%0 Journal Article
%T Global trends in carbon sinks and their relationships with CO2 and temperature
%J -
%D 2018
%R https://doi.org/10.1038/s41558-018-0367-7
%X Elevated CO2 concentrations increase photosynthesis and, potentially, net ecosystem production (NEP), meaning a greater CO2 uptake. Climate, nutrients and ecosystem structure, however, influence the effect of increasing CO2. Here we analysed global NEP from MACC-II and Jena CarboScope atmospheric inversions and ten dynamic global vegetation models (TRENDY), using statistical models to attribute the trends in NEP to its potential drivers: CO2, climatic variables and land-use change. We found that an increased CO2 was consistently associated with an increased NEP (1995¨C2014). Conversely, increased temperatures were negatively associated with NEP. Using the two atmospheric inversions and TRENDY, the estimated global sensitivities for CO2 were 6.0£¿¡À£¿0.1, 8.1£¿¡À£¿0.3 and 3.1£¿¡À£¿0.1£¿PgC per 100£¿ppm (~1£¿¡ãC increase), and £¿0.5£¿¡À£¿0.2, £¿0.9£¿¡À£¿0.4 and £¿1.1£¿¡À£¿0.1£¿PgC£¿¡ãC£¿1 for temperature. These results indicate a positive CO2 effect on terrestrial C sinks that is constrained by climate warming
%U https://www.nature.com/articles/s41558-018-0367-7