Titlebook: Soil Geography of the USA; A Diagnostic-Horizon James G. Bockheim Book 2014 Springer International Publishing Switzerland 2014 Diagnostic S

骚扰

Fragipan Horizon, restricting layer has a geogenic origin due to limited weathering or lithological discontinuities. The pedogenic accumulation of clay, carbonates, gypsum, iron, silica, or a combination of these can also lead to the formation of a hard and dense horizon. Some root-restricting layers are the result

sigmoid-colon

Gypsic and Petrogypsic Horizons,v and Verheye 1996), (2) are useful for paleoclimatic interpretations (Khademi and Mermut 2003; Buck and Van Hoesen 2005), (3) enable an understanding of the roles of parent material and climate in soil formation (Carter and Inskeep 1988; Taimeh 1992), (4) elucidate the desertification process (Flor

Coordinate

外表读作

冥界三河

连锁,连串

Anthropic and Plaggen Epipedons: Products of Human Disturbance, Gelisols, Inceptisols, and Mollisols. The pachic horizon may be umbric or mollic, is thick (≥40 to ≥60 cm), contains abundant SOC (≥6 %), and is used only in the Andisols, Inceptisols, and Mollisols.

faultfinder

Mollic Epipedon,50 % from soil erosion and increased decomposition and cropping (Mann 1985; Mikhailova et al. 2000; Liu et al. 2010; Fenton 2012; David et al. 2009). As a result some Mollisols no longer have a mollic epipedon (Veenstra and Burras 2002; Fenton 2012).

肉体

Umbric Epipedon,ighest level in the Umbrisols. Soils with umbric epipedons have been characterized in CA (Popenoe et al. 1992), Pennsylvania (PA; Waltman and Ciolkosz 1995), Wisconsin (Quideau and Bockheim 1996), and North Carolina (NC; Richter et al. 1989; Vepraskas and Caldwell 2008).

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negligence