Philip J Gersmehl
Biographic Data
| ID | 1685661 |
|---|---|
| NAME | Philip J Gersmehl |
| GIVEN NAMES | Philip J |
| FAMILY NAME | Gersmehl |
| SIGNATURE | GERSMEHL P J |
| AFFILIATIONS | University of Minnesota |
| VERIFIED | No |
| TOTAL WORKS | 11 |
| TOTAL CITATIONS | 18 |
| WORKS AS AUTHOR | 11 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1976 |
| LATEST PUBLICATION YEAR | 1993 |
| H-INDEX | 3 |
Activities and Readings in the Geography of the United States
Activities and Readings in the Geography of the United States Get access Phil Gersmehl Phil Gersmehl Search for other works by this author on: Oxford Academic Google Scholar OAH Magazine of History, Volume 7, Issue 3, Spring 1993, Pages 69–72, https://doi.org/10.1093/maghis/7.3.69 Published: 01 March 1993
TVA and the Tellico Dam 1936-1979
Regional Differences in the Validity of the Concept of Innate Soil Productivity
A reliable index of “innate soil productivity,'’perhaps stored in a computerized geographic information system, would be of great value in choosing crops or tillage techniques, designating prime farmland, assessing land for tax purposes, aligning utility corridors, targeting price-support and soil conservation programs, and making other land use decisions. One problem with the creation of a productivity index is the fact that a given tract of lan…
Migration Models for Grasses in the American Midcontinent
This paper uses graphic and geographic migration models to examine the relationship between present dominance patterns and presumed source areas for six important native grass species in the Midcontinent Plains. The study has five parts: (1) describing the theoretical migration patterns of grasses as they spread out from a source area: (2) determining the dominant grasses on medium-textured, well-drained, upland range sites in a large sample of c…
Mountaineers and Rangers
Maps in Landscape Interpretation
ions of potential vegetation and to look more closely at existing vegetation. The most common mapping technique has been some variation on the time-worn digital or fractional code system, wherein broad patterns may be depicted with colors or screens while a printed sequence of numbers or letters is used to communicate key information for local areas on the map (Figure 5). Various cartographers have tried to make their maps easier to read by emplo…
Agriculture in the Third World
No-Till Farming
M /ORE than half of the corn in some parts of the United States emerges from essentially undisturbed soil. Plows, disks, harrows, cultivators, giant tractors, and the other heavy weapons of conventional mechanized farming are absent or lie idle, while slot planters and spray rigs assume the full burden of land preparation and weed control.1 The system is most commonly known as no-till farming, although it masquerades beneath a multitude of names …
Soil Taxonomy and Mapping∗
The United States Department of Agriculture has developed and formally adopted a new Soil Taxonomy (still popularly known as the Seventh Approximation). Existing maps of soils according to the Seventh Approximation are confusing and inadequate because the data base was weak at the time of compilation and the cartographic technique of regionalization is a relic of an obsolete conception of soil. Dot maps are more appropriate depictions of soils be…
Man-induced soil erosion of the Southern Piedmont
An Alternative Biogeography∗
A complex set of forces, both external and internal, governs the movements of nutrients through the environment. The circulation of mineral elements can be modeled as a system of compartments and transfer pathways. A simple version of this model has two valuable pedagogical uses. First, the idea of an equilibrium mineral cycle illustrates the connectedness of the environment and the difficulty of altering only one part of an ecosystem. Second, th…
Man-induced soil erosion of the Southern Piedmont
Migration Models for Grasses in the American Midcontinent
This paper uses graphic and geographic migration models to examine the relationship between present dominance patterns and presumed source areas for six important native grass species in the Midcontinent Plains. The study has five parts: (1) describing the theoretical migration patterns of grasses as they spread out from a source area: (2) determining the dominant grasses on medium-textured, well-drained, upland range sites in a large sample of c…
Agriculture in the Third World
An Alternative Biogeography∗
A complex set of forces, both external and internal, governs the movements of nutrients through the environment. The circulation of mineral elements can be modeled as a system of compartments and transfer pathways. A simple version of this model has two valuable pedagogical uses. First, the idea of an equilibrium mineral cycle illustrates the connectedness of the environment and the difficulty of altering only one part of an ecosystem. Second, th…
