The export of kauri logs as Maori carvings is very closely monitored and is not being used as a way around the law, Primary Industries Minister Nathan Guy says.
Northland conservationists have made complaints that large logs are being dug out of wetlands and then being sold overseas.
The ecologically-sensitive wetlands are badly damaged in the process, the Far North Protection Society say.
Swamp kauri can be exported without Ministry of Forestry (MAF) approval if it is a finished or manufactured product, or a personal effect.
Whole or sawn salvaged swamp kauri stumps or roots can be exported with a MAF milling statement and export approval.