A5033039379- Land Use and Ecosystem Services
- Remote Sensing in Agriculture
- Atmospheric and Environmental Gas Dynamics
- Rangeland and Wildlife Management
- Fire effects on ecosystems
- Species Distribution and Climate Change
- Hydrology and Watershed Management Studies
- Forest Management and Policy
- Plant Water Relations and Carbon Dynamics
- Climate variability and models
- Peatlands and Wetlands Ecology
- Plant Ecology and Soil Science
- Remote Sensing and Land Use
- Soil Geostatistics and Mapping
- Economic and Environmental Valuation
- Climate change and permafrost
- Environmental Changes in China
- Geographic Information Systems Studies
- Soil Carbon and Nitrogen Dynamics
- Botany, Ecology, and Taxonomy Studies
- Groundwater flow and contamination studies
- Bioenergy crop production and management
- Archaeology and Natural History
- Soil erosion and sediment transport
- Aeolian processes and effects
United States Geological Survey
2013-2023
Earth Resources Observation and Science Center
2013-2022
University of Nebraska–Lincoln
2020
University of Sioux Falls
2009-2015
Arctic Slope Regional (United States)
2010
Peking University
2010
Leidos (United States)
2007
Science Applications International Corporation (United States)
2003-2007
RTX (United States)
2002-2003
Land-cover change in the conterminous United States was quantified by interpreting from satellite imagery for a sample stratified 84 ecoregions. Gross and net changes between 11 land-cover classes were estimated 5 dates of Landsat (1973, 1980, 1986, 1992, 2000). An 673,000 km2(8.6%) States' land area experienced cover at least one time during study period. Forest largest decline any class with 97,000 km2 lost 1973 2000. The large forest prominent two regions highest percent overall change,...
Global environmental change scenarios have typically provided projections of land use and cover for a relatively small number regions or using coarse resolution spatial grid, only few major sectors. The coarseness global projections, in both thematic dimensions, often limits their direct utility at scales useful management. This paper describes methods to downscale land-use land-cover from the Intergovernmental Panel on Climate Change's Special Report Emission Scenarios ecological...
Information on future land‐use and land‐cover (LULC) change is needed to analyze the impact of LULC ecological processes. The U.S. Geological Survey has produced spatially explicit, thematically detailed projections for conterminous United States. Four qualitative quantitative scenarios were developed, with characteristics consistent Intergovernmental Panel Climate Change (IPCC) Special Report Emission Scenarios (SRES). four quantified (A1B, A2, B1, B2) served as input forecasting (FORE‐SCE)...
The landscape of the conterminous United States has changed dramatically over last 200 years, with agricultural land use, urban expansion, forestry, and other anthropogenic activities altering cover across vast swaths country. While use (LULC) models have been developed to model potential future LULC change, few efforts focused on recreating historical landscapes. Researchers at US Geological Survey used a wide range data sources spatially explicit modeling framework change in from 1992 back...
A wide variety of ecological applications require spatially explicit, historic, current, and projected land use cover data. The U.S. Land Cover Trends project is analyzing contemporary (1973–2000) land-cover change in the conterminous United States. newly developed FORE-SCE model used data theoretical, statistical, deterministic modeling techniques to future through 2020 for multiple plausible scenarios. Projected proportions were initially developed, then sited on lands with highest...
In addition to biodiversity conservation, California rangelands generate multiple ecosystem services including livestock production, drinking and irrigation water, carbon sequestration. rangeland ecosystems have experienced substantial conversion residential land use more intensive agriculture. To understand the potential impacts services, we developed six spatially explicit (250 m) climate/land change scenarios for Central Valley of surrounding foothills consistent with three...
Species distribution models often use climate data to assess contemporary and/or future ranges for animal or plant species. Land and land cover (LULC) are important predictor variables determining species range, yet rarely used when modeling distributions. In this study, maximum entropy was construct maps 50 North American bird determine relative contributions of LULC (2001) (2075) time periods. presence were as a dependent variable, while climate, LULC, topographic variables. Results varied...
Land use and land cover change (LUCC) plays an important role in determining the spatial distribution, magnitude, temporal of terrestrial carbon sources sinks. However, impacts LUCC are not well understood quantified over large areas. The goal this study was to quantify patterns dynamics various ecosystems southeastern United States from 1992 2050 using a process-based modeling system then investigate LUCC. Spatial information reconstructed projected FOREcasting SCEnarios future (FORE-SCE)...
he Energy Independence and Security Act of 2007 (EISA), Section 712, mandates the U.S. Department Interior to develop a methodology conduct an assessment Nation’s ecosystems, focusing on carbon stocks, sequestration, emissions three greenhouse gases (GHGs): dioxide, methane, nitrous oxide. The major requirements include (1) all ecosystems (terrestrial systems, such as forests, croplands, wetlands, grasslands/shrublands; aquatic rivers, lakes, estuaries); (2) estimate annual potential...