"Landscape Systems Management" would be more precise. However, if you look at the System Settings window you can see that any three non-tiny words would wrap to three lines (compare "Wacom Graphics Tablet"), the only item on that line to do so. Either "Landscape Management" or "Landscape Administration" would be fine -- I suggested "Landscape Administration" because it's slightly more specific.
"Landscape Systems Management" would be more precise. However, if you look at the System Settings window you can see that any three non-tiny words would wrap to three lines (compare "Wacom Graphics Tablet"), the only item on that line to do so. Either "Landscape Management" or "Landscape Administration" would be fine -- I suggested "Landscape Administration" because it's slightly more specific.