{"id":{"repo_id":"cornell","oai_identifier":"oai:ecommons.cornell.edu:1813/38977"},"canonical_url":"https://search.dev.ndltd.org/etd/cornell/oai:ecommons.cornell.edu:1813/38977","repository":{"repo_id":"cornell","name":"Cornell University","base_url":"https://ecommons.cornell.edu/server/oai/request"},"display":{"title":"Spring-Thaw Nitrous Oxide Emissions From Reed Canarygrass On Wet Marginal Soil In New York State","abstract":"In temperate climates, a significant fraction of annual emissions of nitrous oxide (N2O) from agricultural land occurs during soil thaw. The objective of this study is to determine the impact of conversion of long-term fallow grassland to perennial grass bioenergy crops on N2O emissions during spring-thaw, and to identify field-scale features that influence emissions. We measured mid-afternoon fluxes daily from March 27th to April 7th 2013 from fallow and reed canarygrass over a short topological gradient using static chambers. Soil temperature, volumetric water content, and above-ground biomass were also observed, as were hourly air temperature and precipitation. Hot-moment analysis, non-parametric statistics and modeling results show that in the reed canarygrass, the topologically low subplots exhibited significantly elevated emissions compared to the fallow. Our results suggest that conversion of fallow grassland to perennial grass cropping systems for bioenergy or other uses could increase spring-thaw N2O emissions in wetness prone areas.","abstract_html":"In temperate climates, a significant fraction of annual emissions of nitrous oxide (N2O) from agricultural land occurs during soil thaw. The objective of this study is to determine the impact of conversion of long-term fallow grassland to perennial grass bioenergy crops on N2O emissions during spring-thaw, and to identify field-scale features that influence emissions. We measured mid-afternoon fluxes daily from March 27th to April 7th 2013 from fallow and reed canarygrass over a short topological gradient using static chambers. Soil temperature, volumetric water content, and above-ground biomass were also observed, as were hourly air temperature and precipitation. Hot-moment analysis, non-parametric statistics and modeling results show that in the reed canarygrass, the topologically low subplots exhibited significantly elevated emissions compared to the fallow. Our results suggest that conversion of fallow grassland to perennial grass cropping systems for bioenergy or other uses could increase spring-thaw N2O emissions in wetness prone areas.","abstract_has_math":false,"creators":["Mason, Cedric"],"institution":"Cornell University","degree_name":"M.S., Agricultural and Biological Engineering","degree_level":"Master of Science","degree_discipline":"Agricultural and Biological Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":["Richards, Brian K"],"year":2014,"date_issued":"2014-08-18","date_published":"2014-08-18","updated_at":"2026-07-24T01:49:10Z","subjects":["Nitrous oxide","Reed Canarygrass","Bioenergy"],"languages":["en_US"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/1813/38977","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Richards, Brian K"]},{"key":"dc:creator","label":"Author","values":["Mason, Cedric"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-01-07T20:58:47Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-01-07T20:58:47Z"]},{"key":"dc:date.issued","label":"Date","values":["2014-08-18"]},{"key":"dc:type","label":"Dc Type","values":["dissertation or thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Agricultural and Biological Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Master of Science"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S., Agricultural and Biological Engineering"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Cornell University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Nitrous oxide","Reed Canarygrass","Bioenergy"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_US"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/1813/38977"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In temperate climates, a significant fraction of annual emissions of nitrous oxide (N2O) from agricultural land occurs during soil thaw. The objective of this study is to determine the impact of conversion of long-term fallow grassland to perennial grass bioenergy crops on N2O emissions during spring-thaw, and to identify field-scale features that influence emissions. We measured mid-afternoon fluxes daily from March 27th to April 7th 2013 from fallow and reed canarygrass over a short topological gradient using static chambers. Soil temperature, volumetric water content, and above-ground biomass were also observed, as were hourly air temperature and precipitation. Hot-moment analysis, non-parametric statistics and modeling results show that in the reed canarygrass, the topologically low subplots exhibited significantly elevated emissions compared to the fallow. Our results suggest that conversion of fallow grassland to perennial grass cropping systems for bioenergy or other uses could increase spring-thaw N2O emissions in wetness prone areas."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Spring-Thaw Nitrous Oxide Emissions From Reed Canarygrass On Wet Marginal Soil In New York State"]}]}],"canonical_facts":{"dc:contributor.committeemember":["Richards, Brian K"],"dc:creator":["Mason, Cedric"],"dc:date.accessioned":["2015-01-07T20:58:47Z"],"dc:date.available":["2015-01-07T20:58:47Z"],"dc:date.issued":["2014-08-18"],"dc:description.abstract":["In temperate climates, a significant fraction of annual emissions of nitrous oxide (N2O) from agricultural land occurs during soil thaw. The objective of this study is to determine the impact of conversion of long-term fallow grassland to perennial grass bioenergy crops on N2O emissions during spring-thaw, and to identify field-scale features that influence emissions. We measured mid-afternoon fluxes daily from March 27th to April 7th 2013 from fallow and reed canarygrass over a short topological gradient using static chambers. Soil temperature, volumetric water content, and above-ground biomass were also observed, as were hourly air temperature and precipitation. Hot-moment analysis, non-parametric statistics and modeling results show that in the reed canarygrass, the topologically low subplots exhibited significantly elevated emissions compared to the fallow. Our results suggest that conversion of fallow grassland to perennial grass cropping systems for bioenergy or other uses could increase spring-thaw N2O emissions in wetness prone areas."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["https://hdl.handle.net/1813/38977"],"dc:language.iso":["en_US"],"dc:subject":["Nitrous oxide","Reed Canarygrass","Bioenergy"],"dc:title":["Spring-Thaw Nitrous Oxide Emissions From Reed Canarygrass On Wet Marginal Soil In New York State"],"dc:type":["dissertation or thesis"],"thesis:degree_discipline":["Agricultural and Biological Engineering"],"thesis:degree_level":["Master of Science"],"thesis:degree_name":["M.S., Agricultural and Biological Engineering"],"thesis:institution_name":["Cornell University"]},"updated_at":"2026-07-24T01:49:10Z"}