HR: 08:00h
AN: B31C-01    [Abstracts]
TI: Considerations of Socio-Economic and Global Change Effects on Eurasian Steppes Ecosystem and Land-Atmosphere Interactions
AU: * Ojima, D S
EM: dennis@nrel.colostate.edu
AF: Natural Resource Ecology Laboratory, Colorado State University NESB, Fort Collins, CO 80523-1499 United States
AU: Chuluun, T
EM: chuluun@nrel.colostate.edu
AF: Natural Resource Ecology Laboratory, Colorado State University NESB, Fort Collins, CO 80523-1499 United States
AU: Temirbekov, S S
EM: sayat_temir@hotmail.com
AF: Laboratory of Geobotany of the Institute of Botany and Phytointroduction, Kazakhstan Ministry of Education and Science Institute of Botany and Phytointroduction, 46 D Timiriyazeva Str. Almaty 480090, KAZAKHSTAN , Almaty, 480090 Kazakhstan
AU: Mahowald, N
EM: mahowald@cgd.ucar.edu
AF: National Center for Atmospheric Research, PO Box 3000,Boulder, CO 80307, Boulder, CO 80307 United States
AU: Hicke, J
EM: jhicke@nrel.colostate.edu
AF: Natural Resource Ecology Laboratory, Colorado State University NESB, Fort Collins, CO 80523-1499 United States
AB: Dramatic changes occurred in pastoral systems of Eurasia ranging from Mongolia, China and Central Asia for the past decades. Recently, evaluation of the pastoral systems has been conducted in the region. Pastoral systems, where humans depend on livestock, exist largely in arid or semi-arid ecosystems where climate is highly variable. Interaction between ecosystems and nomadic land use systems co-shaped them in mutual adaptive ways for hundreds of years, thus making both the Mongolian rangeland ecosystem and nomadic pastoral system resilient and sustainable. Current changes in environmental conditions are affecting land-atmosphere interactions. Regional dust events, changes in hydrological cycle, and land use changes contribute to changing interactions between ecosystem and landscape processes which affect regional climate. The general trend involves greater intensification of resource exploitation at the expense of traditional patterns of extensive range utilization. This set of drivers is orthogonal to the above described climate drivers. Thus we expect climate-land use-land cover relationships to be crucially modified by the socio-economic forces.
DE: 1600 GLOBAL CHANGE (New category)
DE: 1615 Biogeochemical processes (4805)
DE: 0315 Biosphere/atmosphere interactions
SC: Biogeosciences [B]
MN: 2004 AGU Fall Meeting