Two 2.8-ha tracts lay side-by-side on a slope in East Texas. The slopes range from 7.5precent in the NE to 3.5precent in the SE for the upper tract, and from 6.5precent to level for the lower tract. The soil on these two tracts is the Kurth series with fine sandy loam in the surface 75 cm depth with permeability about 1.5-5.0 cm/hr. The upper soil is underlain by a sandy clay loam at about 75-125 cm deep with permeability as low as 0.015 cm/hr. It is the most erodible soil in the area and is covered by mature southern pines with scattered hardwoods.
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机译：两个2.8公顷土地并排放置在东德克萨斯州的一个斜坡上。上部区域的斜率从NE的7.5％到SE的3.5％，从下部区域的6.5％到水平。这两个区域的土壤是Kurth系列，其表层深度为75 cm的细砂质壤土，渗透率约为1.5-5.0 cm / hr。上层土壤被约75-125 cm深的砂质壤土覆盖，渗透率低至0.015 cm / hr。它是该地区最易侵蚀的土壤，被成熟的南部松树覆盖，上面散布着硬木。
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