Track topics on Twitter Track topics that are important to you
Elevated atmospheric CO concentration (eCO ) and climate change may substantially alter soil carbon (C) dynamics and thus feedback to future climate. However, only very few field experiments world-wide have combined eCO with both warming and changes in precipitation in order to study the potential combined effects of changes in these fundamental drivers of C cycling in ecosystems. We exposed a temperate heath/grassland to eCO , warming, and drought, in all combinations for 8 years. At the end of the study, soil C stocks were on average 0.927 kg C m higher across all treatment combinations with eCO compared to ambient CO treatments (equal to an increase of 0.120 ± 0.043 kg C m y ), and showed no sign of slowed accumulation over time. However, if observed pre-treatment differences in soil C are taken into account, the annual rate of increase caused by eCO may be as high as 0.177 ± 0.070 kg C m y . Further, the response to eCO was not affected by simultaneous exposure to warming and drought. The robust increase in soil C under eCO observed here, even when combined with other climate change factors, suggests that there is continued and strong potential for enhanced soil carbon sequestration in some ecosystems to mitigate increasing atmospheric CO concentrations under future climate conditions. The feedback between land C and climate remains one of the largest sources of uncertainty in future climate projections, yet experimental data under simulated future climate, and especially including combined changes, are still scarce. Globally coordinated and distributed experiments with long-term measurements of changes in soil C in response to the three major climate change-related global changes, eCO , warming, and changes in precipitation patterns, are therefore urgently needed. This article is protected by copyright. All rights reserved.
This article was published in the following journal.
Name: Global change biology
Our results reveal both soil drought and PEG can enhance malate, glutathione and ascorbate metabolism, and proline biosynthesis, whereas soil drought induced these metabolic pathways to a greater degr...
Global warming exerts profound impacts on terrestrial carbon cycles and feedback to climates. Ecosystem respiration (ER) is one of the main components of biosphere CO fluxes. However, knowledge regard...
Large amounts of carbon are stored in northern peatlands. There is concern that greater wildfire severity following projected increases in summer drought will lead to higher post-fire carbon losses. W...
Global warming has become an important research topic in different disciplines around the world, especially in the fields of environment quality and food security. As a potential problem in soil envir...
The effect of warming on soil nitrogen (N) pools and turnover in agro-ecosystems has rarely been investigated, particularly in middle-high latitudes where the temperature is predicted to increase more...
Two patient warming systems will be compared with 40 patients each in a convective warming group (BairHugger, Arizant) and in a conductive warming group (HotDog, Augustine Biomedical). ...
Intraoperative active warming is usually performed by skin warming. There are several forced-air systems on the market; forced air warming is generally described as the most effective yet ...
The aim of this study is to assess the effectiveness of EnsoETM as a supplemental warming device compared to the standard of care warming practice in patients having major surgery.
The purpose of this study is to determine if local warming of surgical wounds improves healing and helps prevent infection. The investigators want to see if warming surgical incisions impr...
Trauma is the leading cause of death in young adults, bleeding and infection are major concomitant problems. We test the hypothesis that fast, perioperative warming with an endovascular ca...
Unsaturated derivatives of the ESTRANES with methyl groups at carbon-13, with no carbon at carbon-10, and with no more than one carbon at carbon-17. They must contain one or more double bonds.
A family of gram-negative, aerobic bacteria utilizing only one-carbon organic compounds and isolated from in soil and water.
Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading.
Enzymes that catalyze the joining of two molecules by the formation of a carbon-carbon bond. These are the carboxylating enzymes and are mostly biotinyl-proteins. EC 6.4.
Enzymes that catalyze the cleavage of a carbon-carbon bond by means other than hydrolysis or oxidation. This subclass contains the DECARBOXYLASES, the ALDEHYDE-LYASES, and the OXO-ACID-LYASES. EC 4.1.