Grassland productivity, known as Net Primary Productivity (NPP), is important for the carbon cycle in ecosystems, and this study looked at changes in NPP on the Loess Plateau from 2000 to 2015.
The results showed that, overall, the grassland productivity was increasing, but the rate of increase slowed down over the years.
They found that more rain helped grasslands grow better, while higher temperatures had a negative effect on their productivity.