1. The main objective of forestry remote sensing is forest resources investigation. At present, there is no problem in qualitative remote sensing, and there is no big breakthrough in quantitative remote sensing. You can study it.

2. At present, the remote sensing data resources with multi-sensor, multi-resolution and multi-coverage are very rich. We can study it comprehensively.

Some people say that remote sensing is an art, hehe, you should give full play to the potential of thinking in images, and I believe you will find a suitable innovative research direction.