MODELLING NET PHOTOSYNTHETIC RATE OF TEMPERATE DRY GRASSLAND SPECIES AND WINTER WHEAT AT ELEVATED AIR CO2 CONCENTRATION
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چکیده
منابع مشابه
Flowering phenology in a species-rich temperate grassland is sensitive to warming but not elevated CO2.
* Flowering is a critical stage in plant life cycles, and changes might alter processes at the species, community and ecosystem levels. Therefore, likely flowering-time responses to global change drivers are needed for predictions of global change impacts on natural and managed ecosystems. * Here, the impact of elevated atmospheric CO2 concentration ([CO2]) (550 micromol mol(-1)) and warming (+...
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• Understanding and predicting the impacts of elevated atmospheric CO2, elevated nitrogen deposition, and decreases in plant diversity require better understanding of the way in which plant species influence soil CO2 flux. • In experimental grassland plots where atmospheric CO2, nitrogen supply, and species composition and diversity were manipulated, species effects on soil CO2 flux during 19 s...
متن کاملImpaired Stomatal Control Is Associated with Reduced Photosynthetic Physiology in Crop Species Grown at Elevated [CO2]
Physiological control of stomatal conductance (Gs) permits plants to balance CO2-uptake for photosynthesis (PN) against water-loss, so optimizing water use efficiency (WUE). An increase in the atmospheric concentration of carbon dioxide ([CO2]) will result in a stimulation of PN and reduction of Gs in many plants, enhancing carbon gain while reducing water-loss. It has also been hypothesized th...
متن کاملElevated CO2 maintains grassland net carbon uptake under a future heat and drought extreme.
Extreme climatic events (ECEs) such as droughts and heat waves are predicted to increase in intensity and frequency and impact the terrestrial carbon balance. However, we lack direct experimental evidence of how the net carbon uptake of ecosystems is affected by ECEs under future elevated atmospheric CO2 concentrations (eCO2). Taking advantage of an advanced controlled environment facility for ...
متن کاملGrassland trace gas exchange under elevated CO2
Soil-atmosphere exchange of CH4, CO2, NOx, and N2O in the Colorado Shortgrass Steppe following five years of elevated CO2 and N fertilization A. R. Mosier, E. Pendall, and J. A. Morgan USDA/ARS, Fort Collins, CO, USA Department of Botany, University of Wyoming, Laramie, WY, USA Received: 28 January 2003 – Accepted: 18 April 2003 – Published: 20 May 2003 Correspondence to: A. R. Mosier (amosier@...
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ژورنال
عنوان ژورنال: Applied Ecology and Environmental Research
سال: 2006
ISSN: 1589-1623,1785-0037
DOI: 10.15666/aeer/0402_047053