Those adjustments are changed based on the default settings for the camera that were determined by Adobe. If you don't want to use those settings then you have a couple of choices. You can zero out all of the adjustments and save new defaults for the camera. Or, in the Lightroom presets under the General section you will see one named zeroed. You can apply that preset when you import your images.
When you do an import, have you made sure that on the right panel, under 'Apply During Import', Develop Settings are set to none?