If we grow 1 tree every 5 meters apart, 1 sq. km will contain 200x200 = 40,000 trees.
Pakistan's total area is 796,095 sq. kms. Its means planting a tree every 5 meters apart will result in 31,843,800,000 (around 32 billion trees).
By this measure, it is a very ambitious plan. meaning government is planning to convert one third of Pakistani land into a relatively thick forest having a tree every 5 meters?
Is it really achievable? If they achieve it (which I believe they can't), Pakistan's forest cover will increase fron 3 percent to 35 % in five years.. unbelievable..