Carbon costs of plant nutrient and water uptake

该项目旨在调查碳工厂需要在地下投资多少以换取水和养分。通过使用供需经济学原理，该项目将量化不同气候和土地管理情景下草原和作物的水和养分的碳支出。该项目将使用三重和四重同位素标记技术，并探索碳投资对植物-微生物相互作用和地下资源可用性的依赖。预期成果包括建立关于植物碳-水-营养经济学的通用框架的新知识。这将有利于全球碳循环模型和提高农作物养分和水分利用效率的努力。

This project aims to investigate how much carbon plants need to invest belowground in return for water and nutrients. By using economic principles of supply and demand the project will quantify carbon expenditure for water and nutrients in grasslands and crops under different climate and land management scenarios. This project will use triple and quadruple isotope labelling techniques and explore the dependency of carbon investment on plant-microbial interactions and availability of belowground resources. Expected outcomes include new knowledge to build a universal framework about plant carbon-water-nutrient economics. This will benefit global carbon cycling models and efforts to increase nutrient and water use efficiencies in agricultural crops.