Partial Emission Material on a landscape material?


I was doing a quick test of having partial emission on my material and then wanted to add it to my landscape materials

If I hook it up to the “Emission” section, it would make all the materials partially emissive.

Is there a way to keep this effect (like on the image below) to the materials that I choose

I would like to have this same effect on the “Layer OrangeGrass” part in the first image

Thank you in advance