BSC-related CO2 fluxes in a semiarid grass-shrub steppe
نویسنده
چکیده
1 Department Environmental Science and Energy Research, Weizmann Institute of Sciences, Rehovot 76100, Israel 2 Max Planck Institute for Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany 3 The Remote Sensing Laboratory, Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Sde Boker Campus, 84990, Israel 4 The Desertification and Restoration Ecology Research Center, Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Sde Boker Campus, 84990, Israel
منابع مشابه
Shrub Effects on Carbon Dioxide and Water Vapor Fluxes Over Grasslands
Temperate grasslands are a species-rich ecosystem that may be important in mitigating the increase in atmospheric CO2. The effect of shrub invasion on CO2 fluxes in Northern Great Plains grasslands is not known. The objectives of this research were to determine CO2 and water vapor fluxes over a grazed mixed-grass prairie (prairie site) and a mixed-grass prairie that has extensive invasion of sh...
متن کاملSpatial Variability of CO2, CH4, and N2O Fluxes during Midsummer in the Steppe of Northern China
Spatial variability is a major source of uncertainty in estimating the fluxes of greenhouse gases between steppe and atmosphere. The fluxes of CO2, CH4, and N2O were carried out between 08:00 and 10:00 h. of the following day during the midsummer period from a transect (area: 5.25×10 ha) in the semiarid steppe of northern China, using the dark static chamber technique and gas chromatography. Tw...
متن کاملLoss of foundation species increases population growth of exotic forbs in sagebrush steppe.
The invasion and spread of exotic plants following land disturbance threatens semiarid ecosystems. In sagebrush steppe, soil water is scarce and is partitioned between deep-rooted perennial shrubs and shallower-rooted native forbs and grasses. Disturbances commonly remove shrubs, leaving grass-dominated communities, and may allow for the exploitation of water resources by the many species of in...
متن کاملMoisture pulses, trace gas emissions and soil C and N in cheatgrass and native grass-dominated sagebrush-steppe in Wyoming, USA
Effects of large-scale weed invasion on the nature and magnitude of moisture-pulse-driven soil processes in semiarid ecosystems are not clearly understood. The objective of this study was to monitor carbon dioxide (CO2) and nitrous oxide (N2O) emissions and changes in soil carbon (C) and nitrogen (N) following the application of a water pulse in Wyoming big sagebrush (Artemisia tridentata ssp. ...
متن کاملEvaluating the Use of Landsat 30m Enhanced Thematic Mapper to Monitor Vegetation Cover in Shrub-Steppe Environments
Many land-management agencies are caught between decreased budgets and increasing public interest. Furthermore, semi-arid landscapes are sensitive to management prescriptions and use, and require a significant amount of monitoring in order to assess vegetation productivity and health. The purpose of this study was to evaluate the use of Landsat Enhanced Thematic Mapper (ETM) Imagery to monitor ...
متن کامل