Thomas Loveland (Former Employee)
Science and Products
Filter Total Items: 140
National Wildlife Refuge System: Ecological context and integrity
The Refuge Improvement Act of 1997 established a statutory mission and management standards for the National Wildlife Refuge system. The U.S. Fish and Wildlife Service subsequently issued a policy for ensuring the biological integrity, diversity, and environmental health of the system. This policy requires understanding the management objectives of each refuge in a local, regional, and national co
Authors
J. M. Scott, T. Loveland, K. Gergely, J. Strittholt, N. Staus
U.S. land cover and land use change—1973-2000
No abstract available.
Authors
D.E. Napton, Thomas R. Loveland
Observing and monitoring land use and land cover change
This chapter contains sections titled:Detecting Change at Multiple Spatial and Temporal ScalesDefining Observation and MonitoringTools for Change Observation and MonitoringMonitoring Change in Land CoverThe Characteristics of ChangeIntegrated Analysis of Change: Case Examples and Studies ChallengesAdvancing the State-of-the-Science in Change Observation and Monitoring
Authors
Thomas R. Loveland, R. DeFries
The effects of habitat resolution on models of avian diversity and distributions: A comparison of two land-cover classifications
Quantifying patterns is a key element of landscape analysis. One aspect of this quantification of particular importance to landscape ecologists is the classification of continuous variables to produce categorical variables such as land-cover type or elevation stratum. Although landscape ecologists are fully aware of the importance of spatial resolution in ecological investigations, the potential i
Authors
Joshua J. Lawler, Raymond. J. O’Connor, Carolyn T. Hunsaker, K. Bruce Jones, Thomas R. Loveland, Denis White
Using an ecoregion framework to analyze land-cover and land-use dynamics.
The United States has a highly varied landscape because of wide-ranging differences in combinations of climatic, geologic, edaphic, hydrologic, vegetative, and human management (land use) factors. Land uses are dynamic, with the types and rates of change dependent on a host of variables, including land accessibility, economic considerations, and the internal increase and movement of the human popu
Authors
Alisa L. Gallant, Thomas R. Loveland, Terry L. Sohl, D.E. Napton
Contemporary carbon dynamics in terrestrial ecosystems in the Southeastern Plains of the United States
Quantifying carbon dynamics over large areas is frequently hindered by the lack of consistent, high-quality, spatially explicit land use and land cover change databases and appropriate modeling techniques. In this paper, we present a generic approach to address some of these challenges. Land cover change information in the Southeastern Plains ecoregion was derived from Landsat data acquired in 197
Authors
S. Liu, Thomas R. Loveland, R.M. Kurtz
Detecting trends in landscape pattern metrics over a 20-year period using a sampling-based monitoring programme
Temporal trends in landscape pattern metrics describing texture, patch shape and patch size were evaluated in the US Middle Atlantic Coastal Plain Ecoregion. The landscape pattern metrics were calculated for a sample of land use/cover data obtained for four points in time from 1973-1992. The multiple sampling dates permit evaluation of trend, whereas availability of only two sampling dates allows
Authors
J. A. Griffith, S.V. Stehman, Terry L. Sohl, Thomas R. Loveland
Statistical sampling to characterize recent United States land-cover change
The U.S. Geological Survey, in conjunction with the U.S. Environmental Protection Agency, is conducting a study focused on developing methods for estimating changes in land-cover and landscape pattern for the conterminous United States from 1973 to 2000. Eleven land-cover and land-use classes are interpreted from Landsat imagery for five sampling dates. Because of the high cost and potential effec
Authors
S.V. Stehman, Terry L. Sohl, Thomas R. Loveland
Land use and land cover change in the North Central Appalachians ecoregion
The North Central Appalachians ecoregion, spanning northern Pennsylvania and southern New York, has a long history of land use and land cover change. Turn-of-the-century logging dramatically altered the natural landscape of the ecoregion, but subsequent regeneration returned the ecoregion to a forest dominated condition. To understand contemporary land use and land cover changes, the U.S. Geologic
Authors
D.E. Napton, Terry L. Sohl, Roger F. Auch, Thomas R. Loveland
Landscape trends in Mid-Atlantic and Southeastern United States ecoregions
Landscape pattern and composition metrics are potential indicators for broad-scale monitoring of change and for relating change to human and ecological processes. We used a probability sample of 20-km × 20-km sampling blocks to characterize landscape composition and pattern in five US ecoregions: the Middle Atlantic Coastal Plain, Southeastern Plains, Northern Piedmont, Piedmont, and Blue Ridge Mo
Authors
J. A. Griffith, S.V. Stehman, Thomas R. Loveland
Making science for sustainable development more policy relevant: New tools for analysis
No abstract available.
