当前位置：
X-MOL 学术
›
Eur. J. Soil Biol.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Warming reduces soil CO2 emissions but enhances soil N2O emissions: A long-term soil transplantation experiment
European Journal of Soil Biology ( IF 4.2 ) Pub Date : 2024-04-07 , DOI: 10.1016/j.ejsobi.2024.103614 Xinyu Zhu , Liang Chang , Yunchuan Hu , Zhen He , Wei Wang , Donghui Wu
European Journal of Soil Biology ( IF 4.2 ) Pub Date : 2024-04-07 , DOI: 10.1016/j.ejsobi.2024.103614 Xinyu Zhu , Liang Chang , Yunchuan Hu , Zhen He , Wei Wang , Donghui Wu
Climate warming can accelerate soil organic matter decomposition and stimulate soil CO and NO emissions. However, long-term climate warming and land-use changes in relatively high-latitude regions on soil CO and NO emissions remain largely unexplored, posing challenges to climate change research. Therefore, we conducted a long-term soil transplant experiment (8 years) across three relatively high-latitude northeastern regions in China to study the impacts of climate warming and land-use changes (from cropland to grassland) on soil CO and NO emissions. As the temperature increased by 3 °C and 5 °C, the soil CO emissions from cropland were reduced by 59.07% and 56.87%, respectively, and those from grassland were reduced by 17.11% and 10.62%, respectively. The experiment duration, soil C storage, soil microbial abundance and soil moisture may be the main factors that explain why warming did not stimulate soil CO emissions. Soil NO emissions increased by 76.57% in cropland and 263.81% in grassland as the temperature increased by 5 °C. Higher soil CO and NO emissions were observed in grassland compared to cropland. Warming promoted aboveground plant biomass and indirectly promoted soil NO emissions, particularly in grassland. The effects of long-term warming on soil CO and NO emissions exhibited contrasting patterns, with CO emissions in relatively high-latitude and cold regions showing sensitivity to climate warming. When taking strategies to enhance soil C sequestration, consideration should be given to whether these strategies will be offset by stimulating soil NO emissions, which is crucial for mitigating global warming. Overall, the impacts of long-term natural field warming and land-use changes on soil CO and NO emissions and associated controls provide new insights for mitigating climate change.
更新日期：2024-04-07
京公网安备 11010802027423号