Grantee Research Project Results
1998 Progress Report: A Regional Assessment of Land Use Effects on Ecosystem Structure and Function in the Central Grasslands
EPA Grant Number: R824993Title: A Regional Assessment of Land Use Effects on Ecosystem Structure and Function in the Central Grasslands
Investigators: Burke, Ingrid C. , Mosier, Arvin , Pielke, Roger , Parton, William J. , Lauenroth, William K.
Institution: Colorado State University
EPA Project Officer: Chung, Serena
Project Period: October 1, 1996 through September 30, 1999
Project Period Covered by this Report: October 1, 1997 through September 30, 1998
Project Amount: $1,590,428
RFA: Global Climate (1996) RFA Text | Recipients Lists
Research Category: Ecological Indicators/Assessment/Restoration , Climate Change
Objective:
Our objective is to conduct an integrated assessment of landuse for the central grasslands of the U.S., utilizing the suite of databases and simulation models that we have developed over the past decade. Our research will provide estimates of the impact of landuse on ecosystem attributes (both structural and functional) at the regional scale and of the sensitivity of these ecosystem attributes to changes in climate.Progress Summary:
The second year of the Central Grassland Region EPA Integrated Assessment has been very productive. We have 1) successfully continued field data collection on above- and below-ground net primary productivity and soil nutrient balance for row-crop and rangeland agricultural systems; 2) conducted regional analyses of aboveground net primary productivity using geographic data; 3) successfully installed two Bowen Ratio systems for wheat-fallow and irrigated corn ecosystems to assess net ecosystem production; 4) assessed regional impacts of landuse in eastern Colorado on aboveground productivity using remote sensing; 5) successfully summarized data on the effect of agricultural practices in the Great Plains on trace gas flux; 6) successfully developed a daily trace gas simulation model; and 6) successfully linked an ecosystem simulation model to a regional mesoscale model to evaluate the effects of landuse management on the Great Plains climatic system.Future Activities:
During the coming year, we plan to collect additional data on carbon budgets for agricultural systems of the plains by collecting ecosystem scale data on productivity, as well as landscape scale data on net ecosystem productivity, to simulate the impacts of landuse management on carbon and nitrogen budgets and trace gas fluxes from the region, and to utilize remote sensing to assess the carbon status of the entire Great Plains region.Journal Articles on this Report : 10 Displayed | Download in RIS Format
| Other project views: | All 63 publications | 43 publications in selected types | All 34 journal articles |
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Epstein HE, Burke IC, Mosier AR, Hutchinson GL. Plant functional type effects on trace gas fluxes in the shortgrass steppe. Biogeochemistry 1998;42(1-2):145-168. |
R824993 (1998) |
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Frolking SE, Mosier AR, Ojima DS, Li C, Parton WJ, Potter CS, Priesack E, Stenger R, Haberbosch C, Dorsch P, Flessa H, Smith KA. Comparison of N2O emissions from soils at three temperate agricultural sites: simulations of year-round measurements by four models. Nutrient Cycling in Agroecosystems 1998;52(2-3):77-105. |
R824993 (1998) R824993 (Final) |
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Lauenroth WK, Burke IC, Paruelo JM. Patterns of production and precipitation-use efficiency of winter wheat and native grasslands in the central Great Plains of the United States. Ecosystems 2000;3(4):344-351. |
R824993 (1998) R824993 (1999) R824993 (Final) |
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Mosier AR, Parton WJ, Valentine DW, Ojima DS, Schimel DS, Heinemeyer O. CH4 and N2O fluxes in the Colorado shortgrass steppe: 2. long-term impact of land use change. Global Biogeochemical Cycles 1997;11(1):29-42. |
R824993 (1998) R824993 (Final) |
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Mosier AR, Parton WJ, Phongpan S. Long-term large N and immediate small N addition effects on trace gas fluxes in the Colorado shortgrass steppe. Biology and Fertility of Soils 1998;28(1):44-50. |
R824993 (1998) R824993 (Final) |
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Parton WJ, Hartman M, Ojima D, Schimel D. DAYCENT and its land surface submodel: description and testing. Global and Planetary Change 1998;19(1-4):35-48. |
R824993 (1998) R824993 (Final) |
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Paruelo JM, Jobbagy EG, Sala OE, Lauenroth WK, Burke IC. Functional and structural convergence of temperate grassland and shrubland ecosystems. Ecological Applications 1998;8(1):194-206. |
R824993 (1998) R824993 (Final) |
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Paruelo JM, Lauenroth WK. Interannual variability of NDVI and its relationship to climate for North American shrublands and grasslands. Journal of Biogeography 1998;25(4):721-733. |
R824993 (1998) R824993 (Final) |
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Pielke Sr. RA, Walko RL, Steyaert LT, Vidale PL, Liston GE, Lyons WA, Chase TN. The influence of anthropogenic landscape changes on weather in South Florida. Monthly Weather Review 1999;127(7):1663-1673. |
R824993 (1998) |
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Robles MD, Burke IC. Soil organic matter recovery on conservation reserve program fields in southeastern Wyoming. Soil Science Society of America Journal 1998;62(3):725-730. |
R824993 (1998) |
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Supplemental Keywords:
cropland management, human landuse management impacts on carbon balance., RFA, Ecosystem Protection/Environmental Exposure & Risk, Air, Scientific Discipline, Ecological Indicators, Ecological Risk Assessment, Ecosystem Protection, Ecosystem/Assessment/Indicators, Ecological Effects - Environmental Exposure & Risk, Atmospheric Sciences, climate change, ecological effects, integrated assessment, Central Grasslands, assessment methods, ecosystem assessment, carbon storage, Global Climate Change, assessment models, ecological assessment, land use effects, soil, risk assessment, environmental monitoring, climate variability, scaling, terrestrial, land use, regional scaleProgress and Final Reports:
Original AbstractThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.