Authors
Ashbindu Singh, B. Moldan, Thomas Loveland
A strategy for estimating the rates of recent United States land-cover changes
Information on the rates of land-use and land-cover change is important in addressing issues ranging from the health of aquatic resources to climate change. Unfortunately, there is a paucity of information on land-use and land-cover change except at very local levels. We describe a strategy for estimating land-cover change across the conterminous United States over the past 30 years. Change rates
Authors
Thomas R. Loveland, Terry L. Sohl, S.V. Stehman, Alisa L. Gallant, K. L. Sayler, D.E. Napton
Science and Products
Filter Total Items: 140
National Wildlife Refuge System: Ecological context and integrity
The Refuge Improvement Act of 1997 established a statutory mission and management standards for the National Wildlife Refuge system. The U.S. Fish and Wildlife Service subsequently issued a policy for ensuring the biological integrity, diversity, and environmental health of the system. This policy requires understanding the management objectives of each refuge in a local, regional, and national co
Authors
J. M. Scott, T. Loveland, K. Gergely, J. Strittholt, N. Staus
U.S. land cover and land use change—1973-2000
No abstract available.
Authors
D.E. Napton, Thomas R. Loveland
Observing and monitoring land use and land cover change
This chapter contains sections titled:Detecting Change at Multiple Spatial and Temporal ScalesDefining Observation and MonitoringTools for Change Observation and MonitoringMonitoring Change in Land CoverThe Characteristics of ChangeIntegrated Analysis of Change: Case Examples and Studies ChallengesAdvancing the State-of-the-Science in Change Observation and Monitoring
Authors
Thomas R. Loveland, R. DeFries
The effects of habitat resolution on models of avian diversity and distributions: A comparison of two land-cover classifications
Quantifying patterns is a key element of landscape analysis. One aspect of this quantification of particular importance to landscape ecologists is the classification of continuous variables to produce categorical variables such as land-cover type or elevation stratum. Although landscape ecologists are fully aware of the importance of spatial resolution in ecological investigations, the potential i
Authors
Joshua J. Lawler, Raymond. J. O’Connor, Carolyn T. Hunsaker, K. Bruce Jones, Thomas R. Loveland, Denis White
Using an ecoregion framework to analyze land-cover and land-use dynamics.
The United States has a highly varied landscape because of wide-ranging differences in combinations of climatic, geologic, edaphic, hydrologic, vegetative, and human management (land use) factors. Land uses are dynamic, with the types and rates of change dependent on a host of variables, including land accessibility, economic considerations, and the internal increase and movement of the human popu
Authors
Alisa L. Gallant, Thomas R. Loveland, Terry L. Sohl, D.E. Napton
Contemporary carbon dynamics in terrestrial ecosystems in the Southeastern Plains of the United States
Quantifying carbon dynamics over large areas is frequently hindered by the lack of consistent, high-quality, spatially explicit land use and land cover change databases and appropriate modeling techniques. In this paper, we present a generic approach to address some of these challenges. Land cover change information in the Southeastern Plains ecoregion was derived from Landsat data acquired in 197
Authors
S. Liu, Thomas R. Loveland, R.M. Kurtz
Detecting trends in landscape pattern metrics over a 20-year period using a sampling-based monitoring programme
Temporal trends in landscape pattern metrics describing texture, patch shape and patch size were evaluated in the US Middle Atlantic Coastal Plain Ecoregion. The landscape pattern metrics were calculated for a sample of land use/cover data obtained for four points in time from 1973-1992. The multiple sampling dates permit evaluation of trend, whereas availability of only two sampling dates allows
Authors
J. A. Griffith, S.V. Stehman, Terry L. Sohl, Thomas R. Loveland
Statistical sampling to characterize recent United States land-cover change
The U.S. Geological Survey, in conjunction with the U.S. Environmental Protection Agency, is conducting a study focused on developing methods for estimating changes in land-cover and landscape pattern for the conterminous United States from 1973 to 2000. Eleven land-cover and land-use classes are interpreted from Landsat imagery for five sampling dates. Because of the high cost and potential effec
Authors
S.V. Stehman, Terry L. Sohl, Thomas R. Loveland
Land use and land cover change in the North Central Appalachians ecoregion
The North Central Appalachians ecoregion, spanning northern Pennsylvania and southern New York, has a long history of land use and land cover change. Turn-of-the-century logging dramatically altered the natural landscape of the ecoregion, but subsequent regeneration returned the ecoregion to a forest dominated condition. To understand contemporary land use and land cover changes, the U.S. Geologic
Authors
D.E. Napton, Terry L. Sohl, Roger F. Auch, Thomas R. Loveland
Landscape trends in Mid-Atlantic and Southeastern United States ecoregions
Landscape pattern and composition metrics are potential indicators for broad-scale monitoring of change and for relating change to human and ecological processes. We used a probability sample of 20-km × 20-km sampling blocks to characterize landscape composition and pattern in five US ecoregions: the Middle Atlantic Coastal Plain, Southeastern Plains, Northern Piedmont, Piedmont, and Blue Ridge Mo
Authors
J. A. Griffith, S.V. Stehman, Thomas R. Loveland
Making science for sustainable development more policy relevant: New tools for analysis
No abstract available.
Authors
Ashbindu Singh, B. Moldan, Thomas Loveland
A strategy for estimating the rates of recent United States land-cover changes
Information on the rates of land-use and land-cover change is important in addressing issues ranging from the health of aquatic resources to climate change. Unfortunately, there is a paucity of information on land-use and land-cover change except at very local levels. We describe a strategy for estimating land-cover change across the conterminous United States over the past 30 years. Change rates
Authors
Thomas R. Loveland, Terry L. Sohl, S.V. Stehman, Alisa L. Gallant, K. L. Sayler, D.E. Napton