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1. GLOBAL FOREST ECOSYSTEM STRUCTURE AND FUNCTION DATA FOR CARBON BALANCE RESEARCH [LUYSSAERT_CARBON_FLUX]
A comprehensive global database has been assembled to quantify CO2 fluxes and pathways across different levels of integration (from photosynthesis up to net ecosystem production) in forest ecosystems. ...


2. Long-term Tillage and Crop Rotation Study, Nebraska [USDA.ARS.SWCRU.CropSysTrial2]
(adapted from Project Summary) PROBLEM: Soil and water conservation concerns have been and continue to be the major driving forces in agricultural production in the western Corn Belt. In addition, ...


3. Developing Rapid Instrumental Methods for Measurement of Soil Quality Parameters [USDA.ARS.NRI.ECL.RapidMeasure]
(adapted from project description) Problem: The need to assess impact of conventional and sustainable agricultural practices on soil quality requires development of routine procedures that can rapidly ...


4. Influence of Tillage Management on Soil Quality and Fate of Agricultural Nitrogen [USDA.ARS.NRI.ECL.TillMngt]
(adapted from project description) Problem: The use of no-tillage cropping systems has increased as their advantages in sustainable crop production have been documented. This includes better maintenance ...


5. Mineralization of Organic Nitrogen in Soil Under Plow and No-tillage Management [USDA.ARS.NRI.ECL.MinOrgN]
(adapted from Project summary) Problem: Cultivation of soils has caused large decreases in content of soil organic matter and this has raised concerns about sustainble use of agricultural lands ...


6. Impact of Climate on Plant-soil Interactions and Carbon Budgets of Ponderosa Pine [USDA0592]
The purpose of the data in "Impact of Climate on Plant-soil Interactions and Carbon Budgets of Ponderosa Pine" is to determine if climate-driven shifts in biomass allocation enable ponderosa pine ...


7. Tillage, N Fertilization, and Crop Rotation Effects On Soil Organic C and N [USDA.ARS.SPNRU.tillNCropOM]
(adapted from abstract presented at ARS carbon storage meeting, Baltimore Jan 1999) Problem: Conventional tillage, crop-fallow dryland fanning systems in the central and northern Great Plains utilized ...


8. Transport of Sediment-borne Carbon with Different Tillage Practices, USDA-ARS-NAEW [USDA.ARS.NAEWRU.SedimentC]
(adapted from project decription) Problems: Tillage practices impact the movement of sediment within and from watersheds. How do conservation tillage practices influence the movement of carbon attached ...


9. Carbon Exchange on the Short-grass Steppe and the Northern Mixed Prairie. [USDA.ARS.RRRU.Carbonxchng]
(adapted from project abstracts) Problems: While the importance of rangelands for domestic animal grazing and wildlife have been appreciated for some time, their role in the global C cycle is only ...


10. Carbon and Nitrogen Balance of a Northern Mixed-grass Prairie as Influenced by Grazing [USDA.ARS.RRRU.MixedGrassCarbon]
(Adapted from Abstract presented at ARS Carbon Storage Workshop, Baltimore, MD, Jan 1999) Problem: Rangeland health and sustainable productivity of our rangelands are becoming a key issues in developing ...


11. Alternative Tillage and Cropping Strategies for Subtropical Conditions [USDA.ARS.SARC.IFNRRU.AltTill]
(adapted from project summary) Problems: Subtropical growing conditions and the use of intensive plow tillage in South Texas promotes a net loss of soil carbon and plant nutrients. These losses ...


12. CO2 and Temperature Effects on Two Subtropical Grassland Species: A C3 Legume and C4 Stoloniferous Grass. [USDA.ARS.CGERU.CO2tempFlorida]
(Adapted from an Abstract Presented at ARS Carbon Storage Workshop) THE PROBLEM: After maximal deforestation in the Eastern USA, and particularly the Southeastern USA, much land returned naturally ...


13. Carbon Accumulation and Sequestration by Bahiagrass Systems: Effect Across Time of Nitrogen Fertility, Water, and Aboveground Biomass Removal. [USDA.ARS.CGERU.Bahiagrass]
(Adapted from an Abstract Presented at ARS Carbon Storage Workshop) "Missing" carbon has been identified publicly as a major problem in balancing the annual global carbon budget for at least 22 years. ...


14. Carbon Dioxide Fluxes for Native and Improved Grazinglands. [USDA.ARS.NGPRL.CO2FluxGraze]
(Adapted from abstract presented at ARS Carbon Storage Workshop, Baltimore, MD Jan 1999) PROBLEM: The grasslands ofthe Northern Great Plains are dominated by the C3 wheatgrass- needlegrass and C4 ...


15. Carbon Storage Related to Land Use Management: Analysis of Sediment Collected from Watersheds with Various Land Uses. [USDA.ARS.NAEW.CStoreLandMngt]
(adapted from project summary) Problems: Carbon in soils varies quantitatively and with depth depending on theland use management. Some management practices allow for considerable sequestration and ...


16. Impact of Livestock Grazing on Carbon and Nitrogen Balance of a Short-grass Steppe [USDA.ARS.CGPRS.SGSgraze]
(adapted from project abstract) Problem: Grazing lands constitute about 55% ofthe total land surface of the United States, and have been estimated to contain 40,000 MMT of C in the top 2 m of the ...


17. Impacts of CO2 Enrichment on C Sequestration in Native Grasslands [USDA.ARS.SPNRU.CO2enrich]
(Adapted from abstract presented at ARS Carbon Storage Workshop, Baltimore MD, Jan 1999) Problems: During the past few decades the atmospheric concentration of CO2 has been increasing at historically ...


18. Soil C Sequestration Under Varving Tillage and Cropping Management Systems: Cropping Systems Trial, Mead, Nebraska [USDA.ARS.SWCRU.CropSysTrial]
(adapted from Project Summary) PROBLEM: Soil and crop management research has emphasized the divide and conquer approach to solving problems in the past thirty years. More recently, emphasis on ...


19. Vegetation Change on Rangelands in Relation to Carbon Sequestration and Increasing Atmospheric CO2 Concentrations. [USDA.ARS.GSWRL.VegChngRangCO2]
(Adapted from project description) Problem: A large carbon sink is implied on western rangelands from data and modeling recently reported in Science. Only forest ecosystems have been generally ...


20. Carbon Storage in the 'Old Rotation 'Long-Term Cotton Experiment [USDA.ARS.NSDL.LongTermCotton]
(Adapted from project abstract) PROBLEMS: 1. Conventional tillage continuous cotton production severely depletes soil carbon and degrades the soil. 2. There is a paucity of data related to long-term ...


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