Rhizosphere priming regulates soil carbon cycle under high carbon dioxide

高二氧化碳条件下根际启动调节土壤碳循环

• 批准号: DP210100775
• 负责人: Prof Caixian Tang
• 金额: $ 28.41万
• 依托单位: La Trobe University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2021
• 资助国家: 澳大利亚
• 起止时间: 2021-12-01 至 2024-11-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP210100775
• 关键词: Rhizosphere; priming; regulates; soil; carbon

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.

未来，澳大利亚农民将在二氧化碳浓度升高的情况下种植农作物。然而，目前尚不清楚增加的二氧化碳水平将如何影响农业生产和土壤健康。本项目旨在了解高大气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。将在长期的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已经贫瘠的贫瘠土壤的肥力和生产力的未来影响至关重要。