On the other hand, there is a view of considering that the speed of dry land expansion is higher than that of planting trees and it is not easy to make the effects of the measures taken against kosa visible.
一方で、乾燥化の進行よりも植林などの対策のほうがスピードが遅く、黄砂対策は実効性を現しにくいという見方もある。