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United States Department of Agriculture (USDA) 2005

CARBON DIOXIDE FLUXES ON WESTERN RANGELANDS

CO2 Rangelands

United States Department of Agriculture (USDA) Research, Education & Economics Information System (REEIS)

Titre : CARBON DIOXIDE FLUXES ON WESTERN RANGELANDS

Identification : 6206-11220-005-03S

Pays : Etats Unis

Durée : Jan 1, 2005 à Dec 31, 2009

Domaine : Soil, Plant, Water, Nutrient Relationships ; Management of Range Resources ; Land ; Desert and semidesert shrub land and shinnery ; Soil ;

Partenaire : TEXAS A&M UNIVERSITY 750 AGRONOMY RD STE 2701 COLLEGE STATION

Objectif  : Document carbon dioxide source/sink relationships on grasslands representative of the various North American climatic regimes, the impacts of land use decisions and management practices on major carbon pools and fluxes, and the role of rangelands in the global carbon balance, as influenced by land use decisions and rangeland management practices.

Descriptif
Rate and direction of carbon dioxide fluxes will be continuously monitored above grasslands and shrublands on sites at several ARS locations in the central and western U.S., using pop-on chambers and Bowen ratio/energy balance equipment fitted with infrared gas analyses. Within locations, comparisons will be made on grassland sites with and without shrubs, on grazed and ungrazed sites, or on sites dominated by native or introduced forage species. Carbon dioxide flux measurements will be interpreted in light of concomitant analyses of soil and vegetation carbon dynamics, meteorological monitoring, and changes in the surface energy balance.

Présentation : USDA

Page publiée le 14 septembre 2015, mise à jour le 2 novembre 2017