Rainwater cannot not be effectively stored as a result of the worsening ecological system, thus it is urgent to build a forest that will help store rainwater.
Water diversion is only a short-term measure to curb salt tides, as it will be forced to stop if there is not sufficient water in the river's upper reaches.
Building a forest with financial support from Guangdong will improve the ecological environment along the river's upper reaches and it should become an effective way in the long term to fight against salt tides.
The limited coverage of forest in the upper reaches of the river results from financial shortages, thus Guangdong should give financial support, as it will also benefit.
