Forest owners strongly back a Government move to introduce a national environmental standard for forestry.
Lack of a single standard means there are big differences in how district and regional councils manage plantation forests.
While forestry activities in some regions are highly regulated, in other areas they don't need resource consents.
The Forest Owners Association says that's a particular headache for larger operators.
Environmental committee chair Peter Weir says having a single national environmental standard will also provide more certainty for forest owners.
They currently have no guarantee that the rules that apply when they plant the trees will be the same when they come to harvest them.
He says keeping up with District Plan changes is both costly and complicated.