How does warming prevent soil nitrogen availability from declining in response to elevated CO2?

陆地环境的可持续利用取决于维持生态系统的生产力，而生态系统的生产力又取决于土壤内的养分供应。众所周知，大气中二氧化碳含量的增加会减少养分的可用性，而变暖则会阻止这种情况的发生。该项目的目的是确定气候变暖是如何防止二氧化碳浓度升高，从而降低土壤氮素利用率，从而降低原生草地生态系统的生产力。这是很重要的，因为它可以通过增加对潜在机制的了解来预测可能由全球气候变化引起的问题，并以环境可持续的方式改善草原管理。

The sustainable use of the terrestrial environment depends upon maintaining ecosystem productivity which in turn depends upon nutrient availability within the soil. Increasing levels of CO2 in the atmosphere are known to decrease nutrient availability while warming prevents this from happening. The aims of this project are to determine how warming is able to prevent elevated CO2 concentrations from reducing soil N availability and hence productivity in a native grassland ecosystems. This is important, as it will allow likely problems caused by global climate change to be predicted by increasing the understanding of the underlying mechanisms as well as improving the management of grasslands in an environmentally sustainable way.