There is nothing in the act that explicitly says that, Mr Walker said.
"Just think how silly that is. It would mean you can't get a building or resource consent for a supermarket before you build it."
Fellow foresters Sid Soulsby and Tom Clarkson have been told their Shellwood Forest in Kauarapaoa Rd, once admitted to the ETS, is 83 per cent ineligible now. The reason given is that a 1993 photo shows shading indicating vegetation other than grass was present before it was planted.
"Nobody disagrees that if land was in forest before 1990 it can't be included in the Emissions Trading Scheme, but MPI boffins have gone much further than that," Mr Walker said.
MPI staff have been looking as hard as they can to find anything that will let them disallow the land, he said.
"That is in my mind ridiculous and unfair. Doesn't Mr Hendrickson know that we have to meet the 2030 Paris targets [to store carbon and offset emissions]?"
Mr Walker sees it as his duty as a community leader to challenge MPI's "obstructionist behaviour" and get change.
"Climate change mitigation is too important for humanity to just sit back and ignore this," he said.