YearbookU.S. Government Printing Office, 1983 - Agriculture |
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Page 14
... ecosys- tem , we may damage the ecosys- tem or we may use management practices to improve conditions . Soil properties change in re- sponse to management of the environment . When people move from one agricultural place to another ...
... ecosys- tem , we may damage the ecosys- tem or we may use management practices to improve conditions . Soil properties change in re- sponse to management of the environment . When people move from one agricultural place to another ...
Page 108
... ecosys- tem to live together harmoni- ously is very delicately balanced . As far as most of our native wild- life is concerned , this is not so . When populations of coyotes , ground squirrels , and other wild- life pests are controlled ...
... ecosys- tem to live together harmoni- ously is very delicately balanced . As far as most of our native wild- life is concerned , this is not so . When populations of coyotes , ground squirrels , and other wild- life pests are controlled ...
Page 160
... ecosys- tems . The forester becomes the resource manager Senator Hum- phrey called for . Getting the desired mix of high quality forest benefits to serve the American people at low costs is the challenge of forest man- agement ...
... ecosys- tems . The forester becomes the resource manager Senator Hum- phrey called for . Getting the desired mix of high quality forest benefits to serve the American people at low costs is the challenge of forest man- agement ...
Page 261
... ecosys- tems could be lost . But this need not occur , even where the domi- nant land use is agriculture , if proper measures are used to preserve them and to restore them where necessary . Law Institute , Suite 600 , 1346 Connecticut ...
... ecosys- tems could be lost . But this need not occur , even where the domi- nant land use is agriculture , if proper measures are used to preserve them and to restore them where necessary . Law Institute , Suite 600 , 1346 Connecticut ...
Page 276
... ecosys- tem cannot be overestimated . Public awareness of the value of these tidal areas led to passage of legislation in both Maryland ( 1970 ) and Virginia ( 1972 ) . Intent of the Maryland and Virginia Wetlands Acts is to conserve ...
... ecosys- tem cannot be overestimated . Public awareness of the value of these tidal areas led to passage of legislation in both Maryland ( 1970 ) and Virginia ( 1972 ) . Intent of the Maryland and Virginia Wetlands Acts is to conserve ...
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acid acid rain agement agricultural anadromous animals annual aquifers birds California catfish channel catfish climate coastal costs County coyotes crease crop Douglas-fir duce economic ecosys ecosystems energy environment erosion estry farm farmers Federal feet fish and wildlife flood forage forest land Forest Service forestry grass grasslands grazing ground water ground-water growth habitat hardwood harvest improved inches increase insects irrigation Kirtland's Kirtland's Warbler lakes livestock logs marshes McCabe McHenry County ment million acres mountain National Forests natural resources nesting nutrients occur Ogallala Aquifer percent pest pine Plains pollution ponds population prairie precipitation predators problems production range rangelands recreation reduce region River runoff saline shrubs Soil Conservation sources species stream surface tephra Texas timber tion tional tive trees ture U.S. Forest Service United urban forest USDA vegetation warbler wetlands wild turkey wilderness areas winter wood