He told department employees to be open in suggesting how the Forest Service can best serve the country. Moore's announced retirement date is March 3.
The National Parks Conservation Association has responded to Forest Service layoffs and resignations with a tone of alarm.
Kristen Brengel, the association Senior Vice President of Government Affairs, said the Forest Service is facing a "crisis".
"In a matter of weeks, 9% of Park Service staff have been lost to mass firings and resignations," she said. "And this is on top of hundreds of vacant positions that can't be filled due to the ongoing hiring freeze. These indiscriminate cuts are neither strategic nor efficient; they are devastating."
Brengel is calling on the Trump administration to pull back its spending cuts.