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pro vyhledávání: '"Frey, H. Thomas"'
Autor:
Frey, H. Thomas
Publikováno v:
Professional Geographer; Aug1982, Vol. 34 Issue 3, p342-345, 4p
Autor:
Frey, H. Thomas
Major primary uses of the U.S. land area of 2,264 million acres in 1978 were: cropland, 471 million acres; grassland pasture and range, 587 million acres; forest land, 703 million acres; transportation, recreation, and other special uses, 158 million
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88d04f3d61fcb222e2f391fe97846635
Autor:
Frey, H. Thomas
The United States has a land area of 2,264 million acres. The major uses of this acreage in 1974 were: cropland, 465 million acres; grassland pasture and range, 598 million acres; forest land, 718 million acres; urban, recreational, and other special
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84b7f41d152c3a73e88a5b19811a37d0
Autor:
Frey, H. Thomas, Hexem, Roger W.
Major uses of the Nation's 2,265 million acres of land in 1982 were: cropland, 469 million acres; grassland pasture and range, 597 million acres; forest land (exclusive of areas in special- purpose uses), 655 million acres; special uses, 270 million
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10b30c890b3cb81686094d052a3ea751
Autor:
Frey, H. Thomas, Hexem, Roger W.
Preliminary State-by-State estimates of the major uses of land in the United States in 1982 and a brief analysis of changes and trends in land use at the national level are presented. Cropland actually used for crops reached a record 390 million acre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15296e5af09fb37a641912b9a02c5114
Autor:
Frey, H. Thomas
Acreages of cropland harvested as reported by the periodic Censuses of Agriculture peaked in 60 percent of the counties in the Great Plains by 1929 and in 90 percent by 1954. When measured in terms of the difference between the sum of county peak acr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e1160ef8a2e86ba9c5f89941ac9d4dd
Autor:
Frey, H. Thomas, Otte, Robert C.
After more than two decades of agricultural surpluses and Federal supply management programs, strong demand for food products in 1973 resulted in suspension of the Federal land set-aside programs. By 1974, virtually all acreage formerly diverted had
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69908a348d7e95d0de13484bebb43769
Excerpt from report summary: Nearly three-fifths of the land area of the United States is used to produce crops and livestock. More than one-fifth is ungrazed forest land; less than 3 percent is in urban and related intensive uses. Areas designated p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18e29c527ac4203a1340e16854dc1581
Autor:
Frey, H. Thomas
This report summarizes the extent and distribution of major land uses in the United States and, by comparison with earlier land use inventories, documents the changes and trends in land utilization. The entire land area of the country is broadly clas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e4e7de3095f86477fb68cb7b4105e43
Autor:
Frey, H. Thomas, Dill, Henry W.
Special aerial photographic imagery of the Southern Mississippi Alluvial Valley taken in I969 was compared with conventional photographic imagery of the region taken in I950 to obtain data on land clearing, land use, and land use change. In 1969, cro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f4c2d44b71b4726af88245f0bac41d4