Forest Soil Variability on Northeastern Flood Plains
1980
Mollitor, A. V. | Leaf, A. L. | Morris, L. A.
Flood plain areas in eastern New York and western Vermont were sampled for 19 surface and 19 subsurface soil properties. On the basis of physiography, two site types were identified for stratification of data: (i) lateral accretion deposits and (ii) vertical accretion deposits. Nested analyses of variance of the 38 soil properties of these alluvial Entisols and Inceptisols shows that, of the variables measured, all with the exception of surface K concentration, K and P content and subsurface K content were significantly less variable within sample plots than among plots. It also shows that surface reaction, P concentration and P content, subsurface clay, silt plus clay, bulk density, reaction, P concentration, Ca concentration, and P content were less variable within types than between types. Sample size requirements to estimate plot means for each property were calculated. Surface soils tend to be less variable than subsurface soils and vertical accretion soils are less variable than lateral accretion soils.
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