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A study of soil-landscape patterns based upon a digital elevation model.

机译：基于数字高程模型的土壤-景观格局研究。

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Semi-detailed soil surveys often lack details on landscape position of specific soils. The primary objective was to investigate a method of improving survey detail, by providing soil position information derived from a digital elevation model (DEM). Slope magnitudes determined from the DEM were underestimated compared to those from the soil survey. The pattern of DEM-derived slope breaks and soil survey slope classes did not correspond along unidirectional transects, but did when the entire study area was considered. Potential depressions were located on the DEM using a combination of profile and plan curvature. Proportions of depressions were significantly different from the proportions of Gleysols and gleyed subgroups in each soil survey polygon. These depressions may be considered centre locations of actual landscape depressions. Depressions in open areas could be located with DEM data alone, but not those within treed areas. Satellite image data provided information on soil wetness in both areas. Using this information, possible depressions in treed areas were identified. Positioning soils in the landscape using both the DEM and satellite imagery was limited by the relatively coarse 25 m spatial resolution.
机译：半详细土壤调查通常缺乏有关特定土壤景观位置的详细信息。主要目的是研究一种通过提供从数字高程模型（DEM）得出的土壤位置信息来改善调查细节的方法。与土壤调查相比，DEM确定的斜坡幅度被低估了。 DEM衍生的边坡折断的模式和土壤调查边坡类别沿单向样线并不对应，但考虑到整个研究区域时，情况却是如此。使用轮廓和平面曲率的组合将潜在的凹陷定位在DEM上。在每个土壤调查多边形中，凹陷的比例与Gleysols和gleyed亚组的比例显着不同。这些洼地可以被认为是实际景观洼地的中心位置。开阔地带的凹陷可能仅靠DEM数据定位，而树状区域内则不然。卫星图像数据提供了两个地区的土壤湿度信息。利用这些信息，确定了树木繁茂的地区可能存在的洼地。使用DEM和卫星图像在景观中定位土壤受到相对较粗糙的25 m空间分辨率的限制。

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