Mountaineers and Rangers
Soil Taxonomy and Mapping∗
The United States Department of Agriculture has developed and formally adopted a new Soil Taxonomy (still popularly known as the Seventh Approximation). Existing maps of soils according to the Seventh Approximation are confusing and inadequate because the data base was weak at the time of compilation and the cartographic technique of regionalization is a relic of an obsolete conception of soil. Dot maps are more appropriate depictions of soils be…
No-Till Farming
M /ORE than half of the corn in some parts of the United States emerges from essentially undisturbed soil. Plows, disks, harrows, cultivators, giant tractors, and the other heavy weapons of conventional mechanized farming are absent or lie idle, while slot planters and spray rigs assume the full burden of land preparation and weed control.1 The system is most commonly known as no-till farming, although it masquerades beneath a multitude of names …
Man-induced soil erosion of the Southern Piedmont
An Alternative Biogeography∗
A complex set of forces, both external and internal, governs the movements of nutrients through the environment. The circulation of mineral elements can be modeled as a system of compartments and transfer pathways. A simple version of this model has two valuable pedagogical uses. First, the idea of an equilibrium mineral cycle illustrates the connectedness of the environment and the difficulty of altering only one part of an ecosystem. Second, th…
Soil Taxonomy and Mapping∗
The United States Department of Agriculture has developed and formally adopted a new Soil Taxonomy (still popularly known as the Seventh Approximation). Existing maps of soils according to the Seventh Approximation are confusing and inadequate because the data base was weak at the time of compilation and the cartographic technique of regionalization is a relic of an obsolete conception of soil. Dot maps are more appropriate depictions of soils be…
No-Till Farming
M /ORE than half of the corn in some parts of the United States emerges from essentially undisturbed soil. Plows, disks, harrows, cultivators, giant tractors, and the other heavy weapons of conventional mechanized farming are absent or lie idle, while slot planters and spray rigs assume the full burden of land preparation and weed control.1 The system is most commonly known as no-till farming, although it masquerades beneath a multitude of names …
Agriculture in the Third World
Maps in Landscape Interpretation
ions of potential vegetation and to look more closely at existing vegetation. The most common mapping technique has been some variation on the time-worn digital or fractional code system, wherein broad patterns may be depicted with colors or screens while a printed sequence of numbers or letters is used to communicate key information for local areas on the map (Figure 5). Various cartographers have tried to make their maps easier to read by emplo…
Mountaineers and Rangers
Migration Models for Grasses in the American Midcontinent
This paper uses graphic and geographic migration models to examine the relationship between present dominance patterns and presumed source areas for six important native grass species in the Midcontinent Plains. The study has five parts: (1) describing the theoretical migration patterns of grasses as they spread out from a source area: (2) determining the dominant grasses on medium-textured, well-drained, upland range sites in a large sample of c…
Regional Differences in the Validity of the Concept of Innate Soil Productivity
A reliable index of “innate soil productivity,'’perhaps stored in a computerized geographic information system, would be of great value in choosing crops or tillage techniques, designating prime farmland, assessing land for tax purposes, aligning utility corridors, targeting price-support and soil conservation programs, and making other land use decisions. One problem with the creation of a productivity index is the fact that a given tract of lan…
TVA and the Tellico Dam 1936-1979
Activities and Readings in the Geography of the United States
Activities and Readings in the Geography of the United States Get access Phil Gersmehl Phil Gersmehl Search for other works by this author on: Oxford Academic Google Scholar OAH Magazine of History, Volume 7, Issue 3, Spring 1993, Pages 69–72, https://doi.org/10.1093/maghis/7.3.69 Published: 01 March 1993
Geography (9 works) · Archaeology (4 works) · Environmental Science (4 works) · Agriculture (3 works) · Biology (3 works) · Computer Science (3 works) · Ecology (3 works) · Ecology (3 works) · Economics (3 works) · American Environmental and Regional History (2 works)