Rhizosphere priming regulates soil carbon cycle under high carbon dioxide

澳大利亚农民未来将在二氧化碳浓度升高的情况下种植作物。然而，目前尚不清楚二氧化碳水平的增加将如何影响农业生产和土壤健康。本项目旨在了解高浓度大气CO2对主要作物土壤碳氮循环的影响。它将研究作物和土壤类型的组合如何导致土壤有机碳损失的差异。将在长期田间试验中检查与土壤中碳和氮循环有关的土壤微生物。该项目旨在提供基本信息，这些信息对于评估气候变化对我们半干旱地区贫瘠土壤的肥力和生产力的未来影响至关重要。

Australian farmers will be producing crops under elevated CO2 in the future. However, it is unknown how the increased CO2 level will affect agricultural production and soil health. This project aims to understand the effect of high atmospheric CO2 on carbon and nitrogen cycles in major cropping soils. It will examine how combinations of crop and soil types lead to differences in loss of soil organic carbon. Soil microorganisms that link to carbon and nitrogen cycling in soils will be examined in the long-term field trials. The project intends to provide fundamental information that is essential to evaluate the future impact of climate change on the fertility and productivity of our poor, already infertile soils in semi-arid regions.