Impact of elevated atmospheric CO2on forest floor respiration in a temperate pine forest
نویسندگان
چکیده
منابع مشابه
Fine-root respiration in a loblolly pine and sweetgum forest growing in elevated CO
• The loss of carbon below-ground through respiration of fine roots may be modified by global change. Here we tested the hypothesis that a reduction in N concentration of tree fine-roots grown in an elevated atmospheric CO 2 concentration would reduce maintenance respiration and that more energy would be used for root growth and N uptake. We partitioned total fine-root respiration ( R T ) betwe...
متن کاملCarbonyl sulfide exchange in a temperate loblolly pine forest grown under ambient and elevated CO 2
Vegetation, soil and ecosystem level carbonyl sulfide (COS) exchange was observed at Duke Forest, a temperate loblolly pine forest, grown under ambient (Ring 1, R1) and elevated (Ring 2, R2) CO 2. During calm meteorological conditions, ambient COS mixing ratios at the top of the forest canopy followed a distinct diurnal pattern in both CO 2 growth regimes, with maximum COS mixing ratios during ...
متن کاملMicrobial consumption of atmospheric isoprene in a temperate forest soil.
Isoprene (2-methyl-1,3 butadiene) is a low-molecular-weight hydrocarbon emitted in large quantities to the atmosphere by vegetation and plays a large role in regulating atmospheric chemistry. Until now, the atmosphere has been considered the only significant sink for isoprene. However, in this study we performed both in situ and in vitro experiments with soil from a temperate forest near Ithaca...
متن کاملMicrobial Consumption of Atmospheric Isoprene in a Temperate Forest Soil
Isoprene (2-methyl-l,3 butadiene) is a low-molecular-weight hydrocarbon emitted in large quantities to the atmosphere by vegetation and plays a large role in regulating atmospheric chemistry. Until now, the atmo sphere has been considered the only significant sink for isoprene. However, in this study we performed both in situ and in vitro experiments with soil from a temperate forest near Itha...
متن کاملMultiple environmental changes drive forest floor vegetation in a temperate mountain forest
Human-induced changes of the environment and their possible impacts on temperate forest understory plant communities have been examined in many studies. However, the relative contribution of individual environmental factors to these changes in the herb layer is still unclear. In this study, we used vegetation survey data covering a time period of 21 years and collected from 143 permanent plots ...
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ژورنال
عنوان ژورنال: Global Biogeochemical Cycles
سال: 2004
ISSN: 0886-6236
DOI: 10.1029/2003gb002182