分光光度法测量22 x 28厘米的孟塞尔彩色纸和包含相同纸的印刷品。结论和结论。所有因素都会影响土壤的整体颜色。使用不同的胶片会影响清晰看到关键土壤特征的能力。 Porta 160 NC胶片最准确地代表了两种土壤。选择捕获土壤贫民窟的距离加上土壤贫民窟深度的25％，作为可以查看所有土壤属性的最佳距离。喷洒在土壤剖面上的水影响土壤特征的表现。光圈和快门速度设置以及滤镜会影响功能的清晰度。相机镜头和土壤剖面之间的90°角不会导致特征变形。选择的一天中的时间会影响土壤剖面上的阴影。晚上使用人工照明拍摄的照片最清楚地表达了两种土壤的特征。符合标准的颜色可准确表示土壤的颜色。分光光度法的结果表明，土壤剖面照片的色调比照片所代表的土壤更红。分光光度测量与视觉测量不一致。建议使用土壤剖面摄影指南。

著录项

  • 作者

    Ponte, Kelly J.;

  • 作者单位

    Oklahoma State University.;

  • 授予单位 Oklahoma State University.;
  • 学科 Agriculture Soil Science.
  • 学位 Ph.D.
  • 年度 2001
  • 页码 209 p.
  • 总页数 209
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土壤学;
  • 关键词

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