Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Michael E. Folkoff"'
Publikováno v:
Botany. 101:75-87
Given the long-term human habitation and prolific land use change trajectories in the eastern United States, few remnants of the pre-European settlement Mid-Atlantic forest remain on the Atlantic Coastal Plain. This study utilized metes and bounds wi
Publikováno v:
Human Ecology. 47:27-38
Multiple historic sources were used to reconstruct the forests of the Chesapeake at the time of European colonization. Early written records (1588–1699) show forests composed of hardwoods and conifers; the most commonly reported hardwoods are oak (
Autor:
Christopher H. Briand, Keirsten T. Baker, Chelsi M. Rose, Abigayle C. Mrozinski, Amanda S. Evans, Mercedes E. Harris, Philip D. Anderson, Ashley E. Hawkins, S. Geleta, Michael E. Folkoff, Gloria E. Seho-Ahiable, Elizabeth A. B. Emmert
Publikováno v:
Applied Soil Ecology. 161:103824
We compared microbial enzymatic activity and community composition in small, undisturbed, family cemetery soils and surrounding agricultural fields or suburban lawns to determine the effect of land use changes on soil biology. We collected soil from
Publikováno v:
Human Ecology. 42:625-635
Over the past ca. 350 years, anthropogenic activities on the Mid-Atlantic Coastal Plain have caused considerable soil erosion and degradation due to deforestation, intensive agriculture, and poor if any soil conservation practices. Early colonial des
Publikováno v:
Environmental Mathematics in the Classroom. :247-254
Publikováno v:
Physical Geography. 2:116-124
A curve-fit model of the relationship between soil pH (A horizon) and climate forms the basis of a map of predicted pH for the conterminous United States. This map was produced with the aid of a large climatic data base, a computer mapping program an
Autor:
Michael E. Folkoff
Publikováno v:
Physical Geography. 8:82-97
Soil acidity was sampled for the B horizon of 53 United States soils and compared with climatic variables, including soil water balance variables, and soil texture variables. Simple correlations indicated that B horizon pH (pHB) varied mainly with th
Autor:
Vernon Meentemeyer, Michael E. Folkoff
Publikováno v:
Earth Surface Processes and Landforms. 10:621-633
The concentrations (per cent) of secondary clay minerals (mica, vermiculite, montmorillonite, chlorite and kaolinite) in the A-horizon of 99 soil sample sites were entered into a cluster program to determine the common clay mineral assemblages found
Autor:
Michael E. Folkoff, Vernon Meentemeyer
Publikováno v:
Annals of the Association of American Geographers. 77:635-650
Concentrations of secondary clay minerals (mica, vermiculite, montmorillonite, chlorite, and kaolinite) in the A horizon of 99 U.S. soils were used in a stepwise regression with climate, parent material, and soil property variables to develop models
Publikováno v:
Earth Surface Processes and Landforms. 8:79-88
Mean growing season soil PCO2 data were obtained for 19 regions of the world in nine countries. Bivariate and multiple linear regression analysis with soil log(PCO2) as the dependent variable and TEMP, PRECIP, log(AET), and log(PET) as the four clima