Why are there vertical lines in the power spectrum?
Let's interpret what we are seeing: the spectrum seems to be made of the pointwise multiplication of 2 known Fourier patterns:


a first one is the usual messy image Fourier transform
a second pattern that modulates the image spectrum and that has a $sinc$ shape.


Now, let's see what the theory provides us:


multiplication in the spectral domain is a convolution in the spatial domain => we are observing the convolution of an image by a blur kernel
the inverse Fourier transform of a $sinc$ is a box => the blur kernel has an horizontal box shape (we can infer that from the orientation of the zero bands).


Finally, let's summarize: the image was blurred by a linear (horizontal) kernel.
This is a typical example of motion blur, where the motion is horizontal.
This is confirmed by looking at the original image.

And as a bonus, here is a paper where special shapes of motion blurs are designed, where the blur shapes do not have zeros that will disturb the deconvolution process:
http://web.media.mit.edu/~raskar/deblur/CodedExpousreLowres.pdf