Is also known that such natural compensation mechanisms have 'elastic limits', so it's not so speculative to apply a simple regression model that fits future data, as can be done with carbon emissions, global temperature... and so on. Later I will provide those analysis.
Also an important projections also have been done by others: "By the end of the century, the duration of moderate, severe and exceptional droughts in some regions of China will double, and the drought intensity will increase by over 80%." https://link.springer.com/article/10.1007/s11430-021-9927-x