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Custom Soil Resource Report <br /> Very low:0 to 3 <br /> Low: 3 to 6 <br /> Moderate:6 to 9 <br /> High:9 to 12 <br /> Very high: More than 12 <br /> Backslope <br /> The position that forms the steepest and generally linear, middle portion of a <br /> hillslope. In profile, backslopes are commonly bounded by a convex shoulder <br /> above and a concave footslope below. <br /> Backswamp <br /> A flood-plain Iandform. Extensive, marshy or swampy, depressed areas of flood <br /> plains between natural levees and valley sides or terraces. <br /> Badland <br /> A landscape that is intricately dissected and characterized by a very fine <br /> drainage network with high drainage densities and short, steep slopes and <br /> narrow interfluves. Badlands develop on surfaces that have little or no <br /> vegetative cover overlying unconsolidated or poorly cemented materials (clays, <br /> silts, or sandstones)with, in some cases, soluble minerals, such as gypsum or <br /> halite. <br /> Bajada <br /> A broad, gently inclined alluvial piedmont slope extending from the base of a <br /> mountain range out into a basin and formed by the lateral coalescence of a <br /> series of alluvial fans. Typically, it has a broadly undulating transverse profile, <br /> parallel to the mountain front, resulting from the convexities of component fans. <br /> The term is generally restricted to constructional slopes of intermontane basins. <br /> Basal area <br /> The area of a cross section of a tree, generally referring to the section at breast <br /> height and measured outside the bark. It is a measure of stand density, <br /> commonly expressed in square feet. <br /> Base saturation <br /> The degree to which material having cation-exchange properties is saturated <br /> with exchangeable bases (sum of Ca, Mg, Na, and K), expressed as a <br /> percentage of the total cation-exchange capacity. <br /> Base slope (geomorphology) <br /> A geomorphic component of hills consisting of the concave to linear <br /> (perpendicular to the contour) slope that, regardless of the lateral shape, forms <br /> an apron or wedge at the bottom of a hillside dominated by colluvium and <br /> slope-wash sediments (for example, slope alluvium). <br /> Bedding plane <br /> A planar or nearly planar bedding surface that visibly separates each <br /> successive layer of stratified sediment or rock(of the same or different Iithology) <br /> 33 <br />